阅读说明：本技术 定位标记热敏纸及其定位方法与其制作方法 (Positioning mark thermal sensitive paper and its positioning method and making method ) 是由 罗耀东 于 2020-05-26 设计创作，主要内容包括：本发明提供了定位标记热敏纸及其定位方法与其制作方法,该定位标记热敏纸通过将基底层、热敏显色层、第一间隔层、定位标记信息层、第二间隔层和封装层由下至上依次层叠设置形成,而该定位方法则利用该定位标记信息层在外界激发光的作用下生成相应的荧光,以将该荧光作为热敏纸的位置指示信号,再根据该激发光和该荧光之间的照射方向角度偏差,计算定位标记热敏纸相对于预定参考平面的相对位置偏差,从而基于该相对位置偏差对应的目标平移量和/或目标旋转量,对定位标记热敏纸进行平移操作和/或旋转操作；可见,该定位标记热敏纸及其定位方法能够实现对热敏纸的快速和准确定位,以及提高热敏纸的热敏记录精度。(The invention provides a positioning mark thermal sensitive paper and a positioning method and a manufacturing method thereof, the positioning mark thermal sensitive paper is formed by sequentially laminating a substrate layer, a thermal sensitive color development layer, a first spacing layer, a positioning mark information layer, a second spacing layer and a packaging layer from bottom to top, and the positioning method utilizes the positioning mark information layer to generate corresponding fluorescence under the action of external excitation light so as to take the fluorescence as a position indication signal of the thermal sensitive paper, and then calculates the relative position deviation of the positioning mark thermal sensitive paper relative to a preset reference plane according to the irradiation direction angle deviation between the excitation light and the fluorescence, thereby carrying out translation operation and/or rotation operation on the positioning mark thermal sensitive paper based on the target translation amount and/or target rotation amount corresponding to the relative position deviation; therefore, the positioning mark thermal sensitive paper and the positioning method thereof can realize the rapid and accurate positioning of the thermal sensitive paper and improve the thermal sensitive recording precision of the thermal sensitive paper.)

1. A positioning mark thermal paper is characterized in that:

the positioning mark thermal paper comprises a substrate layer, a thermal-sensitive color development layer, a first spacing layer, a positioning mark information layer, a second spacing layer and a packaging layer which are sequentially stacked from bottom to top; wherein the content of the first and second substances,

the base layer is a composite structure base layer formed by laminating a plurality of fiber paper films;

the heat-sensitive color development layer is formed by coating a heat-sensitive color development coating on the substrate layer;

the first spacing layer is a dense spacing layer formed from a polyester material;

the positioning mark information layer is formed by coating fluorescent mark materials on at least part of the surface area of the first spacing layer;

the second spacer layer is a dense spacer layer formed of a polyester material;

the packaging layer is formed by packaging colloid coated on the second spacing layer.

2. The positioning mark thermal paper as set forth in claim 1, wherein:

in the base material layer, the composite structure base layer is formed by mutually overlapping a plurality of fiber paper film laminating units; wherein the content of the first and second substances,

each fiber paper film laminating unit comprises a first fiber paper film with a first thickness and a second fiber paper film with a second thickness;

the second fiber paper film is arranged above the first fiber paper film, and the first thickness is larger than or equal to the second thickness;

alternatively, the first and second electrodes may be,

in the heat-sensitive color developing layer, the heat-sensitive color developing coating is prepared by mixing an organic solvent, heat-sensitive color developing particles, a dispersant, a developer, a stabilizer and an antioxidant according to a weight ratio of 35-65: 15-25: 1-3: 1-3: 0.5-: 0.5-1 is formed by mixing under the temperature condition of 20-30 ℃.

3. The positioning mark thermal paper as set forth in claim 1, wherein:

after the heat-sensitive color developing coating is coated on the substrate layer, the heat-sensitive color developing coating is carried out for 30-45 s and with the energy density of 500-800cal/cm²Thereby curing the heat-sensitive color developing coating into the heat-sensitive color developing layer.

4. The positioning mark thermal paper as set forth in claim 1, wherein:

in the first spacing layer, the polyester material is an oil repellent material; wherein the content of the first and second substances,

the oil-repellent material is formed by dispersing and mixing oil-repellent inorganic particles in polyester resin;

after the polyester material is coated on the thermosensitive color development layer, sequentially carrying out microwave curing treatment and pressing treatment on the polyester material;

the microwave curing treatment has the time length of 15s-35s and the energy density of 300-1000cal/cm²Of (1);

the pressure of the pressing treatment is 150Pa-450 Pa.

5. The positioning mark thermal paper as set forth in claim 1, wherein:

in the positioning mark information layer, the fluorescent mark material is ultraviolet fluorescent ink;

the fluorescent marking material is coated on the peripheral edge area of the first spacing layer or at least one corner area of the first spacing layer;

the fluorescent marker material is coated on the first spacing layer in an area not more than 35% of the total area of the first spacing layer.

