阅读说明：本技术 供纸检测系统 (Paper feed detection system ) 是由 洪国善 于 2020-06-11 设计创作，主要内容包括：本发明涉及供纸检测系统,包括：供纸装置,包括送风部及搬送部；拍摄设备,适于拍摄沿预定搬送路径移动纸张的图像或者视频；控制部,适于控制送风部启闭及搬送部启闭,发出控制信号；传感器,设于预定搬送路径上,适于检测纸张位置,发出位置信号；处理部,包括：排序单元,适于接收控制信号及位置信号,并根据控制信号及位置信号发出时间,对图像进行排序、或对视频进行分割以形成多个排序的子视频；视频显示装置,适于显示排序后的图像或者子视频。供纸检测系统便于查询录有异常动作的图像及子视频,由此在供纸装置发生故障时能够方便快捷的排解故障。(The present invention relates to a paper feed detection system, including: a paper feeding device comprising an air supply part and a conveying part; a photographing device adapted to photograph an image or video of moving a sheet along a predetermined conveyance path; the control part is suitable for controlling the opening and closing of the air supply part and the opening and closing of the conveying part and sending out control signals; the sensor is arranged on the preset conveying path and is suitable for detecting the position of the paper and sending a position signal; a processing section comprising: the sorting unit is suitable for receiving the control signal and the position signal, and sorting the images or dividing the video to form a plurality of sorted sub-videos according to the sending time of the control signal and the position signal; and the video display device is suitable for displaying the sequenced images or sub-videos. The paper supply detection system is convenient for inquiring the image and the sub-video recorded with abnormal actions, so that the fault can be conveniently and quickly solved when the paper supply device is in fault.)

1. A paper feed detection system comprising:

a paper feeding device comprising: an air supply part for supplying air to the paper to float the paper; a conveying part which is positioned above the paper and conveys the paper to a conveying roller pair at the downstream of the paper feeding device along a preset conveying path after the paper floats upwards;

a photographing device adapted to photograph an image or video of the sheet moving along the predetermined conveyance path;

it is characterized by also comprising:

the control part is suitable for controlling the opening and closing of the air supply part and the opening and closing of the conveying part and sending out control signals;

the sensor is arranged on the preset conveying path and is suitable for detecting the position of the paper and sending a position signal; a processing section comprising: the sorting unit is suitable for receiving the control signal and the position signal, and sorting the images or dividing the video to form a plurality of sorted sub-videos according to the sending time of the control signal and the position signal;

and the video display device is suitable for displaying the sequenced images or the sub-videos.

2. The paper feed detection system of claim 1, wherein the processing portion further comprises: and the screening unit is suitable for screening the sorted images or the sub-videos, and the video display device displays the images or the sub-videos screened by the screening unit.

3. The paper feed detection system of claim 2, wherein the processing portion further comprises: and the screening unit screens the sequenced images or the sub-videos according to the fault information acquired by the fault information acquisition unit.

4. The paper feed detection system of claim 3, wherein the fault information includes occurrence of a wrinkle in a surface of the paper, inclination of a position of the paper, or a dog-ear of the paper.

5. The paper feed detection system of claim 1, wherein the image or the sub-video is transmitted between the video display device and the processing portion by wireless communication or wired communication.

6. The paper feed detection system of claim 5, wherein the video display device is a tablet computer or a smart phone.

7. The paper feed detection system of claim 5, wherein the paper feed device feeds paper to a downstream image forming device, and the video display device is a display screen of the image forming device.

8. The paper feed detection system of claim 1, wherein the capture device is a camera, a tablet computer, or a smartphone.

9. The paper feed detection system of claim 1, wherein the sensor is provided in plural numbers and is arranged at intervals on the predetermined conveyance path.

10. The paper feeding detection system of claim 1, wherein the control unit further comprises an adjustment unit adapted to adjust an opening/closing timing, a wind speed, or a wind blowing direction of the air blowing unit.

Technical Field

The present invention relates to a paper feed detection system, and more particularly, to a paper feed detection system including a processing unit capable of sorting images or dividing a video.

