JP5600661B2 - Erasing device and recording medium conveyance control method - Google Patents

Description

  Embodiments described herein relate generally to a decoloring apparatus that erases an image on a sheet on which an image is formed by an image forming apparatus, and a conveyance control method for a recording medium.

  2. Description of the Related Art There is known a decoloring apparatus that erases the color of an image by performing a decoloring process on high-temperature heat on a sheet on which an image is formed by an image forming apparatus. However, when a paper jam occurs in the erasing apparatus, the erasing apparatus stops its operation, and the paper on which no jam has occurred remains in the transport path. At this time, there arises a problem that it is necessary to open the cover and take out the paper on which the jam has not occurred from the conveyance path.

JP 2000-352890 A

  A problem to be solved by an embodiment of the present invention is to provide a decoloring apparatus that improves operability.

In order to solve the above-described problem, an erasing apparatus according to an embodiment of the present invention includes a paper feeding unit that feeds a recording medium, a paper discharging unit that discharges the recording medium, and a paper discharge unit that discharges the recording medium. A first conveyance path to the printing unit, a reading unit that is arranged in the first conveyance path and reads an image recorded on the recording medium, branches from the reading unit in the conveyance direction of the recording medium, and A second conveyance path that merges upstream of the first conveyance path in the conveyance direction of the recording medium, and a second conveyance path that is disposed in the second conveyance path and that is heated in contact with the recording medium, thereby generating an image of the recording medium. A color erasing unit for erasing the color, a conveyance unit for conveying the recording medium along the first and second conveyance paths, a sensor for detecting the recording medium conveyed by the conveyance unit, and the sensor When the occurrence of a jam in the recording medium is detected by the And a control unit for controlling so as to convey the recording medium present in the transport path.

It is a system configuration figure in a first embodiment. It is a block diagram of the decoloring apparatus in 1st embodiment. It is a block diagram of a decoloring apparatus, a client PC, and a server in the first embodiment. It is a figure which shows conveyance of the 1st paper in the 1st conveyance path in 1st embodiment. FIG. 6 is a diagram illustrating conveyance of a first sheet on a second conveyance path and conveyance of a second sheet on a first conveyance path in the first embodiment. FIG. 5 is a diagram illustrating conveyance of a first sheet from a second conveyance path to a first conveyance path and conveyance of a second sheet on a second conveyance path in the first embodiment. FIG. 5 is a diagram illustrating conveyance of a second sheet on a second conveyance path and conveyance of a third sheet on a first conveyance path in the first embodiment. It is a figure which shows conveyance of the 2nd sheet | seat from the 2nd conveyance path in a 1st embodiment to a 1st conveyance path, and conveyance of the 3rd sheet | seat in a 2nd conveyance path. 6 is a flowchart of paper conveyance control when a jam occurs in the first embodiment. It is a figure which shows the state which jammed in the paper feed part in 1st embodiment. 10 is a flowchart of paper conveyance control when a jam occurs in the second embodiment. 12 is a flowchart continued from FIG. 11 in the second embodiment. FIG. 10 is a diagram illustrating a state in which a paper jam occurs in a paper feeding unit and a preceding paper is conveyed in a second embodiment. FIG. 10 is a diagram illustrating a state in which a jam occurs in a color erasing unit according to a second embodiment and a subsequent sheet is conveyed. FIG. 10 is a diagram illustrating a state in which a jam occurs in a color erasing unit according to a second embodiment and a preceding sheet is conveyed.

  Hereinafter, an embodiment of a decoloring apparatus will be described with reference to the accompanying drawings.

(First embodiment)
The decoloring apparatus according to the first embodiment discharges a sheet on which no jam has occurred to the discharge unit when a jam has occurred and a sheet on which no jam has occurred exists in the transport path. For example, when a jam occurs in the paper feed unit and the leading edge of the jammed paper exists upstream of the junction of the first transport path and the second transport path, the processing of the preceding paper is continued.

  FIG. 1 is a system configuration diagram of the first embodiment. The image storage system includes, for example, a plurality of decoloring apparatuses 100, a plurality of client PCs (Personal Computers) 101, and a server 102 as a system configuration. Each component of the system is connected via a network 103 such as a LAN (Local Area Network).