6. The positioning mark thermal paper as set forth in claim 1, wherein:

in the second spacer layer, the polyester material is a water-based polyester gel material; wherein the content of the first and second substances,

the weight density of the water-based polyester gel material in the second isolating layer is 1g/m³-3.5g/m³；

After the water-based polyester gel is coated on the positioning mark information layer, drying treatment with the time length of 60-120 s and pressing treatment with the pressure intensity of 150-450 Pa are sequentially carried out on the water-based polyester gel;

alternatively, the first and second electrodes may be,

in the packaging layer, the packaging colloid is grease-resistant polyester colloid; wherein the content of the first and second substances,

and after the grease-resistant polyester colloid is coated on the second spacing layer, drying and hardening treatment is carried out on the grease-resistant polyester colloid for 25-50 s.

7. The positioning mark thermal paper as set forth in claim 1, wherein:

coating a fluorescent marking material on at least part of the surface area of the first spacing layer to form the positioning mark information layer, specifically, acquiring the translation amount of the positioning mark thermal paper and a preset coordinate system through an excitation light source to determine whether to perform translation operation on the positioning mark thermal paper, wherein the specific process comprises the following steps of,

step S1, applying fluorescent marking material to each diagonal area and the center area of the positioning mark thermal paper with the same shape and area size of the applied area, and acquiring coordinate information P (x) of each area applied with fluorescent marking material by the following formula (1)_a,y_b)

In the above formula (1), N is the number of thermal paper,m is the radius of fluorescent marking material coated on each area, a is the length of the thermal paper, and x_aThe length a of the thermal paper is the corresponding horizontal coordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is towards the right, b is the width of the thermal paper, y_bX is the corresponding ordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is upward when the width of the thermal paper is b₀、y₀The abscissa and the ordinate of the origin are taken;

step S2, scanning and irradiating the positioning mark thermal paper by an exciting light source, and acquiring the relative position deviation information R (l) of the positioning mark thermal paper in a preset coordinate system according to the fluorescence exciting state of the positioning mark thermal paper and the following formula (2)_c,w_d)

In the above formula (2), π is the circumferential ratio, arctan is the arctan function, l₀、w₀The initial coordinate corresponding to each area is coated with the fluorescent marking material, c is the transverse distance value of the excitation light source from the initial coordinate of each area coated with the fluorescent marking material, l_cIs a horizontal coordinate value of the corresponding area direction to the left when the horizontal distance value of the excitation light source from the fluorescence labeling material coated on each area is c, d is a vertical distance value of the excitation light source from the initial coordinate of the fluorescence labeling material coated on each area, w_dIs a longitudinal coordinate value of the corresponding area direction towards the left when the longitudinal distance value of the excitation light source from the fluorescent marking material coated on each area is d;

step S3, obtaining relative positional deviation information R (l) of the positioning mark thermal paper in a predetermined coordinate system by the following formula (3)_c,w_d) Comparing the translation amount C (ξ, gamma) with the initial preset coordinate information of the thermal paper in a preset database to obtain the translation amount C (ξ, gamma), and determining whether to execute the translation operation on the positioning mark thermal paper according to the translation amount C (ξ, gamma)

In the above formula (3), g_iFor a predetermined abscissa, h, of the thermal paper_jξ is a preset ordinate of the thermal paper, gamma is an abscissa translation value of the thermal paper, C (ξ, gamma) is the translation amount, and when the value of C (ξ, gamma) is 0, the positioning mark thermal paper is executed to carry out translation operation.

8. The positioning method of the positioning mark thermal paper according to any one of claims 1 to 7, characterized in that the positioning method comprises the steps of:

step S1, scanning and irradiating the positioning mark thermal paper by adopting exciting light, and acquiring a fluorescence excitation state corresponding to the positioning mark information layer under the scanning and irradiation of the exciting light;

step S2, determining the relative position deviation of the positioning mark thermal paper relative to a preset reference plane according to the fluorescence excitation state;

step S3, determining the target translation amount and/or the target rotation amount of the positioning mark thermal paper according to the relative position deviation;

and step S4, according to the target translation amount and/or the target rotation amount, performing translation operation and/or rotation operation on the positioning mark thermal paper.

9. The positioning method according to claim 8, characterized in that:

in step S1, the scanning irradiation of the positioning mark thermal paper with the excitation light to obtain the fluorescence excitation state of the positioning mark information layer under the scanning irradiation of the excitation light specifically includes,

step S101, performing reciprocating scanning irradiation on the positioning mark thermal sensitive paper in a preset period by adopting ultraviolet exciting light;

step S102, acquiring a visible waveband fluorescence excitation emission direction corresponding to the positioning mark information layer under the reciprocating scanning irradiation of the excitation light;

in the step S2, the determining the relative positional deviation of the positioning mark thermal paper with respect to the predetermined reference plane based on the fluorescence excitation state specifically includes,

step S201, calculating the angle deviation between the visible waveband fluorescence excitation emission direction and the irradiation direction of the ultraviolet excitation light;

step S202, calculating the relative position deviation of the positioning mark thermal paper relative to a preset reference plane according to the angle deviation, wherein the preset reference plane is a plane perpendicular to the irradiation direction of the ultraviolet excitation light.