Background

A conventional image forming apparatus, such as a printer or a copier, includes a paper feeding device for carrying paper. The paper supply device is provided with an outer shell which is provided with a cavity for placing stacked paper to be conveyed. The paper feeding device includes an air supply unit and a conveyance unit. Wherein, the air supply part supplies air for the paper to enable the paper to float; the conveying part conveys the paper along a preset conveying path after the paper floats upwards until the paper is conveyed to a conveying roller pair positioned at the downstream of the paper feeding device.

The outer casing of the sheet supply device is usually provided with a viewing aperture. The operator can observe the state of the paper at each stage in the conveying process through the observation hole so as to adjust the air volume of the air supply part.

With the progress of image forming apparatuses, it has become increasingly difficult to check the state of paper with the naked eye through a viewing hole. Taking a high-speed printer as an example, a current high-speed printer can print 2 or more sheets of paper within 1 second, the moving speed of the paper in the paper feeding device and the operating speed of each component of the paper feeding device are very fast, and the state of the paper is difficult to be accurately observed by naked eyes, which brings difficulty to troubleshooting of the image forming apparatus.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a paper feeding device that can easily and quickly resolve a trouble when a trouble occurs in the paper feeding device.

The present invention provides a paper feed detection system, comprising: a paper feeding device comprising: an air supply part for supplying air to the paper to float the paper; a conveying part which is positioned above the paper and conveys the paper to a conveying roller pair at the downstream of the paper feeding device along a preset conveying path after the paper floats upwards; a photographing device adapted to photograph an image or video of the sheet moving along the predetermined conveyance path; the control part is suitable for controlling the opening and closing of the air supply part and the opening and closing of the conveying part and sending out control signals; the sensor is arranged on the preset conveying path and is suitable for detecting the position of the paper and sending a position signal; a processing section comprising: the sorting unit is suitable for receiving the control signal and the position signal, and sorting the images or dividing the video to form a plurality of sorted sub-videos according to the sending time of the control signal and the position signal; and the video display device is suitable for displaying the sequenced images or the sub-videos.

As a result of intensive studies by the inventors of the present invention, it has been found that images or videos are captured by the image capturing device, and the images or videos record the entire process in which the sheet is lifted up by the air blowing part and conveyed by the conveying part through each position of the predetermined conveying path until the sheet is conveyed to the conveying roller pair downstream of the sheet feeding device. The control part is suitable for controlling the opening and closing of the air supply part and the opening and closing of the conveying part. The control part sends out a control signal, the sequencing unit of the processing part receives the control signal, and the starting and closing time of the air supply part and the starting and closing time of the conveying part can be obtained according to the sending time of the control signal. A sensor provided on the predetermined conveyance path is adapted to detect a position of the sheet and to emit a position signal. The sequencing unit receives the position signals and can obtain the time of different positions of the paper path on the preset conveying path according to the sending time of the position signals. The sorting unit sorts the images or divides the video to form a plurality of sorted sub-videos according to the control signals and the sending time of the position signals, different images or sub-videos record the states of the paper at different conveying positions, and the division of the sub-videos corresponds to several stages of the conveying process. And the video display device displays the images or the sub-videos after playing the sequencing. When the paper feeding device has paper conveying abnormality, an operator can inquire the image or the sub-video recorded with abnormal actions by checking the image or the sub-video displayed and played by the video display device, and quickly determine the stage of the paper conveying abnormality, so that convenience is provided for the operator to eliminate the fault.

In the paper feed detection system, the processing unit further includes: and the screening unit is suitable for screening the sorted images or the sub-videos, and the video display device displays the images or the sub-videos screened by the screening unit.

The sorted images or the sub-videos are screened by the screening unit, a part of the images or the sub-videos are selected from the plurality of images or the sub-videos and are displayed by the video display device to be pushed to an operator, so that the workload of the operator for checking the whole number of the images or the sub-videos can be reduced, the operator can more quickly determine the problem of the fault, and the fault can be more quickly solved.

In the paper feed detection system, the processing unit further includes: and the screening unit screens the sequenced images or the sub-videos according to the fault information acquired by the fault information acquisition unit.

