JP2015020813A - Post-processing device, image formation device and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a post-processing device, an image formation device and a program capable of preventing a defect, such as curled-up storage and a remaining bank, from occurring in a record medium ejected to an ejected record medium storage part.SOLUTION: The post-processing device ejects a record medium to an ejected record medium storage part by moving the ejected record medium storage part to a first position above a standby position, retracts a pressing member while moving the ejected record medium storage part to a second position lower than the standby position before the record medium is stored in the ejected record medium storage part, and regulates so as to make the pressing member press the record medium after the record medium is stored in the ejected record medium storage part.

Description

  The present invention relates to a post-processing apparatus, an image forming apparatus, and a program.

  Japanese Patent Application Laid-Open No. 2005-228867 discloses a stipple unit for receiving paper discharged from an image forming apparatus in a stipple tray and subjecting the end portion thereof to a stipple process, and a paper bundle stipulated by the stipple unit. In a paper post-processing apparatus, comprising: a discharge unit that discharges to the outside; a discharge tray that receives and stacks the discharged sheet bundle; and a drive unit that drives the discharge tray in the vertical direction. The top surface of the paper already stacked on the paper output tray hangs down when the leading end of the stapled paper stack to be output next comes out, so that it is in an upper position sufficient to avoid the folded stack state caused by the downward curl. Disclosed is a sheet post-processing apparatus.

  Japanese Patent Application Laid-Open No. 2003-228561 discloses a paper supply unit for supplying paper, a photosensitive drum for forming a toner image of an image to be imaged, and a supply from the paper supply unit for transferring the toner image onto the paper. A transfer unit that presses the sheet to be pressed against the photosensitive drum, a fixing unit that heats the sheet conveyed from the transfer unit in order to melt and fix the toner image transferred to the sheet, and the fixing unit. A discharge means for discharging the heated paper to the paper discharge tray, a lifting / lowering means for moving the paper discharge tray up and down, a paper detection means for detecting the size of the paper on which the image is formed, and a paper detection means. Paper discharge tray adjusting means for moving the paper discharge tray up and down by the elevating means based on the size of the paper, and the height of the paper discharge tray can be adjusted in multiple stages. It discloses an image forming apparatus.

Japanese Patent Application Laid-Open No. 2003-228867 detects a sheet discharge unit that discharges a bound sheet bundle, a sheet discharge tray that can move up and down in which the sheet bundle discharged from the sheet discharge unit is accommodated, and a paper surface position of the sheet discharge tray. In the paper stacking apparatus having a paper surface position detecting means for controlling and a control means for controlling the paper discharge tray based on detection information of the paper surface position detecting means, the control means includes the discharge position of the paper discharge means and the paper discharge position. Disclosed is a paper stacking device that performs control to increase a discharge drop with respect to a paper surface position of a tray when the number of sheets bundled is reduced.

JP-A-10-291723 JP 2013-047824 A JP 2009-062198

  An object of the present invention is to provide a post-processing device, an image forming apparatus, and a program that can prevent problems such as curling accommodation and bank residue on a recording medium discharged to a discharge recording medium storage portion. .

  The present invention according to claim 1 is a post-processing apparatus main body that performs post-processing on a recording medium, a discharge recording medium storage unit that stores a recording medium that has been post-processed by the post-processing apparatus main body and discharged from a discharge port, Driving means for driving the discharged recording medium accommodating portion in the vertical direction; a pressing member for pressing a part of the recording medium accommodated in the discharged recording medium accommodating portion; and a control means for controlling the driving means and the pressing member. And the control means moves the discharged recording medium accommodating portion to a first position above a standby position, discharges the recording medium to the discharged recording medium accommodating portion, and is accommodated in the discharged recording medium accommodating portion. Before moving the ejected recording medium accommodating portion to a second position lower than the standby position and retracting the pressing member, and after the recording medium is accommodated in the ejected recording medium accommodating portion, the recording medium is Controlled so as to press the a post-processing apparatus.