10. A method for manufacturing the positioning mark thermal paper according to claim 1, wherein the method for manufacturing the positioning mark thermal paper comprises the following steps:

step S1, forming a base layer through a composite structure base layer formed by laminating a plurality of fiber paper films;

step S2, coating the heat-sensitive color developing coating on the substrate layer so as to form a heat-sensitive color developing layer;

step S3, a compact spacing layer of polyester material is arranged on the heat-sensitive color development layer, so that a first spacing layer is formed;

step S4, coating a fluorescent marking material on at least a portion of the surface area of the first spacer layer to form a positioning mark information layer, which is to acquire the translation amount of a positioning mark thermal paper and a preset coordinate system by an excitation light source to determine whether to perform a translation operation on the positioning mark thermal paper, specifically,

step S401, coating fluorescent marking material on each diagonal area and central area of the positioning mark thermal paper, wherein the shape and the size of the coated area are the same, and acquiring coordinate information P (x) of each area coated by the fluorescent marking material through the following formula (1)_a,y_b)

In the above formula (1), N is the number of thermal paper, m is the radius of the fluorescent marking material coated on each area, a is the length of the thermal paper, and x_aThe length a of the thermal paper is the corresponding horizontal coordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is towards the right, b is the width of the thermal paper, y_bX is the corresponding ordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is upward when the width of the thermal paper is b₀、y₀The abscissa and the ordinate of the origin are taken;

step S402, scanning and irradiating the positioning mark thermal paper by using an exciting light source, and acquiring relative position deviation information R (l) of the positioning mark thermal paper in a preset coordinate system according to the fluorescence excitation state of the positioning mark thermal paper and the following formula (2)_c,w_d)

In the above formula (2), π is the circumferential ratio, arctan is the arctan function, l₀、w₀The initial coordinate corresponding to each area is coated with the fluorescent marking material, c is the transverse distance value of the excitation light source from the initial coordinate of each area coated with the fluorescent marking material, l_cIs a horizontal coordinate value of the corresponding area direction to the left when the horizontal distance value of the excitation light source from the fluorescence labeling material coated on each area is c, d is a vertical distance value of the excitation light source from the initial coordinate of the fluorescence labeling material coated on each area, w_dIs a longitudinal coordinate value of the corresponding area direction towards the left when the longitudinal distance value of the excitation light source from the fluorescent marking material coated on each area is d;

step S403, using the following formula (3), the relative position deviation information R (l) of the positioning mark thermal paper in the preset coordinate system_c,w_d) Comparing the translation amount C (ξ, gamma) with the initial preset coordinate information of the thermal paper in a preset database to obtain the translation amount C (ξ, gamma), and determining the translation amount C (ξ, gamma)Deciding whether to execute a translation operation of the positioning mark thermal paper

In the above formula (3), g_iFor a predetermined abscissa, h, of the thermal paper_jξ is a preset ordinate of the thermal paper, gamma is an abscissa translation value of the thermal paper, C (ξ, gamma) is the translation amount, and when the value of C (ξ, gamma) is 0, the positioning mark thermal paper is executed to carry out translation operation;

step S5, a compact spacing layer of polyester material is arranged on the positioning mark information layer, so as to form a second spacing layer;

step S6, coating an encapsulant on the second spacer layer to form an encapsulation layer.

Technical Field

The invention relates to the technical field of thermal paper and a positioning process thereof, in particular to positioning mark thermal paper, a positioning method and a manufacturing method thereof.

Background

The thermal paper is also called thermal surface recording paper or thermal copy paper, which is essentially a processed paper, and a layer of thermal paint is coated on a base paper, and then the thermal paint is subjected to color development reaction under the action of thermal printing, so that corresponding characters or patterns are formed. The prior art thermal paper is simply coated with a layer of thermal paint on the base paper, and the structure and the function of the prior art thermal paper are single. The thermal paper needs to be positioned during use, and for this purpose, corresponding positioning marks are usually printed on the thermal paper and are visually measured in the subsequent thermal printing process to realize the corresponding positioning. However, such positioning means for visual measurement has low accuracy, and it cannot achieve quick and accurate positioning of the thermal paper, thereby seriously affecting the thermal recording accuracy of the thermal paper.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides positioning mark thermal paper and a positioning method thereof, wherein the positioning mark thermal paper is formed by sequentially laminating a substrate layer, a thermal-sensitive color development layer, a first spacing layer, a positioning mark information layer, a second spacing layer and a packaging layer from bottom to top; therefore, the positioning mark thermal sensitive paper and the positioning method thereof can realize the rapid and accurate positioning of the thermal sensitive paper and improve the thermal sensitive recording precision of the thermal sensitive paper.

