Patent Application
20240025683
The present invention relates to a sheet conveying device provided with a mechanism for correcting deviation of sheets in a width direction and an image forming apparatus provided with the same.
In an image forming apparatus, the positions of sheets that are being conveyed by a sheet conveying device may be shifted in the width direction of the sheets.
In addition, the sheet conveying device is known to be provided with a sheet correction mechanism for correcting the positions of the sheets in the width direction (for example, see PTL 1).
[PTL 1] Japanese Patent Application Publication No. 2018-95466
In a case where the conveyance path of the sheets downstream of the sheet correction mechanism is long, the positions of the sheets in the width direction may be shifted again before the sheets are discharged to a discharge tray.
An object of the present invention is to provide a sheet conveying device capable of correcting the deviation of a sheet in the width direction occurring on a conveyance path of the sheet from a sheet correction mechanism to a discharge tray and to provide an image forming apparatus provided with the sheet conveying device.
A sheet conveying device according to an aspect of the present invention is provided with a sheet conveying portion, a sheet discharge portion, a sheet shift portion, a conveying position detecting portion, a discharge position detecting portion, and a control portion. The sheet conveying portion conveys a sheet along a conveyance path. The sheet discharge portion is disposed downstream of the sheet conveying portion in a sheet conveying direction and discharges the sheet from a discharge port to a discharge tray. The sheet shift portion is disposed on the conveyance path and moves the sheet in a width direction orthogonal to the sheet conveying direction. The conveying position detecting portion detects the position of the sheet in the width direction on the conveyance path. The discharge position detecting portion detects a discharge position of the sheet, in the width direction, discharged onto the discharge tray in the sheet discharge portion. The control portion controls the conveyance of the sheet. The control portion derives an amount of deviation between the discharge position of the sheet and a discharge reference position serving as a reference in the width direction in the sheet discharge portion based on a detection result of the discharge position detecting portion and controls the sheet shift portion according to the amount of deviation to correct a conveying position of the sheet in the sheet conveying portion.
An image forming apparatus according to another aspect of the present invention is provided with a printing device that forms an image on a sheet and the sheet conveying device that conveys the sheet on which the image is formed.
The present invention can provide the sheet conveying device capable of correcting the deviation of the sheet in the width direction occurring on the conveyance path of the sheet from the sheet correction mechanism to the discharge tray and can provide the image forming apparatus provided with the sheet conveying device.
The following describes an embodiment of the present invention with reference to the accompanying drawings. It should be noted that the following embodiment is an example of a specific embodiment of the present invention and should not limit the technical scope of the present invention.
[Configuration of Image Forming Apparatus 10]
As shown in
In the present embodiment, the sheet conveying device 6 is composed of part of the printing device 1, part of the relay conveying device 2, and part of the post-processing device 3.
As shown in
A primary conveyance path 1x is formed inside the printing device 1, a secondary conveyance path 2x is formed inside the relay conveying device 2, and a tertiary conveyance path 3x is formed inside the post-processing device 3. The primary conveyance path 1x, the secondary conveyance path 2x, and the tertiary conveyance path 3x are paths on which sheets 9 are conveyed.
The printing device 1 is provided with a sheet storing portion 11, a primary conveying mechanism 12, and a printing portion 13. The primary conveying mechanism 12 feeds the sheets 9 housed in the sheet storing portion 11 to the primary conveyance path 1x one by one and conveys the sheets 9 along the primary conveyance path 1x.
The printing portion 13 executes a printing process of forming images on the sheets 9 conveyed along the primary conveyance path 1x. The printing portion 13 shown in
The primary conveying mechanism 12 feeds the sheets 9 after image formation from the primary conveyance path 1x to the secondary conveyance path 2x inside the relay conveying device 2.
The relay conveying device 2 transfers the sheets 9 after the image formation delivered from the printing device 1 to the post-processing device 3. The relay conveying device 2 is provided with a secondary conveying mechanism 21 and one or more sheet correction mechanisms 4. In the example shown in
The secondary conveying mechanism 21 conveys the sheets 9 delivered from the printing device 1 along the secondary conveyance path 2x and feeds the sheets 9 to the post-processing device 3. The secondary conveying mechanism 21 can execute a forward conveyance process of feeding the sheets 9 to the post-processing device 3 with the orientation of the sheets 9 delivered from the printing device 1 unchanged and a reverse conveyance process of feeding the sheets 9 to the post-processing device 3 with the orientation of the sheets 9 delivered from the printing device 1 reversed. The secondary conveying mechanism 21 is an example of a sheet conveying portion.