  The present invention according to claim 2 is the post-processing device according to claim 1, wherein the post-processing device main body is a needle-binding device that staples a plurality of recording media on the non-discharge side.

  The present invention according to claim 3 is the post-processing device according to claim 2, wherein the pressing member presses a side that is stapled by the needle binding device.

According to a fourth aspect of the present invention, the pressing member is provided with a buffer member on a side pressing the recording medium, and the buffer member hits the recording medium at a contact surface of the buffer member in the standby position, The post-processing apparatus according to claim 1, wherein the post-processing apparatus hits at a corner of the buffer member in the first position.

According to a fifth aspect of the present invention, the control means moves the discharged recording medium accommodating portion to a first position above the standby position in accordance with a stacking state of the bundle of recording media in the discharged recording medium accommodating portion. Without being moved into the ejected recording medium accommodating portion, the ejected recording medium accommodating portion is moved to a second position lower than the standby position and the pressing member is retracted to record in the ejected recording medium accommodating portion. 5. The post-processing apparatus according to claim 1, wherein the recording medium is controlled to be pressed by the pressing member after the medium is accommodated.

  The present invention according to claim 6 includes: an image forming unit that forms an image on a recording medium; and a post-processing device that performs post-processing on the recording medium on which the image is formed by the image forming unit. The processing apparatus includes a post-processing apparatus main body that performs post-processing on the recording medium, a discharge recording medium storage unit that stores the recording medium that has been post-processed by the post-processing apparatus main body and discharged from the discharge port, and the discharge recording medium storage Drive means for driving the part in the vertical direction, a pressing member for pressing a part of the recording medium accommodated in the discharged recording medium accommodating part, and a control means for controlling the driving means and the pressing member, The control means moves the ejected recording medium accommodating portion to a first position above a standby position to eject the recording medium to the ejected recording medium accommodating portion, and before being accommodated in the ejected recording medium accommodating portion, Eject recording medium storage The image forming is controlled to move to a second position lower than the machine position, retract the pressing member, and press the recording medium by the pressing member after the recording medium is accommodated in the discharge recording medium accommodating portion. Device.

  According to a seventh aspect of the present invention, there is provided a step of moving the discharged recording medium storage unit to a first position above a standby position to discharge the recording medium to the discharged recording medium storage unit; Moving the ejected recording medium accommodating portion to a second position lower than the standby position and retracting the pressing member before being accommodated; and the pressing member after the recording medium is accommodated in the ejected recording medium accommodating portion Is a program that causes the computer to execute the step of pressing the recording medium.

  According to the first aspect of the present invention, it is possible to provide a post-processing apparatus capable of preventing problems such as curling accommodation and bank residue on the recording medium discharged to the discharge recording medium storage portion.

  According to the second aspect of the present invention, in addition to the effect of the first aspect, the present invention can be applied to a stapled recording medium.

  According to the third aspect of the present invention, in addition to the effect of the present invention according to the first or second aspect, there is less disturbance on the side where the staples are bound in the recording medium than in the case where the configuration of the present invention is not provided. can do.

  According to the fourth aspect of the present invention, in addition to the effect of the present invention according to any one of the first to third aspects, the life of the buffer member can be extended as compared with the case where the configuration of the present invention is not provided.

  According to the fifth aspect of the present invention, in addition to the effect of the present invention according to the fourth to fourth aspects, problems such as blocking the discharge port can be prevented.

  According to the sixth aspect of the present invention, it is possible to provide an image forming apparatus capable of preventing problems such as curling accommodation and bank residue on the recording medium discharged to the discharged recording medium storage portion.

  According to the seventh aspect of the present invention, it is possible to provide a program capable of preventing problems such as curling accommodation and bank residue on the recording medium ejected to the ejection recording medium accommodating portion.