The invention provides a positioning mark thermal sensitive paper, which is characterized in that:

the positioning mark thermal paper comprises a substrate layer, a thermal-sensitive color development layer, a first spacing layer, a positioning mark information layer, a second spacing layer and a packaging layer which are sequentially stacked from bottom to top; wherein the content of the first and second substances,

the base layer is a composite structure base layer formed by laminating a plurality of fiber paper films;

the heat-sensitive color development layer is formed by coating a heat-sensitive color development coating on the substrate layer;

the first spacing layer is a dense spacing layer formed from a polyester material;

the positioning mark information layer is formed by coating fluorescent mark materials on at least part of the surface area of the first spacing layer;

the second spacer layer is a dense spacer layer formed of a polyester material;

the packaging layer is formed by packaging colloid coated on the second spacing layer;

further, in the base material layer, the composite structure base layer is formed by mutually overlapping a plurality of fiber paper film laminating units; wherein the content of the first and second substances,

each fiber paper film laminating unit comprises a first fiber paper film with a first thickness and a second fiber paper film with a second thickness;

the second fiber paper film is arranged above the first fiber paper film, and the first thickness is larger than or equal to the second thickness;

alternatively, the first and second electrodes may be,

in the heat-sensitive color developing layer, the heat-sensitive color developing coating is prepared by mixing an organic solvent, heat-sensitive color developing particles, a dispersant, a developer, a stabilizer and an antioxidant according to a weight ratio of 35-65: 15-25: 1-3: 1-3: 0.5-: 0.5-1 is formed by mixing under the temperature condition of 20-30 ℃;

further, after the heat-sensitive color developing coating is coated on the substrate layer, the heat-sensitive color developing coating is carried out for 30-45 s and with the energy density of 500-800cal/cm²The heat-sensitive color developing coating is cured into the heat-sensitive color developing layer;

further, in the first spacing layer, the polyester material is an oil-phobic material; wherein the content of the first and second substances,

the oil-repellent material is formed by dispersing and mixing oil-repellent inorganic particles in polyester resin;

after the polyester material is coated on the thermosensitive color development layer, sequentially carrying out microwave curing treatment and pressing treatment on the polyester material;

the microwave curing treatment has the time length of 15s-35s and the energy density of 300-1000cal/cm²Of (1);

the pressure intensity of the pressing treatment is 150Pa-450 Pa;

further, in the positioning mark information layer, the fluorescent mark material is ultraviolet fluorescent ink;

the fluorescent marking material is coated on the peripheral edge area of the first spacing layer or at least one corner area of the first spacing layer;

the coating area of the fluorescent marker material on the first spacing layer is not more than 35% of the total area of the first spacing layer;

further, in the second spacer layer, the polyester material is a water-based polyester gel material; wherein the content of the first and second substances,

the weight density of the water-based polyester gel material in the second isolating layer is 1g/m³-3.5g/m³；

After the water-based polyester gel is coated on the positioning mark information layer, drying treatment with the time length of 60-120 s and pressing treatment with the pressure intensity of 150-450 Pa are sequentially carried out on the water-based polyester gel;

alternatively, the first and second electrodes may be,

in the packaging layer, the packaging colloid is grease-resistant polyester colloid; wherein the content of the first and second substances,

after the grease-resistant polyester colloid is coated on the second interlayer, drying and hardening treatment is carried out on the grease-resistant polyester colloid for 25-50 s;

further, coating a fluorescent marking material on at least part of the surface area of the first spacing layer to form the positioning mark information layer is to obtain the translation amount of the positioning mark thermal paper and a preset coordinate system through an excitation light source so as to determine whether to perform translation operation on the positioning mark thermal paper, and the specific process is that,step S1, applying fluorescent marking material to each diagonal area and the center area of the positioning mark thermal paper with the same shape and area size of the applied area, and acquiring coordinate information P (x) of each area applied with fluorescent marking material by the following formula (1)_a,y_b)

In the above formula (1), N is the number of thermal paper, m is the radius of the fluorescent marking material coated on each area, a is the length of the thermal paper, and x_aThe length a of the thermal paper is the corresponding horizontal coordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is towards the right, b is the width of the thermal paper, y_bX is the corresponding ordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is upward when the width of the thermal paper is b₀、y₀The abscissa and the ordinate of the origin are taken;

step S2, scanning and irradiating the positioning mark thermal paper by an exciting light source, and acquiring the relative position deviation information R (l) of the positioning mark thermal paper in a preset coordinate system according to the fluorescence exciting state of the positioning mark thermal paper and the following formula (2)_c,w_d)

In the above formula (2), π is the circumferential ratio, arctan is the arctan function, l₀、w₀The initial coordinate corresponding to each area is coated with the fluorescent marking material, c is the transverse distance value of the excitation light source from the initial coordinate of each area coated with the fluorescent marking material, l_cIs a horizontal coordinate value of the corresponding area direction to the left when the horizontal distance value of the excitation light source from the fluorescence labeling material coated on each area is c, d is a vertical distance value of the excitation light source from the initial coordinate of the fluorescence labeling material coated on each area, w_dWhen the longitudinal distance value of the excitation light source from the fluorescence labeling material coated on each area is dThe longitudinal coordinate value of the corresponding region direction towards the left;

step S3, obtaining relative positional deviation information R (l) of the positioning mark thermal paper in a predetermined coordinate system by the following formula (3)_c,w_d) Comparing the translation amount C (ξ, gamma) with the initial preset coordinate information of the thermal paper in a preset database to obtain the translation amount C (ξ, gamma), and determining whether to execute the translation operation on the positioning mark thermal paper according to the translation amount C (ξ, gamma)

In the above formula (3), g_iFor a predetermined abscissa, h, of the thermal paper_jξ is a preset ordinate of the thermal paper, gamma is an abscissa translation value of the thermal paper, C (ξ, gamma) is the translation amount, and when the value of C (ξ, gamma) is 0, the positioning mark thermal paper is executed to carry out translation operation.