In
In addition, the relay conveying device 2 is provided with an intermediate discharge tray 20. The secondary conveying mechanism 21 can also execute an intermediate discharge process of discharging the sheets 9 delivered from the printing device 1 to the intermediate discharge tray 20. In
In the description below, a horizontal direction orthogonal to a conveying direction of the sheets 9 in the primary conveyance path 1x, the secondary conveyance path 2x, and the tertiary conveyance path 3x is referred to as “first direction D1”, and a horizontal direction orthogonal to the first direction D1 is referred to as “second direction D2”.
The first direction D1 corresponds to the width direction of the sheets 9 conveyed along the primary conveyance path 1x, the secondary conveyance path 2x, and the tertiary conveyance path 3x. In the present embodiment, the front-rear direction of the image forming apparatus 10 corresponds to the first direction D1. Similarly, the left-right direction of the image forming apparatus 10 corresponds to the second direction D2.
The sheet correction mechanisms 4 are disposed at certain points on the secondary conveyance path 2x. The sheet correction mechanisms 4 move the sheets 9 in the first direction D1.
In the image forming apparatus 10, the positions of the sheets 9 in the first direction D1 may be shifted while the primary conveying mechanism 12, the secondary conveying mechanism 21, and the post-processing device 3 convey the sheets 9. The sheet correction mechanisms 4 correct the deviation of the sheets 9 in the first direction D1.
The secondary conveyance path 2x includes multiple parallel conveyance paths 20x extending in parallel from a branch point 2y to a merge point 2z. The secondary conveying mechanism 21 is provided with a route switching mechanism 210 for selectively guiding the sheets 9 that have reached the branch point 2y to one of the multiple parallel conveyance paths 20x.
When a continuous printing process is executed, the route switching mechanism 210 guides multiple sheets 9 sequentially conveyed to the branch point 2y to the multiple parallel conveyance paths 20x in a predetermined order. In the continuous printing process, the printing process is continuously executed on the multiple sheets 9.
In the example shown in
The two sheet correction mechanisms 4 are respectively disposed on the two parallel conveyance paths 20x at the certain points on the secondary conveyance path 2x. In the continuous printing process, the route switching mechanism 210 guides the sheets 9 that have reached the branch point 2y alternately to the two parallel conveyance paths 20x.
Accordingly, the sheets 9 can be conveyed to one of the sheet correction mechanisms 4 without waiting for the other sheet correction mechanism 4 to finish performing the process on the preceding sheets 9. This prevents a reduction in efficiency in conveying the sheets 9 in the continuous printing process.
The post-processing device 3 is provided with a tertiary conveying mechanism 31, one or more sheet finishing mechanisms 32, and one or more discharge trays 33. The tertiary conveying mechanism 31 conveys the sheets 9 delivered from the relay conveying device 2 along the tertiary conveyance path 3x and discharges the sheets 9 conveyed through the sheet finishing mechanisms 32 from discharge ports 30 to the discharge trays 33. The discharge ports 30 correspond to exits of the tertiary conveyance path 3x. The tertiary conveying mechanism 31 is an example of a sheet discharge portion disposed downstream of the secondary conveying mechanism 21. The discharge ports 30 are formed in the housing of the post-processing device 3 that includes the tertiary conveying mechanism 31.
In the present embodiment, the primary conveying mechanism 12, the secondary conveying mechanism 21, and the tertiary conveying mechanism 31 respectively convey the sheets 9 along the primary conveyance path 1x, the secondary conveyance path 2x, and the tertiary conveyance path 3x; and constitute a conveying mechanism 12, 21, 31 that discharges the sheets 9 from the tertiary conveyance path 3x to the discharge trays 33. In addition, the conveying mechanism 12, 21, 31, the sheet correction mechanisms 4, and a discharged sheet alignment mechanism 5 constitute the sheet conveying device 6.
In the example shown in
The post-processing device 3 is further provided with the discharged sheet alignment mechanism 5. The discharged sheet alignment mechanism 5 aligns the positions of the sheets 9, in the first direction D1, discharged onto the discharge trays 33 with a predetermined reference position.