  FIG. 2 is a configuration diagram of the erasing apparatus. The erasing apparatus 100 erases the image of the paper (recording medium) on which the image is formed by the image forming apparatus, and enables the paper to be reused. The erasing apparatus 100 includes a paper feeding unit 10, a first conveyance path 11, a second conveyance path 12, a first reading unit 13, a second reading unit 14, a decoloring unit 15, a conveyance roller 16, and a path change. Unit 17, first paper discharge unit 19, and second paper discharge unit 20.

  The paper feeding unit 10 stores paper P to be reused, and feeds the image formed on the paper P with a color erasable material into the erasing apparatus 100 in order to erase the image. The paper feed unit 10 includes a paper feed tray 22, a pickup roller 18, a separation roller 112, a double feed detection sensor 113, and a registration roller 114. The paper feed tray 22 stacks paper P. The pickup roller 18 takes out the paper P one by one from the paper feed tray 22 and sends it out to the first transport path 11.

  The first transport path 11 and the second transport path 12 have a plurality of transport rollers 16. The conveyance roller 16 has a plurality of conveyance rollers 16a, 16b, 16c, 16d, 16e, 16f, 16g, 16h, 16i, 16j, and 16k, and is configured by a pair of a driving roller and a driven roller. A first reading unit 13 and a second reading unit 14 are arranged along the first conveyance path 11. The first reading unit 13 and the second reading unit 14 have a two-dimensional CCD scanner. The first reading unit 13 scans one side of the sheet conveyed from the sheet feeding unit 10. The second reading unit 14 scans the surface opposite to the reading surface of the first reading unit 13. An image read by scanning by the first reading unit 13 and the second reading unit 14 is stored in a RAM (Random Access Memory) 203 which is a storage unit shown in FIG. The storage destination of the image read by the first reading unit 13 and the second reading unit 14 is not limited to the RAM 203, but is a ROM (Read Only Memory) 202, an HDD (Hard Disk Drive), an optical magnetic memory, or the like. Also good. Further, the image temporarily stored in the RAM 203 may be sent to the HDD and stored in the HDD when the decoloring process is completed, for example.

  The images read by the first reading unit 13 and the second reading unit 14 are not limited to be stored in the RAM 203 of the erasing apparatus 100 but are stored in the RAM 302 of the client PC 101 and the RAM 402 of the server 102 shown in FIG. May be. In addition, when the erasing apparatus 100 has a login / logout function for personal authentication of the user, when the erasing apparatus 100 logs out, the image data stored in the RAM 203 of the erasing apparatus 100 is stored in the RAM 302 of the client PC 101. Alternatively, it may be transmitted to the RAM 402 of the server 102 and stored.

  Further, the first reading unit 13 and the second reading unit 14 determine whether or not the paper P can be used after the decoloring process and whether or not the printing (image) of the paper has been decolored. Read the surface.

  Reading by the first reading unit 13 and the second reading unit 14 is performed twice. The first reading unit 13 and the second reading unit 14 digitize the read image in the first reading and store it in the storage unit. The first reading unit 13 and the second reading unit 14 determine whether or not the paper P can be reused in the second reading after the color erasing.

  The image may be stored in the first reading, and it may be determined whether or not the image is unusable due to wrinkles, stapling, memo writing that cannot be erased, or the like. In this case, if it is determined that the reusable state is obtained by the first reading, a decoloring process is performed, and it is determined whether the image of the paper P is decolored by the second reading, For example, the paper is discharged to the first paper discharge unit 19. If it is determined in the first reading that the state cannot be reused, a color erasing process is performed, and the paper is discharged to, for example, the first paper discharge unit 19 without performing the second reading. Further, if it is determined that the state cannot be reused by the first reading, the sheet is discharged to, for example, the first discharge unit 19 without performing the decoloring process and the second reading. Also good. These settings can be selected and set in advance. The first reading unit 13 and the second reading unit 14 are not limited to a pair of two-dimensional CCD scanners, and may be CMOS sensors.

  As shown in FIG. 2, the first transport path 11 is connected from the paper supply unit 10 to the first paper discharge unit 19 or the second paper discharge unit 20. The second transport path 12 branches from a branch point downstream of the first reading unit 13 and the second reading unit 14 of the first transport path 11, and the first reading unit 13 of the first transport path 11. And merge at the merging point upstream of the second reading unit 14. A first route changing unit 17 is arranged at the branch point.