The invention also provides a positioning method of the positioning mark thermal sensitive paper, which is characterized by comprising the following steps:

step S1, scanning and irradiating the positioning mark thermal paper by adopting exciting light, and acquiring a fluorescence excitation state corresponding to the positioning mark information layer under the scanning and irradiation of the exciting light;

step S2, determining the relative position deviation of the positioning mark thermal paper relative to a preset reference plane according to the fluorescence excitation state;

step S3, determining the target translation amount and/or the target rotation amount of the positioning mark thermal paper according to the relative position deviation;

step S4, according to the target translation amount and/or the target rotation amount, the positioning mark thermal paper is subjected to translation operation and/or rotation operation;

further, in the step S1, the scanning irradiation of the positioning mark thermal paper with the excitation light to obtain the fluorescence excitation state of the positioning mark information layer under the scanning irradiation of the excitation light specifically includes,

step S101, performing reciprocating scanning irradiation on the positioning mark thermal sensitive paper in a preset period by adopting ultraviolet exciting light;

step S102, acquiring a visible waveband fluorescence excitation emission direction corresponding to the positioning mark information layer under the reciprocating scanning irradiation of the excitation light;

in the step S2, the determining the relative positional deviation of the positioning mark thermal paper with respect to the predetermined reference plane based on the fluorescence excitation state specifically includes,

step S201, calculating the angle deviation between the visible waveband fluorescence excitation emission direction and the irradiation direction of the ultraviolet excitation light;

step S202, calculating the relative position deviation of the positioning mark thermal paper relative to a preset reference plane according to the angle deviation, wherein the preset reference plane is a plane perpendicular to the irradiation direction of the ultraviolet excitation light.

The invention also provides a manufacturing method of the positioning mark thermal sensitive paper, which is characterized by comprising the following steps:

step S1, forming a base layer through a composite structure base layer formed by laminating a plurality of fiber paper films;

step S2, coating the heat-sensitive color developing coating on the substrate layer so as to form a heat-sensitive color developing layer;

step S3, a compact spacing layer of polyester material is arranged on the heat-sensitive color development layer, so that a first spacing layer is formed;

step S4, coating a fluorescent marking material on at least a portion of the surface area of the first spacer layer to form a positioning mark information layer, which is to acquire the translation amount of a positioning mark thermal paper and a preset coordinate system by an excitation light source to determine whether to perform a translation operation on the positioning mark thermal paper, specifically,

step S401, coating fluorescent marking material on each diagonal area and central area of the positioning mark thermal paper, and matching the shape and area size of the coated areaAlso, coordinate information P (x) of each region coated with the fluorescent marking material is obtained by the following formula (1)_a,y_b)

In the above formula (1), N is the number of thermal paper, m is the radius of the fluorescent marking material coated on each area, a is the length of the thermal paper, and x_aThe length a of the thermal paper is the corresponding horizontal coordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is towards the right, b is the width of the thermal paper, y_bX is the corresponding ordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is upward when the width of the thermal paper is b₀、y₀The abscissa and the ordinate of the origin are taken;

step S402, scanning and irradiating the positioning mark thermal paper by using an exciting light source, and acquiring relative position deviation information R (l) of the positioning mark thermal paper in a preset coordinate system according to the fluorescence excitation state of the positioning mark thermal paper and the following formula (2)_c,w_d)

In the above formula (2), π is the circumferential ratio, arctan is the arctan function, l₀、w₀The initial coordinate corresponding to each area is coated with the fluorescent marking material, c is the transverse distance value of the excitation light source from the initial coordinate of each area coated with the fluorescent marking material, l_cIs a horizontal coordinate value of the corresponding area direction to the left when the horizontal distance value of the excitation light source from the fluorescence labeling material coated on each area is c, d is a vertical distance value of the excitation light source from the initial coordinate of the fluorescence labeling material coated on each area, w_dIs a longitudinal coordinate value of the corresponding area direction towards the left when the longitudinal distance value of the excitation light source from the fluorescent marking material coated on each area is d;

in step S403, the positioning mark is heat-sensitive by the following formula (3)Relative position deviation information R (l) of paper in a predetermined coordinate system_c,w_d) Comparing the translation amount C (ξ, gamma) with the initial preset coordinate information of the thermal paper in a preset database to obtain the translation amount C (ξ, gamma), and determining whether to execute the translation operation on the positioning mark thermal paper according to the translation amount C (ξ, gamma)

In the above formula (3), g_iFor a predetermined abscissa, h, of the thermal paper_jξ is a preset ordinate of the thermal paper, gamma is an abscissa translation value of the thermal paper, C (ξ, gamma) is the translation amount, and when the value of C (ξ, gamma) is 0, the positioning mark thermal paper is executed to carry out translation operation;

step S5, a compact spacing layer of polyester material is arranged on the positioning mark information layer, so as to form a second spacing layer;

step S6, coating an encapsulant on the second spacer layer to form an encapsulation layer.