1 is a schematic diagram illustrating an image forming apparatus according to an embodiment of the present invention. It is a top view which shows the post-processing apparatus unit used for embodiment of this invention. It is a perspective view which shows the post-processing apparatus which concerns on embodiment of this invention. FIG. 5 is a side view showing the periphery of the discharged recording medium storage unit used in the embodiment of the present invention, and the discharged recording medium storage unit in a standby position. FIG. 6 is a side view showing the periphery of the discharged recording medium accommodating portion used in the embodiment of the present invention, and the discharged recording medium accommodating portion being in a first position. FIG. 6 is a side view showing the periphery of the discharged recording medium accommodating portion used in the embodiment of the present invention, and the discharged recording medium accommodating portion being in a second position. FIG. 6 is a side view showing the periphery of the ejected recording medium accommodating portion used in the embodiment of the present invention, in a state where the ejected recording medium accommodating portion is at the second position and the pressing member is retracted. FIG. 6 is a side view showing the periphery of the discharged recording medium accommodating portion used in the embodiment of the present invention, in a state where the discharged recording medium accommodating portion is in a second position and the pressing member presses the recording medium. FIG. 5 is a configuration diagram showing a pressing member driving mechanism used in the embodiment of the present invention, where (a) shows a main part of the discharged recording medium at a standby position, and (b) shows a main part of the discharged recording medium at a first position. In some cases, (c) shows the case where the main part of the discharged recording medium is in the second position, and (d) shows the case where the pressing member has been retracted. It is a block diagram which shows the control apparatus used for embodiment of this invention. It is a flowchart which shows the control flow in embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As illustrated in FIG. 1, the image forming apparatus 10 includes an image forming unit 12, an image reading device 14, and a post-processing device 16.

  The image forming unit 12 includes a plurality of (for example, three stages) recording medium supply units 18, and each of the supply units 18 is provided with a supply head 20. The recording medium is supplied from one recording medium supply unit 18 selected by operating the supply head 20 to the image forming unit 24 via the recording medium conveyance path 22.

The image forming unit 24 is, for example, a xerographic method, and forms an image on a recording medium conveyed through the recording medium conveyance path 22.
More specifically, the image forming unit 24 includes an image carrier 26, a charging member 28 that uniformly charges the surface of the image carrier 26, and a laser writing device 30 that writes a latent image on the image carrier 26. A developing device 32 for developing the written latent image, a transfer member 34 for transferring the developed toner image to the recording medium, a cleaner 36 for removing residual toner, and a fixing device 38 for fixing the toner image on the recording medium. Have
Therefore, the surface of the image carrier 26 is uniformly charged by the charging member 28, a latent image is formed by the laser writing device 30, this latent image is developed by the developing device 32, and transferred to the recording medium by the transfer member 34. The image is fixed by the fixing device 38 and output to the post-processing device 16 described later.

  If double-sided printing is set, the recording medium having one surface fixed by the fixing device 38 is sent to the reversing device 40, reversed by the reversing device 40, sent to the reversing conveyance path 42, and again the recording medium. The sheet is returned to the conveyance path 22 and sent to the image forming unit 24 to print the second surface.

The image reading device 14 includes an automatic document feeder 44 such as an ADF (Auto Document Feeder), and a scanner 46 that reads and scans a document fed by the automatic document feeder 44.
The document is fed to the platen 48 by the automatic document feeder 44, and the image of the document is read by the scanner 46 on the platen 48 or during conveyance.

The input / output device 50 is formed of, for example, a touch panel, and is provided, for example, at the top of the image forming unit 12.
The input / output device 50 accepts an input operation from a user, and selects and displays processing contents of the image forming unit 12, the image reading device 14, and the post-processing device 16.

