JP5692568B2 - Plate member stacking apparatus, image forming apparatus, and post-processing apparatus - Google Patents

Description

  The present invention relates to a plate-shaped member stacking apparatus, an image forming apparatus, and a post-processing apparatus.

  The post-processing apparatus performs bookbinding or the like on a sheet as an image-formed plate-like member, and an image forming apparatus including a post-processing unit that performs bookbinding or the like is also provided. In order to perform bookbinding or the like, it is necessary to accurately align sheets on which images are formed.

  For example, Patent Document 1 discloses a technique in which a paper is dropped by its own weight in a vertically oriented staple tray and vertically aligned, and both sides are aligned by sandwiching the paper with a fence that can move on both sides of the paper. Has been.

  Patent Document 2 discloses a technique in which discharged paper is moved in a direction opposite to the discharging direction by a return roller to align the rear end, and alignment in the width direction intersecting the discharging direction is performed by an aligning unit.

Japanese Patent Laid-Open No. 11-60026 JP 2003-2524 A

  The present invention provides a plate-shaped member stacking device, an image forming apparatus, and a post-processing device capable of accurately aligning plate-shaped members even when the type of the plate-shaped members is changed as compared with the case where the present invention is not adopted. The purpose is to do.

According to the first aspect of the present invention, there is provided a conveyance path that conveys a thin plate-like member in a certain conveyance direction, and a plate that is provided in the conveyance path and selects any one of a plurality of discharge positions in the conveyance direction. A discharge portion for discharging the plate-like member, a stacking portion on which the discharged plate-like member is stacked, an aligning means that moves to the plate-like member side in the stacking portion and hits the plate-like member, The operation content of the aligning means corresponding to the type of the plate-shaped member is stored for each discharge position and the operation content of the aligning means corresponding to the plurality of types of the plate-shaped member for at least one discharge position storage means for storing, e Bei and control means for controlling the operation of said aligning means on the basis of the operation content of said aligning means stored in said storage means, said aligning means is provided in the loading section A rotation axis; A rod fixed to the rotary shaft and discharged to the stacking portion and having a tip abutting on the upper surface of the plate member to guide the traveling direction of the plate member downward; clockwise and counterclockwise with the rotary shaft as a fulcrum An upper and lower guide that rotates in both clockwise directions is provided .

  According to a second aspect of the present invention, in the first aspect of the invention, the discharge unit is provided with a plurality of discharge ports arranged along the transfer direction of the transfer path, and the discharge ports that are openable and closable. And a guide member that guides the plate-like member to the stacking portion, wherein the guide member of the discharge port at a position corresponding to the length of the plate-like member in the transport direction is opened.

  The invention according to claim 3 is the invention according to claim 2, wherein the guide member has an end on the transport direction side rotatably supported by the discharge port and is opened upward. And

  The invention according to a fourth aspect is the invention according to the first aspect, wherein the discharge portion is provided to extend along the transfer direction of the transfer path, and to be movable along the discharge port, and the transfer direction. A moving member that opens the discharge port on the transport direction side with respect to the end portion on the side and blocks the discharge port on the opposite side to the transport direction with respect to the end portion, and the length in the transport direction of the plate-like member The end of the moving member is disposed at a position corresponding to the above.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the aligning means includes an aligning member that contacts one side of the plate-like member from the opposite side of the stacking portion. To do.

  The invention according to claim 6 is the plate member stacking according to any one of claims 1 to 5, wherein an image forming unit that forms an image on a thin plate member and a plate member on which an image is formed are stacked. An image forming apparatus including the apparatus.

  The invention according to claim 7 is a post-processing device that performs post-processing on a plate-like member on which an image is formed, comprising the plate-like member stacking device according to any one of claims 1 to 5.

  According to the invention which concerns on Claim 1, even if the kind of plate-shaped member changes compared with the case where this invention is not employ | adopted, a plate-shaped member can be arrange | equalized correctly.

  According to the invention which concerns on Claim 2, the discharge position of a plate-shaped member is decided.

  According to the invention of claim 3, the plate-like member is forcibly discharged from the discharge port by the guide means.

  According to the invention which concerns on Claim 4, a structure is simplified compared with the case where this invention is not employ | adopted.

  According to the invention which concerns on Claim 5, a plate-shaped member can be arrange | equalized quickly.