The trouble information acquiring unit acquires trouble information of a sheet transported by the sheet feeding device when the sheet feeding device has an abnormality in sheet transport. The screening unit can preliminarily judge which stages of the paper conveying process the fault is likely to occur in according to the fault information acquired by the fault information acquisition unit, so that the images or the sub-videos at the corresponding stages are reserved, and the rest of the images or the sub-videos are screened out. Thereby, the image or the sub-video related to the fault through the preliminary judgment is pushed to the operator by means of the video display device. An operator can quickly determine the fault position of the paper supply device by checking the screened image or the sub-video, so that the time for checking the image or the sub-video irrelevant to the fault is saved, the troubleshooting efficiency is improved, and the paper supply device is ensured to timely recover to normal work.

In the above paper feed detection system, the failure information includes occurrence of a wrinkle on the surface of the paper, inclination of the position of the paper, or a dog-ear of the paper.

The paper surface fold, paper position slope and the paper dog-ear appear and belong to different kinds of trouble, and the trouble kind is different, then the paper that preliminary judgement trouble took place is carried the action stage and is had the difference, from this, the screening of trouble information acquisition unit the image perhaps the sub video also can have the difference, in order to guarantee video display device shows that the broadcast is comparatively relevant with current trouble the image perhaps the sub video to assist operating personnel to reduce the investigation scope, make things convenient for operating personnel to solve the trouble fast.

In the paper feeding detection system, the image or the sub-video is transmitted between the video display device and the processing unit in a wireless communication manner or a wired communication manner.

The video display device and the processing part adopt a wired communication mode to transmit the images or the sub-videos, so that the images or the sub-videos are not easily interfered and have strong confidentiality. The image or the sub-video is transmitted between the video display device and the processing part in a wireless communication mode, so that the component composition of the paper supply detection system can be simplified, the limitation of the wiring length is avoided, and the application scene of the paper supply detection system is favorably expanded.

In the paper supply detection system, the video display device is a tablet computer or a smart phone.

The tablet personal computer or the smart phone is used as the video display device, so that an operator can conveniently check the image or the sub-video output by the processing part, and the operator can also store, edit or send the image or the sub-video, and the video display device is convenient to operate and easy to implement.

In the above paper feed detection system, the paper feed device feeds paper to a downstream image forming apparatus, and the video display device is a display screen of the image forming apparatus.

The video display device is a display screen of the image forming device, and an operator can conveniently view the image or the sub-video. Moreover, in the process that an operator determines the position of the fault and repairs the paper supply device, the inconvenience caused by the fact that the operator carries the video display device by hand can be solved.

In the paper supply detection system, the shooting device is a camera, a tablet computer or a smart phone.

The camera, the tablet personal computer or the smart phone can be used as the shooting equipment to shoot the images or the videos so as to record the paper state of the whole stage of the carrying process, and provide preparation for subsequently sequencing the images according to different carrying stages or cutting the videos to obtain sub-videos.

In the paper feed detection system, the number of the sensors is plural, and the sensors are arranged at intervals on the predetermined conveyance path.

The plurality of sensors are arranged at intervals on the predetermined conveying path, and can provide the time when the paper moves to different sensor positions. Specifically, when the paper moves to one of the sensors, the sensor sends a position signal, the sorting unit receives the position signal, and the time when the paper moves to the sensor can be obtained according to the sending time of the position signal. By acquiring the time when the paper moves to different sensor positions, the sorting unit can sort the images or divide the video to obtain a video clip of the paper in the process of moving between the adjacent sensors as the sub-video. When a fault occurs at a certain position on the preset conveying path, an operator can determine the specific position of the fault by checking the image or the sub-video, so that the operator can conveniently find out the reason of the abnormal action of the paper feeding device.

Drawings

FIG. 1 is a schematic configuration diagram of an image forming system;

fig. 2 to 7 are schematic structural diagrams corresponding to steps of conveying paper by a paper feeding device of a paper feeding detection system according to an embodiment of the present invention;

FIG. 8 is a schematic view of a selected page of the video display device of the paper feed detection system according to one embodiment of the present invention;

FIG. 9 is a schematic view of a selected page of the video display device of the paper feed detection system according to another embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Further, it will be apparent to those skilled in the art that many alternatives thereof are possible in light of the above disclosure, and that the present invention is not limited to the preferred embodiments described herein.

Hereinafter, a specific configuration of the paper feed detection system of the present invention will be described in detail.