  The post-processing device 16 is, for example, a binding device (stapling device) that binds a plurality of recording media. The post-processing device 16 includes a post-processing device main body 76, and a first discharge path 52 and a second discharge path 52 for discharging the recording medium on which the image forming unit 12 described above is formed in the post-processing device main body 76. A discharge path 54 is provided. In the first path 52, for example, three transport members 56a to 56c are provided. In the first discharged recording medium accommodating portion 58, the recording medium conveyed by the three conveying members 56a to 56c is discharged, and the discharged recording medium is accommodated in the first discharged recording medium accommodating portion 58.

  The second discharge path 54 has a transport path for post-processing. The second discharge path 54 is provided with a stack accommodation portion 60. In the stacked housing portion 60, the front-rear direction of the stacked housing portion is inclined at a predetermined angle with respect to the horizontal direction, for example, 30 degrees. The stacked housing portion 60 is transported by the transport member 56d, the wing members 62a and 62b, and the transport control member 64. That is, the recording medium conveyed by the conveying member 56d is accommodated in the stack accommodating portion 60 by the wing member 62a that rotates clockwise, and is conveyed in the reverse direction by the discharge control member 64 that rotates counterclockwise. Then, the wing member 62b conveys the recording medium until the rear end of the recording medium hits the rear end of the stacked housing portion 60. A plurality of recording media are transported and stacked in the stacking container 60.

  The post-processing device unit 66 is provided at the rear end portion of the stacked housing portion 60. The post-processing device unit 66 staples the bundle of recording media stacked in the stacking container 60. However, the post-processing device unit 66 is not limited to staple binding, and may perform processing such as binding without a needle, punching, paper alignment, or marking. The post-processing device unit 66 is disposed so as to be inclined with respect to the horizontal direction in the same manner as the inclination of the stacked housing portion 58.

As shown in FIG. 2, the post-processing device unit 66 includes a post-processing device main body 68 and a guide member 70.
The guide member 68 is provided such that the longitudinal direction of the guide member 68 extends in the horizontal direction and the short side direction of the guide member 68 is inclined at a predetermined angle, for example, 30 degrees with respect to the horizontal direction. It has been.
In this guide member 68, for example, three guide portions 72a, 72b, 72c are formed. These three guide portions 72a, 72b, 72c have a length substantially equal to the maximum width of the recording medium P to be post-processed, and have a linear portion extending in the longitudinal direction and a curved portion extending upward on both sides from the linear portion. .

  The upper first guide portion 72a and the lower third guide portion 72c are formed in a U-shaped cross section. The second guide part 72b is formed as an elongated hole, and is disposed between the first guide part 72a and the third guide part 72c.

  The post-processing apparatus main body 68 incorporates a non-illustrated post-processing apparatus main body drive motor, and a drive shaft 74 extends from the motor. The drive shaft 74 is in contact with, for example, the second guide portion 72b, and the post-processing apparatus main body 68 moves along the guide portions 72a, 72b, and 72c by the rotation of the drive shaft 74.

  As shown in FIG. 2, the post-processing device main body 68 strikes a needle diagonally at one end of the recording medium P at one of the curved portions of the guide portions 72a, 72b, 72c (left side in the figure), and bundles the recording media P. Bind. Further, the post-processing device main body 68 stops on the left and right sides of the straight portions of the guide portions 72a, 72b, 72c, and drives the needle parallel to the end of the recording medium P at this position to bind the bundle of recording media P. . Further, the post-processing device main body 68 stops at the other curved portion of the guide portions 72a, 72b, and 72c (right side in the drawing), drives the needle diagonally at the other end of the recording medium P, and binds the bundle of recording media P. . Stitching on the left and right sides is called corner staple.

Returning to FIG. 1, the second discharge path 54 is further provided with a second discharge recording medium accommodating portion 76.
As shown in FIG. 3, the second discharged recording medium accommodating portion 76 is disposed below the discharge port 78, and a bundle of recording media post-processed by the above-described post-processing device unit 66 is placed on the discharge control member 64. The sheet is sandwiched and discharged from the discharge port 78 to the second discharged recording medium accommodating portion 76.