  The second transport path 12 has a decoloring unit 15 in the transport path. The erasing unit 15 includes the roller pair 21, the heater 205, the paper detection sensor 212, and the temperature detection unit 213 illustrated in FIG. 3. The temperature detection unit 213 detects the temperature of the decoloring unit 15. The roller pair 21 is heated by the heater 205. By applying a certain temperature or heat to the sheet P through the roller pair 21 heated by the heater 205, the image of the sheet P formed using the erasable image forming material is heated, and the coloring material Is colorless. The color material is, for example, metamo ink. The erasing unit 15 can erase the image on both sides of the paper P by erasing the image with the roller pair 21.

  The paper discharge unit 23 includes a first paper discharge unit 19 and a second paper discharge unit 20. The paper P that has been subjected to various processes such as a reading process, a color erasing process, and a sorting process is discharged to the first paper discharge unit 19 or the second paper discharge unit 20. The user may be selectable so that the paper P can be discharged to either the first paper discharge unit 19 or the second paper discharge unit 20.

  FIG. 3 is a block diagram of the erasing apparatus 100, the client PC 101, and the server 102. A CPU (Central Processing Unit) 200 that is a control unit of the erasing apparatus 100 includes a ROM 202, a RAM 203, a first reading unit 13, a CCD scanner 204 of the second reading unit 14, and an erasing unit 15 via a system bus 201. The heater 205 is connected to a communication interface (I / F) 206 that inputs data from the outside and outputs data to the outside. The CPU 200 communicates with the client PC 101 and the server 102 through a communication I / F 206 connected via the system bus 201.

  The CPU 200 also includes a path change control drive unit 207 that controls the path change unit 17, a paper carry motor control drive unit 208 that controls the paper carry motor 209, an operation unit 210, a display unit 211, a paper detection sensor 212, and A temperature detector 213 is connected. The paper transport motor 209 drives the plurality of transport rollers 16 shown in FIG.

  The ROM 202 stores a program for operating the CPU 200, a sheet printing rate as a guideline for reusability, and a density threshold for determining whether or not an image has been erased. Further, when determining the wrinkle depth and the like in the first image reading, a density threshold value used for determining the wrinkle depth and the like is stored. The RAM 203 stores an image obtained when the image of the paper P is read. The CCD scanner 204 is arranged as a single line sensor and detects the density of the paper P. The heater 205 uses an IH heater or the like, and applies heat to the paper P through the roller pair 21 while the paper P passes through the erasing unit 15 to make the color material colorless.

  The operation unit 210 has various keys, and the display unit 211 displays various processing modes of the erasing apparatus 100. The operation unit 210 can select a processing mode. The processing mode includes a reading mode for reading an image, a color erasing mode for erasing the image, a sorting mode for reading the image and determining whether or not the paper can be reused, and a mode combining these modes. The display unit 211 may be a touch panel type or may serve as an operation unit.

  The CPU 200 controls the route change control drive unit 207 to drive the route change unit 17 to sort the paper P to be transported from the first transport path 11 to the second transport path 12, Sorting is performed so that the paper P is transported from the transport path 11 to the first paper discharge unit 19 and the second paper discharge unit 20. Further, the CPU 200 determines whether or not the color erasing is normally performed after the image erasing, that is, whether or not the paper P is reusable.

  The paper detection sensor 212 detects paper. The paper detection sensor 212 includes a plurality of paper detection sensors 22, 23, 24, 25, 26, and 27, and a plurality of paper detection sensors 212 are arranged in the conveyance path. After the paper P is detected by the first paper detection sensor 22, if the paper P is not detected by the second paper detection sensor 23 within a predetermined number of pulses or within a predetermined time, it is determined that a jam has occurred. When determining the occurrence of a paper jam based on the number of pulses, for example, the second paper detection sensor 23 detects the paper P even if 115 pulses have elapsed since the first paper detection sensor 22 detected the paper P. If not, it is determined that a paper jam has occurred. When a paper jam occurs, the detection result of the paper detection sensor 212 is transmitted to the CPU 200, and the CPU 200 determines whether or not a paper jam has occurred based on the detection result.

  If the paper detection sensor 22 or the paper detection sensor 23 detects the paper when the paper jam occurs, it can be determined that the paper is in the reading units 13 and 14. If the paper detection sensor 25 or the paper detection sensor 26 detects the paper P when the paper jam occurs, it can be determined that the paper is in the decoloring portion 15. If the paper detection sensor 24 detects paper when a paper jam occurs, it can be determined that the paper is upstream of the decoloring section 15 of the second transport path 12. If the paper detection sensor 27 detects paper when a paper jam occurs, it can be determined that the paper is downstream of the decoloring section 15 of the second transport path 12.