Compared with the prior art, the positioning mark thermal paper is formed by sequentially laminating a substrate layer, a thermal-sensitive color development layer, a first spacing layer, a positioning mark information layer, a second spacing layer and a packaging layer from bottom to top, and the positioning method utilizes the positioning mark information layer to generate corresponding fluorescence under the action of external excitation light so as to take the fluorescence as a position indication signal of the thermal paper, and then calculates the relative position deviation of the positioning mark thermal paper relative to a preset reference plane according to the irradiation direction angle deviation between the excitation light and the fluorescence, so that the positioning mark thermal paper is subjected to translation operation and/or rotation operation based on the target translation amount and/or target rotation amount corresponding to the relative position deviation; therefore, the positioning mark thermal sensitive paper and the positioning method thereof can realize the rapid and accurate positioning of the thermal sensitive paper and improve the thermal sensitive recording precision of the thermal sensitive paper.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a positioning mark thermal paper provided by the present invention;

fig. 2 is a schematic flow chart of a positioning method of the positioning mark thermal paper provided by the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a schematic structural diagram of a positioning mark thermal paper according to an embodiment of the present invention is shown. The positioning mark thermal paper comprises a substrate layer, a thermal-sensitive color development layer, a first spacing layer, a positioning mark information layer, a second spacing layer and a packaging layer which are sequentially stacked from bottom to top; wherein the content of the first and second substances,

the substrate layer is a composite structure substrate layer formed by laminating a plurality of fiber paper films;

the heat-sensitive color development layer is formed by coating a heat-sensitive color development coating on the substrate layer;

the first spacing layer is a dense spacing layer formed of a polyester material;

the positioning mark information layer is formed by coating a fluorescent mark material on at least part of the surface area of the first spacing layer;

the second spacer layer is a dense spacer layer formed from a polyester material;

the packaging layer is formed by packaging colloid coated on the second spacing layer.

The positioning mark thermal paper provides corresponding reference for the positioning of the thermal paper through the positioning mark information layer clamped in the positioning mark thermal paper, and the positioning mark information is arranged in the first spacing layer and the second spacing layer, so that the positioning mark information layer can be effectively isolated and protected, the positioning mark information layer is prevented from being corroded, and the normal positioning mark function of the positioning mark information layer is ensured.

Preferably, in the base material layer, the composite structure base layer is formed by mutually overlapping a plurality of fiber paper film laminating units; wherein the content of the first and second substances,

each fiber paper film laminating unit comprises a first fiber paper film with a first thickness and a second fiber paper film with a second thickness;

the second fiber paper film is arranged above the first fiber paper film, and the first thickness is larger than or equal to the second thickness.

The base material layer is mutually overlapped through the plurality of fiber paper film laminating units, so that the situation that the base material layer is warped due to the fact that single fiber base paper is adopted to form the base material layer can be avoided, and in addition, because the first fiber paper film and the second fiber paper film which are different in thickness are adopted in each fiber paper film laminating unit in an overlapped mode, the toughness and the tear resistance of the base material layer can be improved to the maximum extent on the premise that the thickness of the fiber paper film laminating unit is reduced.

Preferably, in the thermosensitive color developing layer, the thermosensitive color developing coating is prepared by mixing an organic solvent, thermosensitive color developing particles, a dispersant, a developer, a stabilizer and an antioxidant in a ratio of 35 to 65: 15-25: 1-3: 1-3: 0.5-: 0.5-1 is formed by mixing under the temperature condition of 20-30 ℃.

The thermosensitive color developing coating obtained by mixing the components according to the weight ratio and the temperature condition can improve the thermosensitive color developing response and the durability of the thermosensitive color developing layer to the maximum extent.

Preferably, after the heat-sensitive color developing coating is coated on the substrate layer, the heat-sensitive color developing coating is also carried out for 30s-45s and with the energy density of 500-800cal/cm²The heat-sensitive color developing coating is cured into the heat-sensitive color developing layer by the infrared radiation treatment.

The coated thermosensitive color developing coating is irradiated and cured according to the parameters, so that the combination stability and the film forming stability of the thermosensitive color developing layer and the first isolating layer can be improved.

Preferably, in the first distance layer, the polyester material is an oleophobic material; wherein the content of the first and second substances,

the oil-repellent material is formed by dispersing and mixing oil-repellent inorganic particles in polyester resin;

after the polyester material is coated on the thermosensitive color development layer, sequentially carrying out microwave curing treatment and pressing treatment on the polyester material;

the microwave curing treatment has the time length of 15s-35s and the energy density of 300-²Of (1);

the pressure of the pressing treatment is 150Pa-450 Pa.

The first isolation layer is formed by dispersing and mixing the oil-repellent inorganic particles in the polyester resin, so that the oil-proof permeability of the thermal paper can be improved to the maximum extent while the manufacturing cost and difficulty of the first isolation layer are reduced.

Preferably, in the positioning mark information layer, the fluorescent mark material is ultraviolet fluorescent ink;

the fluorescent marking material is coated on the peripheral edge area of the first spacing layer or at least one corner area of the first spacing layer;

the coating area of the fluorescent marking material on the first spacing layer is not more than 35% of the total area of the first spacing layer.

The ultraviolet fluorescent ink is used as the fluorescent marking material to form an improved positioning mark information layer, so that the sensitivity of the thermal sensitive paper for positioning marks can be improved, and the positioning mark information layer is prevented from influencing the normal thermal sensitive recording function of the thermal sensitive paper.