The second discharged recording medium accommodating portion 76 is supported by the support member 80. The support member 80 is guided by the guide member 82 so as to be movable up and down. The support member 80 is connected to the power transmission mechanism 84. The power transmission mechanism 82 has, for example, two upper and lower pulleys 86 and 86, and a tension member 88 stretched between the pulleys 86 and 86.
The pulley 86 disposed above is connected to a storage unit drive motor 90, and the second discharge recording medium storage unit 76 moves up and down via the power transmission mechanism 84 by the storage unit drive motor 90. It is like that.

  4 to 7, the peripheral configuration of the second discharged recording medium accommodating portion 76 is shown. A stopper surface 92 is provided in front of the second discharge recording medium accommodating portion 76 in the discharge direction. A discharge control member 64 is disposed above the stopper surface 92. The recording medium discharged to the second discharge recording medium 76 by the discharge control member 64 is accommodated with the end opposite to the discharge direction coming into contact with the stopper surface 90.

  A pressing member 94 is provided in the vicinity of the stopper surface 92. The pressing member 94 is supported on the rotating shaft 96. Further, a buffer member 98 is provided on the pressing side surface of the pressing member 94. The buffer member 98 is made of sponge or the like, and is fixed to the pressing side of the pressing member 94 with, for example, a double-sided tape. The pressing member 94 presses the rear end side of the recording medium accommodated in the second discharged recording medium accommodating portion 76 against the second discharged recording medium accommodating portion 76.

  FIG. 4 shows a state in which the second discharged recording medium accommodating portion 76 is in the first standby position. That is, the height of the second discharged recording medium accommodating portion 76 is controlled at a position where the buffer member 98 of the pressing member 94 is substantially in surface contact with the second discharged recording medium accommodating portion 76.

FIG. 5 shows a state in which the second discharged recording medium accommodating portion 76 is raised to the first position. In this first position, the distance of the discharge control member 64 to the second discharge recording medium accommodating portion 76 is shorter than that in the standby position. Therefore, as shown in FIG. 5, the bundle of recording media ejected by being sandwiched by the ejection control member 64 is second so that the leading end of the recording medium faces the leading end side of the second ejected recording medium accommodating portion 76. It comes into contact with the discharged recording medium accommodating portion 76. In the standby position shown in FIG. 4, the distance of the discharge control member 64 with respect to the second discharge recording medium housing portion 76 is long, so that the leading end of the recording medium is rounded and the stopper surface 92 of the second discharge recording medium housing portion 76 is. There is a risk of so-called curl accommodation. As shown in this embodiment, curling accommodation is prevented by raising the second discharged recording medium accommodating portion 76.
On the other hand, since the buffer member 98 of the pressing member 94 hits the second discharged recording medium accommodating portion 76 at the corner on the stopper surface 92 side, there is a possibility of peeling, and this first position needs to be eliminated in a short time.

FIG. 6 shows a state in which the second discharged recording medium container 76 is immediately lowered to a second position lower than the standby position after the leading edge of the recording medium hits the second discharged recording medium container 76.

FIG. 7 shows a state in which the pressing member 94 is retracted in a state where the second discharged recording medium accommodating portion 76 is in the second position. The retraction of the pressing member 94 may be performed simultaneously with the lowering of the discharged recording medium accommodating portion 76 to the second position. The retraction of the pressing member 94 is completed until the trailing edge of the recording medium is discharged by the discharge control member 64. As a result, the recording medium with the rear end ejected is aligned so that the rear end contacts the stopper surface 92. The second position has a longer distance to the discharge control member 64 than the standby position, and the pressing member 94 is retracted, so that the rear end of the recording medium does not interfere with the pressing member 94 and the discharge recording is performed. A so-called bank residue, in which the rear end of the recording medium accommodated in the medium accommodating portion 76 rises to the upper part of the stopper surface 92 and the discharge control member 64, is prevented.

