Developer container
阅读说明:本技术 显影剂收容容器 (Developer container ) 是由 末永武德 于 2019-09-09 设计创作,主要内容包括:本发明提供一种显影剂收容容器。与以往相比,减轻具有一定流动性的显影剂在从显影剂收容容器排出时凝集在排出口的附近的情况。显影剂收容容器(1)由下述的容器主体(2)、排出部件(3)及限制部件(5)构成。容器主体(2)在输送显影剂的输送方向的下游侧的端部具有开口部(21),具有与输送方向正交的截面为圆形的侧壁(22),还具有在特定的卷绕方向以螺旋状连续且设置于侧壁(22)的内侧的面的突条部(221)。排出部件(3)具有固定于开口部(21)的连结部(35)和排出显影剂的排出部(32)。而且,限制部件(5)在连结部(35)的上游侧具有与输送方向正交的截面为圆形的侧壁部(52),还具有在与突条部(221)相同的卷绕方向以螺旋状向下游侧连续且设置于侧壁部(52)的外侧的面的引导部(53)。(The invention provides a developer container. The developer having a certain fluidity is less likely to aggregate in the vicinity of the discharge port when discharged from the developer container than in the conventional art. The developer container (1) is composed of a container body (2), a discharge member (3), and a regulating member (5) described below. The container body (2) has an opening (21) at the end on the downstream side in the direction of conveyance of the developer, a side wall (22) having a circular cross section orthogonal to the direction of conveyance, and a protruding strip (221) that is continuous in a spiral shape in a specific winding direction and is provided on the inner surface of the side wall (22). The discharge member (3) has a connection section (35) fixed to the opening (21) and a discharge section (32) for discharging the developer. The restricting member (5) has a side wall portion (52) having a circular cross section orthogonal to the conveying direction on the upstream side of the connecting portion (35), and a guide portion (53) that is provided on the outer surface of the side wall portion (52) and that is continuous in a spiral shape on the downstream side in the same winding direction as the protruding strip portion (221).)
1. A developer container is characterized by comprising:
a container main body that contains a developer, has an opening at an end portion on a downstream side in a conveyance direction in which the developer is conveyed, has a side wall portion having a circular cross section orthogonal to the conveyance direction, and further has a first protrusion portion that is provided on an inner surface of the side wall portion and that continues to the downstream side continuously or intermittently in a spiral shape in a specific winding direction;
a discharge member having a connection portion fixed to the opening portion and a discharge port for discharging the developer;
and a restricting member having a curved member with a circular cross section orthogonal to the conveying direction on an upstream side of the connecting portion, and a second protrusion portion that extends spirally toward the downstream side in the specific winding direction and is provided on an outer surface of the curved member.
2. Developer container according to claim 1, characterized in that,
the number of turns of the second projecting part is less than 1.
3. Developer receiving container according to claim 1 or 2,
the pitch of the first protrusion parts is the same as the pitch of the second protrusion parts.
4. The developer container according to any one of claims 1 to 3, wherein the developer container comprises a container body,
the first protrusion is provided from an end portion on the upstream side of the container main body to the opening portion.
5. The developer container according to any one of claims 1 to 3, wherein the developer container comprises a container body,
the first protrusion is provided from an end portion on the upstream side of the container main body to an end portion on the upstream side of the second protrusion.
6. The developer container according to any one of claims 1 to 5, wherein the developer container comprises a container body,
the coupling portion has a hole through which the developer passes in the vicinity of the downstream end of the second protrusion.
7. The developer container according to any one of claims 1 to 6, wherein the developer container comprises a container body,
the curved surface member is provided so as not to be spaced apart from the connecting portion.
8. The developer container according to any one of claims 1 to 6, wherein the developer container comprises a container body,
the curved surface member is provided with a space between the curved surface member and the connection portion.
Technical Field
The present invention relates to a developer container used in an electrophotographic image forming apparatus.
Background
An image forming apparatus of an electrophotographic system forms a toner image on a photoreceptor, an intermediate transfer belt, or the like, and transfers the formed toner image to a sheet of paper by a transfer section. Then, the transferred toner image is fixed to the paper by the fixing section.
Further, a developer container for supplying the developer to the developing unit is mounted in the image forming apparatus. The developer container contains a developer prepared by mixing a toner and an image carrier. The developer container is often configured such that the container main body is arranged in a lateral direction with respect to the image forming apparatus. Further, the developer container is sometimes referred to as a "toner bottle".
A spiral protrusion is provided on the inner circumferential surface of the container body to convey the stored developer. Then, the container body is rotated to convey the contained developer to a discharge port provided at a front end portion of the container body, and the developer is discharged to the developing portion.
The larger the amount of developer accommodated in the container body, the more the amount of developer conveyed to the discharge port is likely to increase compared to the amount of developer discharged from the discharge port. Thus, the density of the developer increases in the space near the discharge port, and the fluidity of the developer is likely to decrease. Therefore, the developer becomes difficult to be discharged from the discharge port.
Therefore, a developer container described in patent document 1 has been proposed. The developer container includes a container body, a discharge member, and a regulating member. The regulating member is disposed in a space formed by the container main body and the discharge member, and partitions the space into a storage space for storing the developer in the container main body and a discharge-side space for storing the developer discharged from the discharge port. Further, the regulating
Disclosure of Invention
However, according to the developer container described in patent document 1, if the developer has a fluidity in a certain range, the developer can be prevented from being aggregated in the vicinity of the discharge port, and the developer can be prevented from being hardly discharged from the discharge port.