Preferably, in the second spacer layer, the polyester material is a water-based polyester gel material; wherein the content of the first and second substances,

the weight density of the water-based polyester gel material in the second isolating layer is 1g/m³-3.5g/m³；

After the water-based polyester gel is coated on the positioning mark information layer, the water-based polyester gel is sequentially subjected to drying treatment for 60-120 s and pressing treatment with the pressure of 150-450 Pa.

The second isolation layer is formed by adopting the water-based polyester gel material, so that the grease resistance of the second isolation layer can be improved, the manufacturing difficulty of the second isolation layer can be reduced, and the film forming stability of the second isolation layer can be improved by the second isolation layer formed according to the parameters.

Preferably, in the encapsulation layer, the encapsulation colloid is grease-resistant polyester colloid; wherein the content of the first and second substances,

after the grease-resistant polyester colloid is coated on the second spacing layer, the grease-resistant polyester colloid is further subjected to drying and hardening treatment for 25-50 s.

The packaging layer formed by the grease-resistant polyester colloid after the drying and hardening treatment has good grease resistance and scratch resistance.

Preferably, the step of coating the fluorescent marking material on at least part of the surface area of the first spacing layer to form the positioning mark information layer is to acquire the translation amount of the positioning mark thermal paper and a preset coordinate system by an excitation light source, so as to determine whether to perform translation operation on the positioning mark thermal paper,

step S1, applying fluorescent marking material to each diagonal area and the center area of the positioning mark thermal paper with the same shape and area size of the applied area, and acquiring coordinate information P (x) of each area applied with fluorescent marking material by the following formula (1)_a,y_b)

In the above formula (1), N is the number of thermal paper, m is the radius of the fluorescent marking material coated on each area, a is the length of the thermal paper, and x_aThe length a of the thermal paper is the corresponding horizontal coordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is towards the right, b is the width of the thermal paper, y_bX is the corresponding ordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is upward when the width of the thermal paper is b₀、y₀The abscissa and ordinate of the origin;

step S2, scanning and irradiating the positioning mark thermal paper by an exciting light source, and acquiring the relative position deviation information R (l) of the positioning mark thermal paper in a preset coordinate system according to the fluorescence exciting state of the positioning mark thermal paper and the following formula (2)_c,w_d)

In the above formula (2), π is the circumferential ratio, arctan is the arctan function, l₀、w₀The initial coordinate corresponding to each area is coated with the fluorescent marking material, c is the transverse distance value of the excitation light source from the initial coordinate of each area coated with the fluorescent marking material, l_cIs a horizontal coordinate value of the corresponding area direction to the left when the horizontal distance value of the excitation light source from the fluorescence labeling material coated on each area is c, d is a vertical distance value of the excitation light source from the initial coordinate of the fluorescence labeling material coated on each area, w_dIs a longitudinal coordinate value of the corresponding area direction towards the left when the longitudinal distance value of the excitation light source from the fluorescent marking material coated on each area is d;

step S3, obtaining relative positional deviation information R (l) of the positioning mark thermal paper in a predetermined coordinate system by the following formula (3)_c,w_d) Comparing the translation amount C (ξ, gamma) with the initial preset coordinate information of the thermal paper in a preset database to obtain the translation amount C, and according to the translation amount C(ξ, gamma) to determine whether or not to perform a translation operation of the positioning mark thermal paper

In the above formula (3), g_iFor a predetermined abscissa, h, of the thermal paper_jξ is a preset ordinate of the thermal paper, gamma is an abscissa translation value of the thermal paper, C (ξ, gamma) is the translation amount, and when the value of C (ξ, gamma) is 0, the positioning mark thermal paper is executed to perform the translation operation.

The operation of coating the fluorescent marking material on at least part of the surface area of the first spacing layer to form the positioning mark information layer can realize the timely translation operation and/or rotation operation of the positioning mark thermal paper, thereby improving the accuracy and the rapidity of positioning the positioning mark thermal paper.

Fig. 2 is a schematic flow chart of a positioning method of a positioning mark thermal paper according to an embodiment of the present invention. The positioning method comprises the following steps:

step S1, scanning and irradiating the positioning mark thermal paper by adopting exciting light, and acquiring the corresponding fluorescence excitation state of the positioning mark information layer under the scanning and irradiation of the exciting light;

step S2, determining the relative position deviation of the positioning mark thermal paper relative to the preset reference plane according to the fluorescence excitation state;

step S3, determining the target translation amount and/or target rotation amount of the positioning mark thermal paper according to the relative position deviation;

in step S4, a translation operation and/or a rotation operation is performed on the positioning mark thermal paper according to the target translation amount and/or the target rotation amount.

Preferably, in step S1, scanning and irradiating the positioning mark thermal paper with excitation light, acquiring the fluorescence excitation state of the positioning mark information layer under the scanning and irradiating of the excitation light specifically includes,

step S101, performing reciprocating scanning irradiation on the positioning mark thermal sensitive paper in a preset period by adopting ultraviolet exciting light;

and step S102, acquiring the visible waveband fluorescence excitation emission direction corresponding to the positioning mark information layer under the reciprocating scanning irradiation of the excitation light.