  FIG. 8 shows a state where the pressing member 94 is returned to the pressing position, and the vicinity of the rear end of the recording medium stored in the second discharged recording medium storage unit 76 is pressed by the pressing member 94. Then, in order to prepare for the next bundle of recording media to be ejected, the second ejected recording medium accommodating portion 76 rises to the standby position shown in FIG. As described above, as shown in FIGS. 4 to 8, the head rises to the standby position, rises to the first position before the leading edge of the recording medium hits the previous recording medium, and the leading edge of the recording medium moves to the previous recording medium. After hitting, a cycle of descending to the second position, retracting the pressing member before the trailing edge of the recording medium is ejected, and pressing the recording medium by the pressing member after the trailing edge of the recording medium is ejected is repeated. As the recording medium is stacked on the second discharged recording medium accommodating portion 76, the second discharged recording medium accommodating portion 76 is lowered. The above-described standby position, first position, and second position are the positions of the second discharged recording medium accommodating portion 76 when the recording medium is not discharged, but when the recording medium is already discharged. The position of the recording medium stacked at the top.

The position of the recording medium stacked at the uppermost position is determined by detecting the position of the pressing member 94.
FIG. 9 is a configuration diagram illustrating the pressing member driving mechanism. The pressing member driving motor 100 is connected to the first gear 104 via the belt 102, and further, the pressing member 94 via the second gear 106, the third gear 108, the gear shaft 110, and the fourth gear 112. The rotary shaft 96 is connected.

  For example, a first detected portion 114 is provided around the third gear 108. The first detected portion 114 has a shape in which a part of a circle is cut out. A first detector SNR1 is provided around the first detected portion 114. When the first detected portion 114 rotates, the first detector SNR1 is turned on / off. A cam 116 for moving the fourth gear 112 is provided on the same shaft as the third gear 108. A clutch (not shown) is interposed between the third gear 108 and the first detected portion 114.

  For example, the gear shaft 110 and the fourth gear 112 are slid through friction. Further, an urging member 118 made of, for example, a spring is interposed between the pressing member 94 and the rotating shaft 96. The urging member 118 urges the pressing member 94 in the direction in which the recording medium is pressed.

  The rotating shaft 96 is provided with a second detected portion 120. For example, both sides of the second detected portion 120 with the rotation shaft 96 interposed therebetween are cut out. In addition, a second detection unit SNR2 and a third detection unit SNR3 are provided around the second detected unit 120. Depending on the position of the second detected unit 120, the combination of on / off of the second detection unit SNR2 and the third detection unit SNR3 is different.

  FIG. 9A shows a case where the vehicle is at the standby position. The pressing member driving motor 100 rotates in the clockwise direction, and rotates to the rotating shaft 96 via the belt 102, the first gear 104, the second gear 106, the third gear 108, the gear shaft 110, and the fourth gear 112. A clockwise rotational force is applied, and the pressing member 94 presses the recording medium through the biasing member 118. In this state, SNR1 is on, SNR2 is on, and SNR3 is on.

  When the second discharged recording medium accommodating portion is raised from the standby position, as shown in FIG. 9B, the second detected portion 120 causes the rotational force of the rotating shaft 96 and the urging force of the urging member 118 to move. Rotate counterclockwise against SNR2 and SNR3 on to stop the ascent of the second ejected recording medium accommodating portion 76 to the first position.

  When the second discharged recording medium accommodating portion 76 is lowered from the first position, the second detected portion 120 rotates clockwise as shown in FIG. 9C, and SNR2 is on and SNR3 is off. Thus, the lowering of the second discharged recording medium accommodating portion 76 is stopped and the second position is reached.