As shown in
The CPU 81 is a processor that executes computer programs to execute various types of data processing and control. The RAM 82 is a computer-readable volatile storage device. The RAM 82 primarily stores the computer programs executed by the CPU 81 and data that is output or consulted by the CPU 81 during execution of various types of processing.
The secondary storage device 83 is a computer-readable nonvolatile storage device. The secondary storage device 83 can store and update the computer programs and various types of data. For example, either a flash memory or a hard disk drive, or both, may be used as the secondary storage device 83.
The signal interface 84 converts signals output by various types of sensors into digital data and transmits the converted digital data to the CPU 81. Furthermore, the signal interface 84 converts control commands output by the CPU 81 into control signals and transmits the control signals to components to be controlled.
The CPU 81 includes multiple processing modules that are implemented when the computer programs are executed. The processing modules include a main control portion 8a, a conveyance control portion 8b, a printing control portion 8c, and a post-processing portion 8d.
The main control portion 8a executes, for example, control that causes various types of processing to be started in response to operations on an operation portion (not shown) and control that causes a display portion (not shown) to display information.
The conveyance control portion 8b controls the sheet conveying device 6. The printing control portion 8c causes the printing portion 13 to execute the printing process in synchronization with the conveyance of the sheets 9 by the primary conveying mechanism 12. The post-processing portion 8d controls the sheet finishing mechanisms 32.
As shown in
The pairs of registration rollers 41 are rotatably supported by the roller support portion 43. The roller drive mechanism 42 rotationally drives the pairs of registration rollers 41. The pairs of registration rollers 41 rotate while holding a sheet 9 in between to convey the sheet 9. The conveyance control portion 8b controls the roller drive mechanism 42 to rotate and stop the pairs of registration rollers 41.
The roller support portion 43 supports the pairs of registration rollers 41 and the roller drive mechanism 42 while being supported to be movable in the first direction D1. The roller support portion 43 also serves as a sheet guide that partially forms the secondary conveyance path 2x.
The first shift drive portion 44 is a mechanism for moving the roller support portion 43 in the first direction D1. The roller support portion 43 and the first shift drive portion 44 are examples of a roller shift portion that moves the pairs of registration rollers 41 in the first direction D1. In addition, the pairs of registration rollers 41, the roller support portion 43, and the first shift drive portion 44 are examples of a sheet shift portion that moves the sheet 9 in the first direction D1.
The conveyance control portion 8b controls the first shift drive portion 44 to adjust the position of the sheet 9, in the first direction D1, held by the pairs of registration rollers 41.
The sheet detection sensor 45 detects the sheet 9 held by the pairs of registration rollers 41. For example, a reflective optical sensor or the like is used as the sheet detection sensor 45.
The sensor support portion 46 supports the sheet detection sensor 45 while being supported to be movable in the first direction D1. The second shift drive portion 47 is a mechanism for moving the sensor support portion 46 in the first direction D1. The sensor support portion 46 and the second shift drive portion 47 are examples of a sensor shift portion. The conveyance control portion 8b controls the second shift drive portion 47 to adjust the position of the sheet detection sensor 45 in the first direction D1.
The conveyance control portion 8b controls the roller drive mechanism 42, the first shift drive portion 44, and the second shift drive portion 47. The sheet correction mechanism 4 corrects the skew of the sheet 9 that has reached the sheet correction mechanism 4 and moves the sheet 9 to a reference conveying position in the first direction D1 according to the control by the conveyance control portion 8b. The reference conveying position is a position in the first direction D1 set in advance according to the size of the sheet 9.
Specifically, the conveyance control portion 8b stops the rotation of the pairs of registration rollers 41 before the sheet 9 reaches the sheet correction mechanism 4. This causes the leading edge of the sheet 9 that has reached the sheet correction mechanism 4 to abut on the pairs of registration rollers 41. Thus, the pairs of registration rollers 41 correct the skew of the sheet 9 that is brought into contact with the pairs of registration rollers 41 while the rotation of the pairs of registration rollers 41 is stopped.
Furthermore, the conveyance control portion 8b temporarily rotates the pairs of registration rollers 41 and then stops the rotation. Specifically, the conveyance control portion 8b temporarily rotates the pairs of registration rollers 41 until the leading edge of the sheet 9 reaches a predetermined adjustment position P01, and then stops the rotation. Thus, the pairs of registration rollers 41 hold the sheet 9 with the leading edge of the sheet 9 located at the adjustment position P01.