  The client PC 101 includes a CPU 300, a ROM 301, a RAM 302, an operation unit 303, a display unit 304, and a communication I / F 305. A CPU 300 that is a control unit of the client PC 101 is connected to a ROM 301, a RAM 302, an operation unit 303, a display unit 304, and a communication I / F 305 via a system bus 306.

  The server 102 includes a CPU 400, a ROM 401, a RAM 402, and a communication I / F 403. A CPU 400 that is a control unit of the server 102 is connected to a ROM 401, a RAM 402, and a communication I / F 403 via a system bus 4040.

  Next, with reference to FIG. 4 to FIG. 8, a description will be given of parallel processing in which a plurality of sheets are continuously read, erased, and sorted, and the processing is shifted for each sheet.

  For the decoloring process of the first sheet P, the reading process is performed by the first reading unit 13 and the second reading unit 14 which are reading units, the decoloring process is performed by the decoloring unit 15, and the first reading is performed again. The reading process is performed by the unit 13 and the second reading unit 14, and the process is performed in the order of the sorting process for determining whether or not it can be reused.

  Hereinafter, processing for performing reading, decoloring, and sorting for three consecutive sheets will be described. The preceding paper P is designated as the first paper P1, and the paper conveyed next to the first paper P1 is designated as the second paper P2 and the third paper P3 in order. First, as shown in FIG. 4, the first paper P <b> 1 is fed and transported through the first transport path 11, and reading processing is performed by the first reading unit 13 and the second reading unit 14.

  Subsequently, as shown in FIG. 5, the first sheet P <b> 1 is transported to the second transport path 12, and the erasing process is performed by the erasing unit 15. In parallel with the color erasing process on the paper P1, the second paper P2 is fed and conveyed to the first conveyance path 11, and the first reading unit 13 and the second reading unit 14 perform the reading process. I do.

  After that, as shown in FIG. 6, the first sheet P1 is transported through the first transport path 11, the image is read by the first reading unit 13 and the second reading unit 14, the separation processing is performed, Paper is discharged to the first paper discharge unit 19 or the second paper discharge unit 20. In parallel with the sorting process to the paper P1, the second paper P2 is transported to the second transport path 12, and the decoloring unit 15 performs the decoloring process.

  Further, as shown in FIG. 7, in parallel with the execution of the color erasing process on the second paper P2, the third paper P3 is fed and transported through the first transport path 11 to perform the first reading. The reading process is performed by the unit 13 and the second reading unit 14.

  Then, as shown in FIG. 8, the second sheet P2 is conveyed again through the first conveyance path 11, the image is read by the first reading unit 13 and the second reading unit 14, and separation processing is performed. Paper is discharged to the first paper discharge unit 19 or the second paper discharge unit 20. In parallel with the sorting process to the paper P2, the third paper P3 is transported to the second transport path 12, and the decoloring unit 15 performs the decoloring process. Thereafter, the processing is repeated as described above.

  When the above processing is repeated, reading processing is performed in the following order. First reading process, second reading process, first sheet sorting process, third sheet reading process, second sheet sorting process, and finally (N-2) th sheet sorting process , N-th reading process, (N-1) -th sorting process, and N-th sorting process. N is an integer.

  Next, paper conveyance control when a paper jam occurs will be described. FIG. 9 is a flowchart of sheet conveyance control when a sheet jam occurs. Control of the following flowchart of FIG. 9 is performed by the CPU 200 which is a control unit.

  In 700, the CPU 200 starts a job. In 701, the CPU 200 conveys the paper P from the paper supply unit 10. In 702, the CPU 200 determines whether or not a paper jam has occurred. If no paper jam has occurred (No in 702), the process ends.

  If the CPU 200 detects a paper jam (Yes in 702), in 703, whether or not the leading edge of the paper P that caused the jam exists downstream of the confluence of the first transport path 11 and the second transport path 12. Judging. When the leading edge of the paper P causing the jam exists downstream of the junction of the first conveyance path 11 and the second conveyance path 12 (Yes in 703), the CPU 200 stops the operation in 704. Thereafter, the CPU 200 displays, for example, an error code on the display unit 211 in 705, and ends.