Fig. 1 is a schematic configuration diagram of an image forming system 100. Fig. 2 is a schematic configuration diagram of a paper feeding device of the paper feeding detection system according to an embodiment of the present invention.

Referring to fig. 1 and 2, an image forming system 100 includes a paper feed detection system. The paper feed detection system includes: the sheet feeding device includes a sheet feeding device image pickup device, a control section, a sensor 400, a processing section, and a video display device. The paper feeding device comprises an air supply part and a conveying part, wherein the air supply part is used for supplying air to the paper 500 and floating the paper 500; the conveying section is adapted to convey the paper sheet 500 along a predetermined conveying path 301 after the paper sheet 500 floats up. The photographing device is adapted to photograph an image or video of a sheet moving along the predetermined conveyance path 301. The control part is suitable for controlling the opening and closing of the air supply part and the opening and closing of the conveying part and sending out control signals. The sensor 400 is provided on the predetermined conveyance path 301, and adapted to detect the position of the sheet 500 and generate a position signal. The processing section includes: and the sequencing unit is suitable for receiving the control signal and the position signal, and sequencing the images or dividing the video to form a plurality of sequenced sub-videos according to the control signal and the position signal sending time. The video display device is adapted to display the ordered images or the sub-videos.

The image or video is captured by the image capturing device, and the image or video recording paper 500 floats up through the air blowing part and is conveyed by the conveying part to each position of the predetermined conveying path 301 until the paper is conveyed to the conveying roller pair 350 downstream of the paper feeding device.

The control part is suitable for controlling the opening and closing of the air supply part and the opening and closing of the conveying part. The control part sends out a control signal, the sequencing unit of the processing part receives the control signal, and the starting and closing time of the air supply part and the starting and closing time of the conveying part can be obtained according to the sending time of the control signal. The timing of the start and stop of the blowing unit and the start and stop of the conveying unit can be used as a basis for dividing the paper 500 in the middle of the process.

As shown in fig. 2, a sensor 400 provided on the predetermined conveyance path 301 is adapted to detect the position of the sheet 500 and to emit a position signal. The sorting unit receives the position signal, and may obtain the time of the paper 500 passing through different positions of the predetermined conveying path 301 according to the sending time of the position signal, and the time of the paper passing through different positions of the predetermined conveying path 301 may also be used as a basis for dividing each stage in the moving process of the paper 500 along the predetermined conveying path 301.

In this embodiment, the sorting unit divides the video according to the control signal and the sending time of the position signal to form a plurality of sub-videos sorted according to time intervals, different sub-videos record the states of the paper 500 at different carrying positions, and the division of the sub-videos corresponds to several stages of the carrying process. And the video display device displays and plays the sub video. When the paper feeding device has abnormal paper conveying, an operator can check the sub-video displayed and played by the video display device, inquire the sub-video recorded with abnormal actions and quickly determine the stage of the abnormal paper conveying, so that convenience is provided for the operator to eliminate faults.

In another embodiment, the image capturing device captures images of a sheet moving along the predetermined conveyance path, and the sorting unit sorts the images according to the control signal and the timing of the position signal.

As shown in fig. 1, the paper feeding apparatus further includes: a box body 101, wherein the box body 101 is provided with an accommodating cavity, and the accommodating cavity is provided with a top wall, a bottom wall and a side wall; the paper placing tray 110 is arranged in the accommodating cavity, and the paper placing tray 110 is suitable for placing paper sheets 500 (refer to fig. 2) in a stacked state.

As shown in fig. 2, in the present embodiment, the air supply part includes: the fans 230 are disposed on the side walls of the accommodating cavity, and the number of the fans 230 is multiple and is located on two sides of the stacked paper 500 respectively. The fan 230 is adapted to float the paper 500 at the top layer by the wind.

In this embodiment, the air supply part further includes: and the separating fan 210 is arranged on the side wall of the accommodating cavity, and the separating fan 210 is close to the front end of the stacked paper 500. The separation fan 210 is adapted to separate the paper 500 at the top layer from the paper 500 at the lower layer by the wind.

In this embodiment, the air supply part further includes: a separation air duct 211, the separation fan 210 being located in the separation air duct 211. The separation duct 211 has an opening facing the front end of the paper 500 in an oblique direction, and the wind generated by the separation fan 210 is output through the opening.