The adjustment position P01 is a position downstream of the pairs of registration rollers 41 in the sheet conveying direction. When the leading edge of the sheet 9 is located at the adjustment position P01, the sheet detection sensor 45 can detect the sheet 9 at any position in the first direction D1.
For example, a sheet sensor (not shown) detects that the sheet 9 has reached a predetermined position upstream of the pairs of registration rollers 41 in the sheet conveying direction. The conveyance control portion 8b temporarily rotates the pairs of registration rollers 41 from a standstill for a predetermined period of time after a predetermined period of time has passed since the detection of the sheet 9 by the sheet sensor. This causes the sheet 9 to stop with the leading edge located at the adjustment position P01.
In addition, the sheet detection sensor 45 of the sheet correction mechanism 4 may also serve as a sensor that detects that the leading edge of the sheet 9 has reached the adjustment position P01. In this case, the conveyance control portion 8b shifts the sheet detection sensor 45 in advance to a waiting position P02 in the first direction D1 before the sheet 9 reaches the pairs of registration rollers 41.
The sheet detection sensor 45 disposed at the waiting position P02 can detect a sheet 9 with any anticipated width when the sheet 9 reaches the adjustment position P01.
The conveyance control portion 8b stops the pairs of registration rollers 41 when the sheet detection sensor 45 disposed at the waiting position P02 detects the sheet 9. This causes the sheet 9 to stop with the leading edge located at the adjustment position P01.
Moreover, the conveyance control portion 8b controls the second shift drive portion 47 to move the sheet detection sensor 45 to a target edge position P1 corresponding to the reference conveying position of the sheet 9. Furthermore, the conveyance control portion 8b controls the first shift drive portion 44 to move the pairs of registration rollers 41 from the starting point to the ending point, in the first direction D1, set in advance.
For example, the starting point corresponds to the position of one end of a movable range of the pairs of registration rollers 41 in the first direction D1, whereas the ending point corresponds to the position of another end of the movable range.
While moving the pairs of registration rollers 41 in the first direction D1, the conveyance control portion 8b stops the movement of the pairs of registration rollers 41 when the detection result of the sheet detection sensor 45 indicates an edge detection change set in advance.
The sheet detection sensor 45 detects the sheet 9 while the roller support portion 43 and the first shift drive portion 44 move the pairs of registration rollers 41 to detect the position of the sheet 9 in the first direction D1. The sheet detection sensor 45, the sensor support portion 46, and the second shift drive portion 47 are examples of a conveying position detecting portion that detects the position of the sheet 9 in the first direction D1 on the secondary conveyance path 2x. The sheet correction mechanism 4 corrects the conveying position of the sheet 9 in the first direction D1 to the predetermined reference conveying position.
In a case where the direction from the starting point to the ending point corresponds to a direction in which the sheet 9 approaches the target edge position P1, the edge detection change corresponds to a change from a state where the sheet 9 is not detected by the sheet detection sensor 45 to a state where the sheet 9 is detected.
In a case where the direction from the starting point to the ending point corresponds to a direction in which the sheet 9 moves away from the target edge position P1, the edge detection change corresponds to a change from the state where the sheet 9 is detected by the sheet detection sensor 45 to the state where the sheet 9 is not detected.
The position of the sheet 9 in the first direction D1 is adjusted to the reference conveying position by stopping the movement of the pairs of registration rollers 41 when the detection result of the sheet detection sensor 45 indicates the edge detection change. Subsequently, the pairs of registration rollers 41 rotate according to the control by the conveyance control portion 8b to convey the sheet 9 downstream.
It is noted that the secondary conveying mechanism 21 is provided with pairs of upstream rollers (not shown) disposed upstream of the pairs of registration rollers 41 in the sheet conveying direction. Both the pairs of registration rollers 41 and the pairs of upstream rollers may hold the sheet 9 in between while the leading edge of the sheet 9 is located at the adjustment position P01.
In this case, the secondary conveying mechanism 21 is provided with a roller separating mechanism for separating the pairs of upstream rollers from the sheet 9. The conveyance control portion 8b controls the roller separating mechanism to separate the pairs of upstream rollers from the sheet 9 before moving the pairs of registration rollers 41 in the first direction D1. Furthermore, the conveyance control portion 8b controls the roller separating mechanism to bring the pairs of upstream rollers into contact with the sheet 9 when the adjustment of position of the sheet 9 in the first direction D1 is finished.