  If the leading edge of the paper P that caused the jam exists upstream of the junction of the first transport path 11 and the second transport path 12 (No in 703), the CPU 200 generates a jam in the transport path in 706. It is determined whether or not there is a sheet P other than the sheet P that has been set. When there is no paper P other than the paper P that causes the jam in the transport path (Yes in 706), the CPU 200 stops the operation in 704. Thereafter, the CPU 200 displays, for example, an error code on the display unit 211 in 705, and ends.

  If there is a paper P other than the paper P that caused the jam in the transport path (No in 706), the CPU 200 continues processing of the paper P other than the paper P that caused the jam in 707. In step 708, the CPU 200 determines whether or not the discharge of all the sheets P has been completed. If all the sheets P have not been discharged (No in 708), the CPU 200 controls to repeat the processing in 708. When all sheets are discharged (Yes in 708), the CPU 200 displays, for example, an error code on the display unit 211 in 705, and ends.

  FIG. 10 is a diagram illustrating a state in which the preceding first sheet P1 is transported from the first transport path 11 to the second transport path and the second sheet P2 is jammed in the sheet feeding unit 10. is there. That is, it is a state determined as No in 706 of FIG.

  At this time, since the leading edge of the subsequent second paper P2 exists upstream of the junction of the first transport path 11 and the second transport path 12, the transport and processing of the first paper P1 can be performed. . Therefore, the CPU 200 controls to continue the conveyance and processing of the first sheet P1. The first paper P1 that has been processed is discharged to the paper discharge unit 23. The CPU 200 reads the first paper P1 by, for example, a reading process for reading an image by the first reading unit 13 and the second reading unit 14, a decoloring process by the decoloring unit 15, and the first again. The reading unit 13 and the second reading unit 14 read the image, and control to perform a sorting process for determining whether or not the sheet can be reused.

  The leading edge of the second sheet P2 is jammed in the sheet feeding unit 10 and the trailing edge is present on the sheet feeding tray 22. Therefore, the second sheet P2 can be jammed without opening the cover of the erasing apparatus 100. is there.

  Normally, when a paper jam occurs in the erasing device, the erasing device stops operating, and the paper that does not generate a jam also remains in the transport path, and the cover is opened and a jam occurs. It is necessary to take out the unused paper from the conveyance path. However, since the erasing apparatus 100 as described above continues the processing of paper that does not cause a jam, the operability can be improved.

(Second embodiment)
The decoloring apparatus according to the second embodiment shown in FIGS. 11 to 15 is configured such that when a paper jam has occurred and a paper without a jam is present in the transport path, the paper without a jam is discharged from the discharge unit. To discharge. If the apparatus must be stopped while the paper is in the erasing portion, the paper in the erasing portion is moved from the erasing portion. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals.

  When a jam occurs in a state where a sheet exists in the erasing unit 15, the CPU 200 first conveys the sheet in the erasing unit 15 in the conveyance direction. If the paper detection sensor 25 or the paper detection sensor 26 detects a paper even after a certain number of pulses have elapsed, the CPU 200 determines that the conveyance is impossible. When the CPU 200 determines that the conveyance is impossible, the sheet is conveyed in the direction opposite to the conveyance direction and conveyed outside the erasing unit 15.

  When the paper in the erasing unit 15 is transported in the transport direction and a certain number of pulses have elapsed, if the paper detection sensor 25 or the paper detection sensor 26 has not detected the paper, the CPU 200 determines that the paper is the erasing unit 15. Judged to have been transported outside. Thereafter, the CPU 200 controls to further convey the sheet in the conveyance direction and discharge it to the sheet discharge unit 23. Further, even if a certain number of pulses have elapsed after the paper detection sensor 26 detects the paper, if the paper P is detected by the paper detection sensor 27, the CPU 200 is in the vicinity of the paper discharge unit 119. Judge.

  When a jam occurs, the rotation of the pickup roller 111, the separation roller 112, the registration roller 114, the transport rollers 115 and 123, and the discharge roller 118 is stopped.

  FIG. 11 and FIG. 12 are flowcharts of paper conveyance control when a paper jam occurs. Control of the following flowcharts of FIGS. 11 and 12 is performed by the CPU 200 which is a control unit. The CPU 200 conveys the paper P in 600 and determines in 601 whether or not a paper jam has occurred. If a paper jam does not occur (No in 601), the CPU 200 ends the process. If a paper jam occurs (Yes in 601), the CPU 200 determines in 602 whether or not there is a paper P in the erasing unit 116. If there is no paper P in the erasing unit 116 (No in 602), the CPU 200 stops driving the transport roller 16 in 603, stops transporting the paper P, and ends.