  When the clutch is engaged at the second position, the driving force of the pressing member driving motor 100 is transmitted to the first detected portion 114 and the cam 116, and the first detected portion 114 and the cam 116 are rotated clockwise. Rotate to When the first detected portion 114 rotates in the clockwise direction, the first detecting portion SNR1 is turned off and the pressing member driving motor 100 is stopped. When the cam 116 rotates in the clockwise direction, the fourth gear 112 is rotated in the clockwise direction, and the rotating shaft 96 is rotated counterclockwise against the biasing member 118. The rotating member 96 is rotated counterclockwise to move the pressing member 94 to the retracted position. When the clutch is released in this state, the pressing member 94 and the cam 116 are returned by the urging of the urging member 118, and the first detection unit pressing member driving motor 100 is driven, and the pressing is performed as shown in FIG. The member 94 is rotated clockwise to press the recording medium.

Next, control of the entire post-processing apparatus will be described.
FIG. 10 is a block diagram showing the control device 122.
In the control device 122, a CPU 124, a memory 126, a communication IF 128 that transmits and receives data to and from the image forming unit, a conveyance control unit 130, and a post-processing control unit 132 are connected via a bus.

  The CPU 124 executes processing based on the program stored in the memory 14 and controls the operations of the transport control unit 130 and the post-processing control unit 132.

FIG. 11 is a flowchart showing a main control flow executed by the CPU 124.
First, in step S10, the second discharged recording medium accommodating portion 76 (abbreviated as “discharged recording medium accommodating portion” in FIG. 11) is moved to the standby position (FIG. 4, FIG. Control.

In the next step S12, the height adjustment control of the second discharged recording medium accommodating portion 76, that is, the second discharged recording medium accommodating portion 76 is moved to the first position (FIGS. 5 and 9B). reference).
In the next step S14, the post-processing unit 66 described above performs post-processing on the recording medium.

  In the next step S <b> 16, a control is performed in which the bundle of recording media post-processed by the post-processing device unit 66 described above is discharged toward the second discharge recording medium accommodating portion 76 by rotating the discharge control member 64. . Here, while performing the discharge control, the process proceeds to the next step S18 at the timing when the leading end of the discharged recording medium reaches the second discharged recording medium accommodating portion 76, and the second discharged recording medium accommodating portion 76 is lowered. Implement motion control. As a result, the second discharged recording medium accommodating portion 76 moves to the second position (see FIGS. 6 and 9C). Further, in the next step S20, retraction (raising operation) control of the pressing member 94 is performed (see FIGS. 7 and 9D). The movement of the second discharged recording medium accommodating portion 76 to the second position in step S18 and the retreat of the pressing member 94 in step S20 are the discharge of the rear end of the recording medium to the second discharged recording medium accommodating portion 76. Control to complete before it is done. In the next step S22, the pressing member 94 is controlled to protrude (lowering operation) at a timing after the recording medium is discharged into the second discharged recording medium accommodating portion 76 (see FIG. 8).

In the next step S24, for example, it is determined whether or not the number of sets of five or fewer corner staples (see FIG. 2) is N or more. N is 150, for example, and is adjusted according to the recording medium discharge state of the actual post-processing apparatus. If the number of recording media to be stapled is small and the staple is a corner staple, the end of the recording medium may be raised by the needle rather than the bundle of recording media pressed by the pressing member 94 and the discharge port 78 may be blocked. For this reason, if it is determined in step S24 that the number of sets of five or fewer corner staples is N or more, the process does not return to step S12, but proceeds to step S26, moves to the standby position and is initialized, and then proceeds to step S14. Return. Without performing the process of step S12, the recording medium is discharged at the standby position to prevent the discharge port 78 from being blocked by the overlap of the needles. In this case, since the bundle of recording media is 5 sheets or less, there is little possibility of being stored in a round shape.
If the bundle of recording media exceeds five sheets or is not corner staple, the process of step S12 is performed.

  The above control is repeated until there is no recording medium to be post-processed. When the recording medium in the second discharged recording medium accommodating portion 76 is full, it is detected whether or not the recording medium has been taken out. If it has not been taken out, the process waits as it is. If it has been taken out, the process returns to START.