In this embodiment, the air supply part further includes: the switch plate 212 is disposed on the opening and adapted to cover a portion of the opening, and the switch plate 212 is movable relative to the opening. When the switching plate 212 covers the upper half of the opening, the wind power generated by the separation fan 210 is output from the lower half of the opening. When the switch plate 212 covers the lower half of the opening, the wind generated by the separation fan 210 is output from the upper half of the opening.

In this embodiment, the air supply part further includes: and the suction fan 220 is arranged on the top wall of the accommodating cavity. The suction fan 220 applies an upward suction force to the sheet 500 to be conveyed by the wind force, so that the sheet 500 floats up to the conveying section.

In this embodiment, the conveying unit includes: the suction box is arranged above the paper placing tray 110, and the surface of the suction box is provided with a plurality of air openings; the conveying belt 310 is sleeved on the suction box, and a plurality of through holes are formed in the surface of the conveying belt 310; a driving roller 320, wherein the driving roller 320 is suitable for driving the conveying belt 310 to move. When the paper 500 floats to contact with the surface of the conveying belt 310, the conveying belt 310 moves to drive the paper 500 to move.

In this embodiment, the conveying unit further includes: a detection lever 330 and a transmission-type photoelectric sensor 340 at the rear end of the conveyor belt 310. The detection lever 330 is disposed at the rear end of the conveyor belt 310, one end of the detection lever 330 faces the front end of the paper 500, and the other end of the detection lever 330 faces the rear end of the paper 500. The detection lever 330 has a fulcrum, and both ends of the detection lever 330 can perform lever up-and-down movement around the fulcrum.

The penetrating type photoelectric sensor 340 is close to the rear end of the detection lever 330, and is adapted to sense the lever lifting movement of the detection lever 330.

The paper feed detection system further includes: and a conveying roller pair 350, wherein the conveying roller pair 350 is positioned on the predetermined conveying path 301.

The number of the conveying roller pairs 350 is one or more.

In this embodiment, the sensor 400 is located between the conveying roller pair 350 and the conveying belt 310. The sensor 400 is a reflective photosensor.

The paper feeding apparatus conveys one sheet of paper 500 at a time, and the conveyance of a plurality of sheets of paper 500 can be regarded as a periodic repetitive operation of the paper feeding apparatus. Fig. 2 to 7 are schematic structural diagrams corresponding to respective steps of conveying a sheet 500 by the sheet feeding device of the sheet feeding detection system according to the embodiment of the present invention. Next, the sheet transport process of the sheet feeder will be described in detail with reference to fig. 2 to 7.

Referring to fig. 2, when an operator starts a printing operation, the control part transmits control signals to the separating fan 210, the suction fan 220, and the fan 230. The separation fan 210, the suction fan 220, and the fan 230 are activated to generate wind. The sheet 500 positioned at the top layer in the sheet discharge tray 110 is blown upward to be separated from the sheet 500 positioned at the lower layer.

When the control unit sends a control signal to the separation fan 210, the suction fan 220, and the fan 230, the control unit also sends a signal to the sorting unit, and the sorting unit can obtain the time when the fan 210, the suction fan 220, and the fan 230 are activated.

In this embodiment, the control unit further includes an adjustment unit adapted to adjust an opening/closing timing, a wind speed, or a wind blowing direction of the air blowing unit.

Referring to fig. 3, the top sheet 500 (one or more) is blown close to the conveyor belt 310 by the wind. At this time, the paper 500 touches the front end of the detection lever 330, the front end of the detection lever 330 moves upward around the fulcrum, and the rear end of the detection lever 330 moves downward around the fulcrum. The rear end of the detection lever 330 moves downward to block the transmissive photoelectric sensor 340. When the penetrating type photoelectric sensor 340 is shielded by the rear end of the detection lever 330, the penetrating type photoelectric sensor 340 transmits a shielding signal to the control part. Subsequently, the control section sends a control signal to the suction fan 220, and the suction fan 220 sucks the paper 500 into contact with the surface of the conveying belt 310 by the wind force and keeps sucking the paper 500 onto the surface of the conveying belt 310.