However, if the developer is a developer prepared by mixing toners having different flowability, the developer may be difficult to be discharged from the discharge port.
The present invention has been made in view of the above problems, and an object of the present invention is to reduce aggregation of a developer having a certain fluidity in the vicinity of a discharge port when the developer is discharged from a developer container, as compared with the conventional developer container.
A developer container according to an aspect of the present invention includes: a container main body that contains a developer, has an opening at an end portion on a downstream side in a conveyance direction in which the developer is conveyed, has a side wall portion having a circular cross section orthogonal to the conveyance direction, and further has a first protrusion portion that is provided on an inner surface of the side wall portion and that continues to the downstream side continuously or intermittently in a spiral shape in a specific winding direction; a discharge member having a connection portion fixed to the opening portion and a discharge port for discharging the developer; and a restricting member having a curved member with a circular cross section orthogonal to the conveying direction on an upstream side of the connecting portion, and a second protrusion portion that extends spirally toward the downstream side in the specific winding direction and is provided on an outer surface of the curved member.
According to the present invention, it is possible to reduce aggregation of the developer having a certain fluidity in the vicinity of the discharge port when discharged from the developer container, as compared with the conventional art.
Drawings
Fig. 1 is a diagram showing an example of an external appearance of an image forming apparatus.
Fig. 2 is a diagram showing an example of a state when the developer container is attached to the image forming apparatus.
Fig. 3 is a perspective view showing an example of an appearance of the developer container.
Fig. 4 is a diagram showing an example of a state in which the developer container is disassembled.
Fig. 5 is a view showing a state in which the distal end portion of the container body and its vicinity, the discharge member, and the regulating member are cut by a plane parallel to the rotation axis and perpendicular to the horizontal plane.
Fig. 6 is a side view showing an example of the connecting portion and the regulating member.
Fig. 7 is a perspective view showing a state where the coupling portion and the regulating member are separated.
Fig. 8 is a sectional view taken along line a-a of fig. 5.
Fig. 9(a) to (F) are six-side views of the regulating member.
Fig. 10(a) and (B) are perspective views of the regulating member.
Fig. 11(a) and (B) are graphs showing characteristics of the side wall portion and the guide portion, respectively.
Fig. 12 is a diagram showing an example of the flow of the developer in the regulating member and its vicinity.
Fig. 13 is a view showing a modification of the projection of the container body.
Fig. 14 is a view showing a modification of the joining method of the discharge member and the regulating member.
Detailed Description
Fig. 1 is a diagram showing an example of an external appearance of
The
As shown in fig. 2, the developer container 1 is attached to the
The cyan, magenta, yellow, and black
[ Structure of developer storage Container 1 ]
Fig. 3 is a perspective view showing an example of an external appearance of the developer storage container 1. Fig. 4 is a diagram showing an example of a state in which the developer storage container 1 is disassembled.
As shown in fig. 3 or 4, the developer container 1 includes a container
The discharge member 3 is attached to the container front end side of the
[ Container body 2 ]
The developer is accommodated in the container
The
[ discharge part 3 ]
Fig. 5 is a view showing a state in which the distal end portion of the
The discharge member 3 is attached to the
The
The threaded
The
The conveying
The covering
As shown in fig. 6, 7, and 8, the connecting
The
In a state before the developer container 1 is mounted on the
[ Cap 4 ]
As shown in fig. 4, the cap 4 is formed in a hollow substantially truncated cone shape. A screw groove for screwing the
[ limiter 5 ]
Fig. 9 is a six-side view of the restricting
As shown in fig. 9 and 10, the regulating
The
The
The
The direction and pitch of the spiral of the guide portion 53 (the direction of winding) are the same as those of the spiral of the protruding
The
[ discharging action of developer ]
Fig. 12 is a diagram showing an example of the flow of the developer in the regulating
Next, the developer discharge operation of the developer container 1 will be described with reference to fig. 12 and the like.
In advance, the
When the
As shown in fig. 5, a
However, as shown in fig. 12, a certain amount of the developer among the developers conveyed by the protruding
Then, a certain amount of developer passes through the
According to the present embodiment, it is possible to reduce the possibility that the developer having a certain fluidity is aggregated in the vicinity of the discharge port when discharged from the developer storage container 1, as compared with the conventional art. This can reliably suppress the occurrence of a decrease in image density due to discharge failure of the developer or generation of aggregates, as compared with the conventional art. In particular, since the discharge is stable even in a state where the developer is tightly packed, the developer can be stored in the developer storage container 1 more than ever.
[ modified example ]
Fig. 13 is a diagram showing a modification of the protruding
In the present embodiment, the protruding
In the present embodiment, as shown in fig. 5, the regulating
In the present embodiment, the inside of the
In the present embodiment, the portion of the
In the present embodiment, the number of turns of the spiral of the
In the present embodiment, the protruding
The structure of the entire developer container 1 or each part thereof may be appropriately changed according to the concept of the present invention.
Description of the symbols
1 developer container
2 Container body
21 opening part
22 side wall (side wall part)
221 projection strip (first projection)
3 discharge part
32 discharge port (discharge part)
35 connecting part
5 limiting member
52 side wall part (curved surface part)
53 guide part (second projecting part)
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