  In the above embodiment, the second discharge recording medium container is raised to the first position immediately before the recording medium is discharged to the second discharge recording medium container. The medium container may be in the first position before the leading edge of the recording medium hits. For example, when the recording medium is stacked on the stack container 60, the medium container is raised from the standby position to the first position. Also good.

DESCRIPTION OF SYMBOLS 10 Image forming apparatus 12 Image forming part 16 Post-processing apparatus 64 Discharge control member 66 Post-processing apparatus unit 68 Post-processing apparatus main body 76 Second discharge recording medium accommodating part 78 Discharge port 94 Press member 98 Buffer member 124 CPU

Claims (7)

A post-processing apparatus main body for performing post-processing on the recording medium;
A discharge recording medium storage portion for storing a recording medium post-processed by the post-processing apparatus main body and discharged from the discharge port;
Driving means for driving the discharged recording medium accommodating portion in the vertical direction;
A pressing member for pressing a part of the recording medium accommodated in the discharged recording medium accommodating portion;
Control means for controlling the driving means and the pressing member,
The control means moves the ejected recording medium accommodating portion to a first position above a standby position to eject the recording medium to the ejected recording medium accommodating portion and before being accommodated in the ejected recording medium accommodating portion. The ejected recording medium accommodating portion is moved to a second position lower than the standby position, the pressing member is retracted, and the recording medium is accommodated in the ejected recording medium accommodating portion and then the recording medium is pressed by the pressing member. To control,
Post-processing device.   The post-processing apparatus according to claim 1, wherein the post-processing apparatus main body is a needle binding apparatus that staples a plurality of recording media on a non-discharge side.   The post-processing device according to claim 2, wherein the pressing member presses a side stapled by the needle binding device.   The pressing member is provided with a buffer member on the side pressing the recording medium. The buffer member hits the recording medium at the contact surface of the buffer member at the standby position, and the buffer member at the first position. The post-processing apparatus according to claim 1, which hits at a corner of a member. The control means includes the discharge recording medium accommodating portion without moving the discharged recording medium accommodating portion to a first position above a standby position by a stacking state of the bundle of recording media in the discharged recording medium accommodating portion. The ejected recording medium accommodating portion is moved to a second position lower than the standby position before being accommodated in the recording medium, and the pressing member is retracted, and the pressing member is accommodated after the recording medium is accommodated in the ejected recording medium accommodating portion. The post-processing apparatus according to claim 1, wherein the post-processing apparatus is controlled to press the recording medium. Forming an image on a recording medium, an image forming unit;
A post-processing device that performs post-processing on a recording medium on which an image is formed by the image forming unit;
The post-processing device includes:
A post-processing apparatus main body for performing post-processing on the recording medium;
A discharge recording medium storage portion for storing a recording medium post-processed by the post-processing apparatus main body and discharged from the discharge port;
Driving means for driving the discharged recording medium accommodating portion in the vertical direction;
A pressing member for pressing a part of the recording medium accommodated in the discharged recording medium accommodating portion;
Control means for controlling the driving means and the pressing member,
The control means moves the ejected recording medium accommodating portion to a first position above a standby position to eject the recording medium to the ejected recording medium accommodating portion and before being accommodated in the ejected recording medium accommodating portion. The ejected recording medium accommodating portion is moved to a second position lower than the standby position, the pressing member is retracted, and the recording medium is accommodated in the ejected recording medium accommodating portion and then the recording medium is pressed by the pressing member. To control,
Image forming apparatus. Moving the discharged recording medium accommodating portion to a first position above the standby position and discharging the recording medium to the discharged recording medium accommodating portion;
Moving the discharged recording medium accommodating portion to a second position lower than a standby position and retracting the pressing member before being accommodated in the discharged recording medium accommodating portion;
A program for causing a computer to execute a step of pressing the recording medium with the pressing member after the recording medium is stored in the discharged recording medium storage unit.

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