When the control part receives the shielding signal sent by the penetration type photoelectric sensor 340, the control part also sends a signal to the sequencing unit, and the sequencing unit can obtain the time when the penetration type photoelectric sensor 340 is shielded by the rear end of the detection lever 330.

Referring to fig. 4, after the rear end of the detection lever 330 blocks the transmissive photoelectric sensor 340, the control unit sends a stop signal to the fan 230, and the fan 230 stops operating. The switching plate 212 moves from the upper half portion covering the opening to the lower half portion covering the opening, so that the wind output from the separation wind tunnel 211 is blown to the paper 500 attracted to the surface of the conveyance belt 310. The wind blows the paper 500 attracted to the surface of the transport belt 310 one by one, so that the transport belt 310 attracts only one paper 500.

When the control unit sends a stop signal to the fan 230, the control unit also sends a signal to the sorting unit, and the sorting unit can obtain the time when the fan 230 stops.

Referring to fig. 5, after the switching plate 212 moves to the lower half of the opening for a while, the conveying roller pair 350 and the driving roller 320 rotate to start conveying the paper 500. When the paper 500 passes the sensor 400 located on the predetermined conveyance path 301, the sensor 400 sends a position signal.

In this embodiment, the sensor 400 first sends the position signal to the control portion, which sends the position signal to the sorting unit, which thereby obtains the timing at which the sheet 500 passes the position of the sensor 400.

In other embodiments, the sensor 400 sends the position signal directly to the sequencing unit.

The number of the sensors 400 is one or more. In this embodiment, the number of the sensors 400 is plural (only one is shown), and the sensors are arranged at intervals on the predetermined conveying path 301.

The plurality of sensors 400 are arranged at intervals on the predetermined conveyance path 301, and can provide timing when the sheet 500 moves to a position different from the position of the sensor 400. Specifically, when the paper 500 moves to one of the sensors 400, the sensor 400 sends a position signal, the sorting unit receives the position signal, and the time when the paper 500 moves to the sensor 400 can be obtained according to the sending time of the position signal. By acquiring the time when the paper 500 moves to different positions of the sensors 400, the sorting unit can divide the video, and obtain a video segment of the paper 500 in the process of moving between the adjacent sensors 400 as the sub-video. When a fault occurs at a certain position on the predetermined conveying path 301, an operator can determine the specific position of the fault by checking the sub-video, so that the operator can conveniently check the reason of the abnormal operation of the paper feeding device.

In other embodiments, the sorting unit may sort the images by acquiring the time at which the sheet 500 moves to a different position of the sensor 400.

Referring to fig. 6, after the paper 500 is positioned at the sensor 400 for a certain time, the control unit sends a control signal to the conveying unit, and the driving roller 320 of the conveying unit stops rotating.

When the control section sends a control signal to the conveying section, the control section also sends a signal to the sorting unit, and the sorting unit can thereby obtain the timing at which the drive roller 320 stops.

Referring to fig. 7, after the rear end of the paper 500 is separated from the detection lever 330, the detection lever 330 rotates under the action of its own weight, the rear end of the detection lever 330 rises, the penetrating photoelectric sensor 340 is no longer shielded, and the penetrating photoelectric sensor 340 sends a non-shielding signal to the control unit.

When the control part receives the non-shielding signal sent by the penetrating photoelectric sensor 340, the control part also sends a signal to the sequencing unit, and the sequencing unit can obtain the time when the rear end of the paper 500 is separated from the detection lever 330.

When the second sheet 500 is conveyed, the switching plate 212 moves from the lower portion covering the opening to the upper portion covering the opening, and the separation fan 210, the suction fan 220, and the fan 230 are simultaneously activated to generate wind force to blow up the sheet 500 positioned on the top. The next operation refers to the conveyance flow of the first sheet 500.

In the present embodiment, the above-described flow of conveying the first sheet of paper 500 is repeated, and the paper feed device can convey a plurality of sheets of paper 500. Thus, the video records the entire process of each sheet transport. The sorting unit can divide the conveying process of each paper 500 in the video according to the control signal and the sending time of the position signal, so that an operator can conveniently check the whole conveying process of any paper, the affected paper 500 can be conveniently determined when a fault occurs, and the affected paper 500 can be timely processed.

The processing section further includes: and the screening unit is suitable for screening the sorted images or the sub-videos, and the video display device displays the images or the sub-videos screened by the screening unit.