Preferably, in the step S2, determining the relative positional deviation of the positioning mark thermal paper with respect to the predetermined reference plane based on the fluorescence excitation state specifically includes,

step S201, calculating the angle deviation between the visible waveband fluorescence excitation emission direction and the irradiation direction of the ultraviolet excitation light;

step S202, calculating the relative position deviation of the positioning mark thermal paper relative to a predetermined reference plane according to the angle deviation, wherein the predetermined reference plane is a plane perpendicular to the irradiation direction of the ultraviolet excitation light.

The positioning method determines the position deviation amount of the thermal paper according to the angle deviation between the exciting light direction and the fluorescence direction in an optical measurement mode, and can effectively improve the determination precision of the position deviation amount so as to facilitate the subsequent rapid and accurate translation operation and/or rotation operation of the thermal paper, thereby improving the positioning precision of the thermal paper.

The embodiment of the invention also provides a manufacturing method of the positioning mark thermal sensitive paper, which comprises the following steps:

step S1, forming a base layer through a composite structure base layer formed by laminating a plurality of fiber paper films;

step S2 of applying a thermosensitive color-developing paint to the base layer, thereby forming a thermosensitive color-developing layer;

step S3 of disposing a dense spacing layer of polyester material on the heat-sensitive color-developing layer, thereby forming a first spacing layer;

step S4, coating the fluorescent marking material on at least a part of the surface area of the first spacing layer, thereby forming a positioning mark information layer, which is to acquire the translation amount of the positioning mark thermal paper and a preset coordinate system by an excitation light source, so as to determine whether to perform a translation operation on the positioning mark thermal paper, specifically,

step S401, coating fluorescent marking material on each diagonal area and central area of the positioning mark thermal paper, wherein the shape and the size of the coated area are the same, and acquiring coordinate information P (x) of each area coated by the fluorescent marking material through the following formula (1)_a,y_b)

In the above formula (1), N is the number of thermal paper, m is the radius of the fluorescent marking material coated on each area, a is the length of the thermal paper, and x_aThe length a of the thermal paper is the corresponding horizontal coordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is towards the right, b is the width of the thermal paper, y_bX is the corresponding ordinate information which takes the left lower corner of the thermal paper as the origin and the positive direction is upward when the width of the thermal paper is b₀、y₀The abscissa and ordinate of the origin;

step S402, scanning and irradiating the positioning mark thermal paper by using an exciting light source, and acquiring relative position deviation information R (l) of the positioning mark thermal paper in a preset coordinate system according to the fluorescence excitation state of the positioning mark thermal paper and the following formula (2)_c,w_d)

In the above formula (2), π is the circumferential ratio, arctan is the arctan function, l₀、w₀The initial coordinate corresponding to each area is coated with the fluorescent marking material, c is the transverse distance value of the excitation light source from the initial coordinate of each area coated with the fluorescent marking material, l_cIs a horizontal coordinate value of the corresponding area direction to the left when the horizontal distance value of the excitation light source from the fluorescence labeling material coated on each area is c, d is a vertical distance value of the excitation light source from the initial coordinate of the fluorescence labeling material coated on each area, w_dWhen the excitation light source is far away from the fluorescent markRecording longitudinal coordinate values of the material coated on each area in the left direction of the corresponding area direction when the longitudinal distance value of the material coated on each area is d;

step S403, using the following formula (3), the relative position deviation information R (l) of the positioning mark thermal paper in the preset coordinate system_c,w_d) Comparing the translation amount C (ξ, gamma) with the initial preset coordinate information of the thermal paper in a preset database to obtain the translation amount C (ξ, gamma), and determining whether to execute the translation operation on the positioning mark thermal paper according to the translation amount C (ξ, gamma)

In the above formula (3), g_iFor a predetermined abscissa, h, of the thermal paper_jξ is a preset ordinate of the thermal paper, gamma is an abscissa translation value of the thermal paper, C (ξ, gamma) is the translation amount, and when the value of C (ξ, gamma) is 0, the positioning mark thermal paper is executed to carry out translation operation;

step S5, disposing a dense spacer layer of polyester material on the positioning mark information layer, thereby forming a second spacer layer;

in step S6, an encapsulant is coated on the second spacer layer to form an encapsulation layer.

As can be seen from the above description of the embodiments, the positioning mark thermal paper is formed by sequentially stacking a base layer, a thermal coloration layer, a first spacing layer, a positioning mark information layer, a second spacing layer, and a packaging layer from bottom to top, and the positioning method uses the positioning mark information layer to generate corresponding fluorescence under the action of external excitation light, so as to use the fluorescence as a position indication signal of the thermal paper, and then calculates a relative position deviation of the positioning mark thermal paper with respect to a predetermined reference plane according to an irradiation direction angle deviation between the excitation light and the fluorescence, so as to perform a translation operation and/or a rotation operation on the positioning mark thermal paper based on a target translation amount and/or a target rotation amount corresponding to the relative position deviation; therefore, the positioning mark thermal sensitive paper and the positioning method thereof can realize the rapid and accurate positioning of the thermal sensitive paper and improve the thermal sensitive recording precision of the thermal sensitive paper.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.