As shown in
The pair of paper cursors 51 are supported by a frame of the post-processing device 3. The pair of paper cursors 51 are supported on the discharge tray 33 to be movable in the first direction D1 inward to be closer to each other and outward to be separated from each other.
When a sheet 9 is discharged to the discharge tray 33, the cursor moving mechanism 52 moves the pair of paper cursors 51 from a retraction position P3 to a discharge reference position P2. The discharge reference position P2 corresponds to a sheet width set in advance, and the retraction position P3 is located outside the discharge reference position P2.
The pair of paper cursors 51 align the sheet at the discharge reference position P2 by moving from both sides of the sheet 9 on the discharge tray 33 to the discharge reference position P2. The discharge reference position P2 is a position serving as a reference in the first direction D1 in the sheet discharge portion 31.
In the present embodiment, the cursor moving mechanism 52 is provided with a pair of rack gears 52a respectively connected to the pair of paper cursors 51 and a pinion gear 52b meshing with the pair of rack gears 52a. The pair of rack gears 52a and the pinion gear 52b constitute a rack and pinion mechanism.
Furthermore, the cursor moving mechanism 52 is provided with a gear drive motor 52c that rotationally drives the pinion gear 52b. The conveyance control portion 8b of the control device 8 controls the rotation direction of the gear drive motor 52c to move the pair of paper cursors 51 inward or outward.
The conveyance control portion 8b of the control device 8 sets the discharge reference position P2 corresponding to the sheet width set in advance. Furthermore, when the sheet 9 is discharged to the discharge tray 33, the conveyance control portion 8b controls the gear drive motor 52c to move the pair of paper cursors 51 from the retraction position P3 to the discharge reference position P2 and, furthermore, from the discharge reference position P2 to the retraction position P3.
The control over the movement of the pair of paper cursors 51 by the conveyance control portion 8b causes the pair of paper cursors 51 that move to the discharge reference position P2 to align the sheet 9 on the discharge tray 33 with an appropriate position. It is noted that the retraction position P3 is a position outside the discharge reference position P2.
In a case where the conveyance path of the sheet 9 downstream of the sheet correction mechanism 4 is long, the position of the sheet 9 in the first direction D1 may be shifted again before the sheet 9 is discharged to the discharge tray 33.
In a case where the deviation of the sheet 9 in the first direction D1 when the sheet 9 is discharged onto the discharge tray 33 is too large, the sheet 9 may be discharged onto one of the pair of paper cursors 51. In this case, the discharged sheet alignment mechanism 5 cannot align the sheet 9 with the reference position.
The sheet conveying device 6 is provided with a configuration capable of correcting the deviation of the sheet 9 in the first direction D1 occurring on the conveyance path of the sheet 9 between the sheet correction mechanism 4 and the discharge tray 33. The following describes the configuration.
In the present embodiment, the discharged sheet alignment mechanism 5 is further provided with a pair of cursor contact sensors 54 (see
For example, the pair of cursor contact sensors 54 may be pressure sensors. The pressure sensors may be, for example, strain sensors. The pressure sensors detect pressure the respective paper cursors 51 receive from the sheet 9.
When the pair of paper cursors 51 move from the retraction position P3 to the discharge reference position P2 and are brought into contact with the respective side edges of the sheet 9, the cursor contact sensors 54 detect pressure applied to the paper cursors 51 by the sheet 9. Accordingly, detection of pressure exceeding a predetermined reference pressure by the cursor contact sensors 54 indicates that the paper cursors 51 are brought into contact with the side edges of the sheet 9 on the discharge tray 33.
In the description below, the amount of deviation of the sheet 9 discharged onto the discharge tray 33 from the reference position in the first direction D1 is referred to as “amount of discharge deviation”. The main control portion 8a executes a discharge deviation derivation process of deriving the amount of discharge deviation.
In the discharge deviation derivation process, the main control portion 8a derives the amount of discharge deviation according to a timing when one of the pair of cursor contact sensors 54 detects the contact between one of the pair of paper cursors 51 and the side edge of the sheet 9 earlier than the other cursor contact sensor 54 while the pair of paper cursors 51 move from the retraction position P3 to the discharge reference position P2.