The sorted images or the sub-videos are screened by the screening unit, a part of the images or the sub-videos are selected from the plurality of images or the sub-videos and are displayed by the video display device to be pushed to an operator, so that the workload of the operator for checking the whole number of the images or the sub-videos can be reduced, the operator can more quickly determine the problem of the fault, and the fault can be more quickly solved.

In this embodiment, the processing unit further includes: and the screening unit screens the sequenced images or the sub-videos according to the fault information acquired by the fault information acquisition unit.

The trouble information acquiring unit acquires trouble information of a sheet transported by the sheet feeding device when the sheet feeding device has an abnormality in sheet transport. The screening unit can preliminarily judge which stages of the paper conveying process the fault is likely to occur in according to the fault information acquired by the fault information acquisition unit, so that the images or the sub-videos at the corresponding stages are reserved, and the rest of the images or the sub-videos are screened out. Thereby, the image or the sub-video related to the fault through the preliminary judgment is pushed to the operator by means of the video display device. An operator can quickly determine the fault position of the paper supply device by checking the screened image or the sub-video, so that the time for checking the image or the sub-video irrelevant to the fault is saved, the troubleshooting efficiency is improved, and the paper supply device is ensured to timely recover to normal work.

In this embodiment, the fault information includes the occurrence of a wrinkle on the surface of the sheet, the inclination of the position of the sheet, or the occurrence of a dog-ear in the sheet.

The paper surface fold, paper position slope and the paper dog-ear appear and belong to different kinds of trouble, and the trouble kind is different, then the paper that preliminary judgement trouble took place is carried the action stage and is had the difference, from this, the screening of trouble information acquisition unit the image perhaps the sub video also can have the difference, in order to guarantee video display device shows that the broadcast is comparatively relevant with current trouble the image perhaps the sub video to assist operating personnel to reduce the investigation scope, make things convenient for operating personnel to solve the trouble fast.

Fig. 8 is a schematic diagram of a selection page 600 of the video display device of the paper feeding detection system according to an embodiment of the invention.

Referring to fig. 8, a selection page 600 of the video display apparatus displays three menu bars of "abnormal classification", "paper", and "observation period". The submenu of the 'abnormal classification' menu bar lists different fault information, and the method comprises the following steps: wrinkles, slow printing speed, skew, dog-ear, etc. The submenu of the "paper" menu bar lists the number of each carried paper. The submenu of the "observation period" menu bar lists different stages of the sheet carrying process including "sheet arrival at the carrying belt", "sheet arrival at the reflection type photosensor 400", "sheet end passage through the detection lever", and the like. The term "paper arrival at the conveyor belt" refers to a period of time from when the separating fan 210, the suction fan 220, and the fan 230 are simultaneously activated until the rear end of the detection lever 330 shields the transmissive photoelectric sensor 340. The "paper arrival at the reflection type photosensor 400" refers to a period of time from when the rear end of the detection lever 330 shields the penetration type photosensor 340 to when the paper 500 passes the reflection type photosensor 400. The "paper end passing detection lever" refers to a period from when the paper 500 passes the reflective photosensor 400 to when the paper end passes the detection lever 330.

The operator clicks the number of the pre-browsed paper 500 in the sub-menu of the 'paper' menu bar, clicks the pre-browsed transportation stage in the sub-menu of the 'observation period' menu bar, and finally clicks the 'play' button, so that the sub-video of the pre-browsed paper 500 in the selected transportation process period can be viewed.

With continued reference to fig. 8, for example, the 6 th sheet is jammed during conveyance. The reason the operator speculates may be: (1) in the width direction of the paper 500, the distance between the paper 500 and the aligning plates disposed at both sides of the paper 500 is too small; (2) the sheet 500 is wider than the set size; (3) the air supply time of the air supply part is insufficient; (4) the wind force of the wind supply part is insufficient. An operator selects the 6 th paper in the paper menu bar on the selection page 600 of the video display device, selects the paper arrival conveying belt in the observation period menu bar, clicks the play button, and can check the sub-video of the 6 th paper in the selected conveying process period, so that the specific cause of the fault can be checked by checking the recorded sub-video. The selected carrying process time period is a time period from the simultaneous activation of the separating fan 210, the suction fan 220, and the fan 230 to the shielding of the transmissive photoelectric sensor 340 by the rear end of the detection lever 330. If the played sub-video shows that the 6 th paper is still, whether the reason of the paper jam is caused by too small distance between the paper 500 and the organizer plates arranged at the two sides of the paper 500 in the width direction of the paper 500 can be further confirmed; or because the paper 500 is oversized.