  When there is a sheet P in the erasing unit 116 (Yes in 602), the CPU 200 determines in 604 in FIG. 12 whether or not the sheet P during the erasing process has jammed. If the paper P being erased has jammed (Yes in 604), the CPU 200 transports the paper P in the direction opposite to the transport direction in 605. The transport rollers 115 and 123 are rotated in the reverse direction to transport the paper P in the reverse direction of the transport direction. Thereafter, the CPU 200 determines in 606 whether or not the transfer to the outside of the decoloring unit 116 is completed. If the transfer to the outside of the erasing unit 116 is not completed, the CPU 200 repeats the determination of 606. When the transfer to the outside of the erasing unit 116 is completed (Yes in 606), the process returns to FIG. 11, and the CPU 200 stops the conveyance in 603 and ends.

  If the paper P being erased has not jammed (No in 604 in FIG. 12), the CPU 200 continues the conveyance process in 607 and determines in 608 whether or not the discharge has been completed. If the discharge is not completed (No in 608), the CPU 200 repeats the determination in 608. When the discharge is completed (Yes in 608), the CPU 200 returns to FIG. 11, stops the conveyance in 603, and ends.

  FIG. 13 is a diagram illustrating a state in which the second paper P2 is jammed in the paper feeding unit 10 and the first paper P1, which is the preceding paper, is stopped in the erasing unit 15. At this time, the leading edge of the second paper P2 as the succeeding paper exists upstream of the confluence of the first transport path 11 and the second transport path 12, so that the transport and processing of the first paper P1 is possible. It becomes. Therefore, the first paper P1 continues to be conveyed and processed. The first paper P1 that has been processed is discharged to the paper discharge unit 23.

  Since the leading edge of the second sheet P2 is jammed in the sheet feeding unit 10 and the trailing edge is on the sheet feeding tray 22, the sheet jam processing can be performed without opening the cover of the erasing apparatus 100. is there.

  Next, a case where a jam occurs in the erasing unit 15 in the first sheet P1 that is a preceding sheet will be described. FIG. 14 is a diagram illustrating a state in which the first paper P1 is jammed in the erasing unit 15 and the second paper P2, which is a subsequent paper, is stopped from being transported in the first transport path 11. At this time, if only the reading process or the sorting process of the second sheet P2 is performed, the CPU 200 continues the reading process or the sorting process, and then the second sheet P2, which is a subsequent sheet, is sent to the paper discharge unit 23. Discharge. If the second paper P2 is subjected to processing other than reading processing or sorting processing, the second paper P2, which is the subsequent paper, is discharged to the paper discharge unit 23 without being processed.

  After discharging the second sheet P2, the CPU 200 causes the first sheet P1 that has jammed to be conveyed in the direction opposite to the conveying direction by reversing the conveying rollers 16d, 16e, and 16f, and the second conveying path. 12 is transported to the first transport path 11 and temporarily stopped. Further, the CPU 200 causes the first paper P1 transported to the first transport path 11 to be transported in the forward direction by causing the transport rollers 16a, 16b, 16c, and 16j to rotate in the forward direction, and causes the first paper jam to occur. The paper P1 is discharged to the paper discharge unit 23.

  The order of conveyance is not limited to this, and the first paper P1 may be discharged to the paper discharge unit 23 first, and then the second paper P2 may be discharged to the paper discharge unit 23.

  Next, a case where a jam occurs in the erasing unit 15 in the second sheet P2 that is a subsequent sheet will be described. FIG. 15 is a diagram illustrating a state in which the second paper P2 is jammed in the erasing unit 15 and the first paper P1, which is the preceding paper, is stopped from being transported in the first transport path 11. At this time, since the paper P1 has already been subjected to the erasing process by the erasing unit 15, the reading process or the sorting process, which is the subsequent process, is performed as it is, and the sheet P1 is discharged to the paper discharge unit 23.

  After discharging the first paper P1, the CPU 200 causes the second paper P2 that has jammed to be transported in the direction opposite to the transport direction by reversing the transport rollers 16d, 16e, and 16f. 12 is transported to the first transport path 11 and temporarily stopped. Furthermore, the CPU 200 causes the second paper P2 conveyed to the first conveyance path 11 to be conveyed in the forward direction by causing the conveyance rollers 16a, 16b, 16c, and 16j to rotate in the forward direction, and causes the second paper P2 that has jammed. The paper P2 is discharged to the paper discharge unit 23.