Specifically, the main control portion 8a measures time from when the pair of paper cursors 51 start to move from the retraction position P3 to the discharge reference position P2 to when the contact between one of the pair of paper cursors 51 and the corresponding side edge of the sheet 9 is first detected by one of the pair of cursor contact sensors 54 as a position determination time. The position determination time indicates the position of the sheet 9, in the first direction D1, discharged onto the discharge tray 33. The position will be referred to as “discharge position” below. The position determination time is an example of a detection time. The main control portion 8a that measures the position determination time is an example of a measurement portion.
The main control portion 8a derives the amount of discharge deviation according to the difference between the position determination time and a predetermined reference time corresponding to the discharge reference position P2. The reference time is a time required for the pair of paper cursors 51 to move from the retraction position P3 to the discharge reference position P2.
The main control portion 8a applies the difference between the position determination time and the reference time to a predetermined conversion formula or a conversion table to derive the amount of discharge deviation. The amount of discharge deviation is the amount of deviation of the sheet 9 in the first direction D1 occurring when the sheet 9 is conveyed from the sheet correction mechanism 4 to the discharge tray 33.
In addition, the amount of discharge deviation includes information about a shift direction of the sheet 9 relative to the reference position. Specifically, the shift direction is determined by which of the pair of cursor contact sensors 54 detects the contact between the paper cursors 51 and the side edges of the sheet 9 first.
It is noted that the pair of cursor contact sensors 54 and the main control portion 8a that measures the position determination time are examples of a discharge position detecting portion that detects the discharge position of the sheet 9.
On the other hand, the conveyance control portion 8b corrects the target edge position P1 in the sheet correction mechanism 4 according to the amount of discharge deviation derived in the discharge deviation derivation process. Correcting the target edge position P1 means correcting the reference conveying position of the sheet 9 in the sheet correction mechanism 4. When the reference conveying position is corrected, the conveyance control portion 8b controls the sheet correction mechanism 4 according to the reference conveying position after correction. Thus, the conveyance control portion 8b corrects the conveying position of the sheet 9 in the secondary conveying mechanism 21.
Specifically, the conveyance control portion 8b corrects the target edge position P1 in a direction opposite the shift direction indicated by the amount of discharge deviation by a distance corresponding to the amount of discharge deviation. Thus, the target edge position P1 is corrected such that the amount of discharge deviation approaches zero.
In the present embodiment, the main control portion 8a that executes the discharge deviation derivation process and the conveyance control portion 8b that controls the sheet correction mechanisms 4 constitute part of the sheet conveying device 6. Controlling the sheet correction mechanisms 4 is an example of controlling the conveyance of the sheets 9.
The adoption of the sheet conveying device 6 enables the correction of the deviation of the sheets 9 in the first direction D1 occurring on the conveyance paths of the sheets 9 between the sheet correction mechanisms 4 and the discharge tray 33.
In the sheet conveying device 6, a line sensor of the CIS (Contact Image Sensor) type disposed at the discharge port of the tertiary conveyance path 3x so as to extend in the first direction D1 may be used as the discharge deviation detection portion that detects the amount of discharge deviation.
The line sensor detects the positions of the side edges of the sheets 9 discharged from the tertiary conveyance path 3x. In the present application example, in the discharge deviation derivation process, the main control portion 8a derives the amount of discharge deviation according to the difference between predetermined reference edge positions corresponding to the width of the sheets 9 set in advance and the positions of the side edges of the sheets 9 detected by the line sensor.
As shown in
That is, the conveyance control portion 8b selects the destination of the sheets 9 from the multiple discharge trays 33. Furthermore, the conveyance control portion 8b causes the tertiary conveying mechanism 31 to execute a process of discharging the sheets 9 to the selected destination.
Multiple pairs of cursor contact sensors 54 may be provided so as to correspond to the multiple discharge trays 33. That is, the post-processing device 3 is provided with multiple pairs of cursor contact sensors 54 corresponding to the multiple discharge trays 33. In this case, the main control portion 8a measures the position determination time for the pair of cursor contact sensors 54 corresponding to the destination of the sheets 9 among the multiple discharge trays 33.
Furthermore, the main control portion 8a corrects the reference conveying position according to the detection result of the pair of cursor contact sensors 54 corresponding to the destination of the sheets 9 among the multiple discharge trays 33. That is, the main control portion 8a and the conveyance control portion 8b correct the conveying position of the sheets 9 according to the detection result of one of the multiple pairs of cursor contact sensors 54 corresponding to the selected destination. These application examples may be adopted by the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2020-142287 | Aug 2020 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2021/024746 | 6/30/2021 | WO |