FIG. 9 is a schematic view of a selected page 600 of the video display device of the paper feed detection system according to another embodiment of the present invention.

Referring to fig. 9, in another embodiment, the 6 th sheet is wrinkled during the conveyance. The failure information acquisition unit acquires failure information that a wrinkle occurs on the surface of the paper. And the screening unit automatically pushes a fold column in an abnormal classification menu column according to the fault information acquired by the fault information acquisition unit. In addition, the screening unit judges that the wrinkle fault information occurs, and the fault reason generally does not occur in the time periods of "paper arrival at the conveying belt" in the "observation period" menu bar and "paper arrival at the reflective photosensor 400", so that the option of "paper arrival at the conveying belt" in the "observation period" menu bar and "paper arrival at the reflective photosensor 400" changing to gray cannot be selected. In the 'observation time interval' menu bar, only one bar of 'the tail end of the paper passes through the detection rod' can be selected. The operator selects the 6 th paper in the paper menu bar, clicks the paper tail end in the observation time interval menu bar through the detection rod, and clicks the play button, so that the sub-video of the 6 th paper in the selected carrying process time interval can be checked, the troubleshooting range is narrowed, and the troubleshooting efficiency is improved. The selected transport process time period is a time period from when the sheet 500 passes through the reflective photosensor 400 to when the trailing end of the sheet passes through the detection lever 330, and the occurrence of wrinkles in the sheet 500 is closely related to the components that operate during the time period.

The shooting equipment is a camera, a tablet personal computer or a smart phone

The camera, the tablet personal computer or the smart phone can be used as the shooting equipment to shoot the images or the videos so as to record the paper state of the whole stage of the carrying process, and provide preparation for subsequently sequencing the images according to different carrying stages or cutting the videos to obtain sub-videos.

And the video display device and the processing part adopt a wireless communication mode or a wired communication mode to transmit the sub-video.

The video display device and the processing part adopt a wired communication mode to transmit the images or the sub-videos, so that the images or the sub-videos are not easily interfered and have strong confidentiality. The image or the sub-video is transmitted between the video display device and the processing part in a wireless communication mode, so that the component composition of the paper supply detection system can be simplified, the limitation of the wiring length is avoided, and the application scene of the paper supply detection system is favorably expanded.

In this embodiment, the sub-video is transmitted between the video display device and the processing unit in a wireless communication manner, where the wireless communication manner includes: a WIFI communication mode or a Bluetooth communication mode.

The sub-video is transmitted in a WIFI communication mode and a Bluetooth communication mode, has the advantages of wide coverage range and high transmission speed, does not need wiring, and is more flexible in use mode.

The video display device is a tablet computer or a smart phone, so that an operator can conveniently check the image or the sub-video output by the processing part, and the operator can also store, edit or send the image or the sub-video, so that the operation is convenient and fast, and the implementation is easy.

In the present embodiment, the paper feeding device feeds paper to the downstream image forming apparatus 10, and the video display device is the display screen 20 of the image forming apparatus 10.

In this embodiment, the video display device is a display screen 20 of the image forming apparatus 10, so that an operator can view the sub-video conveniently. Moreover, in the process that an operator determines the position of the fault and repairs the paper supply device, the inconvenience caused by the fact that the operator carries the video display device by hand can be solved.

As shown in fig. 1, the image forming system 100 further includes the image forming apparatus 10, and the image forming apparatus 10 further includes: a transfer section 31 adapted to transfer toner onto a sheet; and a fixing section 32 adapted to perform a fixing process on the paper.

The image forming apparatus 10 further includes: a display screen 20 adapted to display the images or the sub-videos screened by the screening unit, and also to display the working states of the paper feeding device, the transfer portion 31 and the fixing portion 32, and also to display the operation instructions of the operator; and an operation panel 21 adapted for an operator to input an operation instruction.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.