  The order of conveyance is not limited to this, and the second paper P2 may be discharged to the paper discharge unit 23 first, and then the first paper P1 may be discharged to the paper discharge unit 23.

  If the paper P1 subjected to the erasing process causes a jam in the erasing unit 116 and the paper P2 stays in the erasing unit 116, there is a possibility that the paper P12 may be scorched. The erasing apparatus 100 can be safely stopped.

  The erasing apparatus 100 as described above can improve the operability because the processing of the paper that does not cause the jam is continued. In addition, even when the paper P exists in the erasing unit 15 when a jam occurs, the erasing apparatus 100 can be safely stopped by causing the paper discharge unit 23 to discharge the paper on which the jam has occurred.

  Although several embodiments have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the gist of the invention, and in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 Paper feed part 11 1st conveyance path 12 2nd conveyance path 13 1st reading part 14 2nd reading part 15 Decoloring part 16 Conveyance roller 17 Path | route change part 19 1st paper discharge part 20 2nd Paper discharge unit 22 Paper feed tray 23 Paper discharge unit 100 Erasing device 101 Client PC
102 server 200 CPU
202 ROM
203 RAM
205 Heater 210 Operation Unit 211 Display Unit 212 Paper Detection Sensor 213 Temperature Detection Unit

Claims (12)

A paper feed unit for feeding a recording medium;
A paper discharge unit for discharging the recording medium;
A first transport path from the paper feed unit to the paper discharge unit;
A reading unit that is arranged in the first conveyance path and reads an image recorded on the recording medium;
A second conveyance path that branches from the reading unit in the conveyance direction downstream of the reading unit and joins the recording medium in the conveyance direction upstream of the first conveyance path;
A decoloring unit disposed in the second conveyance path and decolorizing the color of the image of the recording medium by heating in contact with the recording medium;
A transport unit that transports the recording medium along the first and second transport paths;
A sensor for detecting a recording medium conveyed by the conveying unit;
A control unit that controls to convey the recording medium existing in the first or second conveyance path when the occurrence of the jam of the recording medium is detected by the sensor;
A decoloring device comprising: 2. The control unit according to claim 1, wherein when the occurrence of a jam of the recording medium in the second conveyance path is detected by the sensor, the control unit continues processing of the recording medium existing in the first conveyance path. Erasing device. When the control unit detects the occurrence of a jam of the recording medium in the second transport path by the sensor, the control unit continues the processing of the recording medium existing downstream from the jam position in the second transport path. The decoloring apparatus according to claim 1. When the control unit detects the occurrence of a jam by the subsequent second recording medium in the paper feeding unit after the paper feeding unit feeds the first recording medium to the first conveyance path, The erasing apparatus according to claim 1, wherein the processing of one recording medium is continued . The decoloring apparatus according to claim 2, wherein the process includes a decoloring process performed by the decoloring unit. The erasing apparatus according to claim 2, wherein the process includes a reading process by the reading unit. The erasing apparatus according to claim 2, wherein the process includes a sorting process by the reading unit . The erasing apparatus according to any one of claims 1 to 7 , wherein the control unit controls a conveyance direction in accordance with a state of a recording medium that can be conveyed when a jam occurs . The erasing apparatus according to any one of claims 1 to 7 , wherein the control unit controls a transport direction in which the paper is transported according to a state of a recording medium that causes a jam . The erasing apparatus according to claim 1, wherein the control unit discharges a transportable recording medium to the paper discharge unit when a jam occurs . The decoloring apparatus according to claim 1, further comprising a display unit that displays the occurrence of a jam . The recording medium is fed by the paper feed unit,
An image recorded on the recording medium is read by a reading unit disposed in a first conveyance path from the paper feeding unit to a paper discharging unit that discharges the recording medium,
The recording medium branches along the first transport path and the second transport path that branches from the reading unit downstream in the transport direction of the recording medium and merges upstream of the first transport path in the transport direction of the recording medium. Transport the
The color of the image of the recording medium is erased by heating in contact with the recording medium by the color erasing unit arranged in the second conveyance path,
The recording medium is detected by a sensor,
A recording medium conveyance control method for controlling to convey a recording medium existing in the first or second conveyance path when a jam of the recording medium occurs.

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