  According to the sixth aspect of the present invention, an image forming apparatus capable of accurately aligning the plate-like members even when the type of the plate-like members is changed as compared with the case where the present invention is not adopted is provided.

  According to the invention which concerns on Claim 7, compared with the case where this invention is not employ | adopted, even if the kind of plate-shaped member changes, the post-processing apparatus which can align a plate-shaped member correctly is provided.

1 is a schematic diagram illustrating an entire image forming apparatus according to an embodiment of the present disclosure. It is a perspective view showing a part of a paper stacking unit according to an embodiment of the present invention. It is a sectional side view showing a paper stacking unit according to an embodiment of the present invention. It is a sectional side view showing a paper stacking unit according to an embodiment of the present invention. It is a perspective view which shows the conveyance guide in one Embodiment of this invention. It is a perspective view which shows the conveyance guide in one Embodiment of this invention. It is a sectional side view which shows the paper stacking part which concerns on other embodiment of this invention. It is a perspective view which shows the conveyance guide in other embodiment of this invention. It is a sectional side view which shows the paper stacking part which concerns on other embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the image forming apparatus 1 performs image processing based on image information output from a control device such as a personal computer, and forms an image on a sheet P by an electrophotographic method. The image forming apparatus 1 includes a paper feeding unit 10, an image forming unit 20, and a paper stacking unit 50 as an example of a plate-shaped member stacking device. Hereinafter, the configuration of each unit will be described in order.

(1) Configuration of Paper Feed Unit In the paper feed unit 10, a plurality (four in this embodiment) of paper feed means 11, 12, 13, and 14 are arranged. A pickup roll 15 for taking out the uppermost sheet P of the stacked sheets P is disposed above the sheet feeding means 11, and a sheet P as an example of a thin plate member is disposed on the left side of the pickup roll 15. A pair of conveyance rolls 16 that are fed leftward are arranged. Note that the paper P includes a resin sheet such as an OHP sheet in addition to the paper sheet. On the downstream side of the transport roll pair 16, the transport path is bent upward by a guide or the like, and a plurality of transport roll pairs 17 are arranged side by side in the vertical direction. In addition, since the same structure is provided also in the paper feeding means 12-14, the same code | symbol is attached | subjected to the equivalent component.

  Here, the paper feeding means 11 accommodates the B4 size or A3 size paper P with its short side facing the transport direction, and the paper feed means 12 has the A4 size paper facing the short side toward the transport direction. Is contained. Further, the paper feeding means 13 accommodates B5 size paper P with its long side facing in the transport direction, and the paper feeding means 14 accommodates A4 size paper P with its long side facing in the transport direction. Has been.

  A conveyance path is bent rightward by a guide or the like on the downstream side of the uppermost one of the conveyance roll pairs 17, and a plurality (six in this embodiment) of conveyance roll pairs 18 are arranged at the tip. Has been. In FIG. 1, reference numeral 19 denotes a pair of transport rolls provided in the manual sheet feeding means.

(2) Configuration of Image Forming Unit In the image forming unit 20, a plurality (three in this embodiment) of conveying roll pairs 21 aligned with the conveying roll pairs 18 are arranged side by side in the horizontal direction. A registration roll pair 22 that arranges the posture of the paper P is disposed on the downstream side of the transport roll pair 21. A toner cartridge 23 containing black toner is disposed below the pair of transport rolls 21.

  An endless photosensitive belt 26 stretched by a plurality of rolls 24 and a plurality of guides 25 is disposed at the center of the image forming unit 20. Around the photosensitive belt 26, a charging means 27 for uniformly charging the surface of the photosensitive belt 26, an exposure means 28 for irradiating the surface of the photosensitive belt 26 with light to form an electrostatic latent image, A developing unit 29 that visualizes the electrostatic latent image as a toner image with toner, a cleaner 30 that removes toner remaining on the surface of the photosensitive belt 26 after transfer, and a charge eliminating unit 31 are provided. A transfer corotron 32 for transferring the toner image on the photosensitive belt 26 onto the paper P is disposed above the photosensitive belt 26.

  A fixing unit 33 is disposed on the right side (downstream side) of the transfer corotron 32. The fixing unit 33 includes a fixing roll 33a and a pressure roll 33b, and a switching unit 35 for switching the conveyance direction of the paper P between the reversing unit 34 side and the discharge roll pair 38 side is disposed on the downstream side. The reversing unit 34 includes a drive roll 34a that can switch the rotation direction, and a driven roll 34b that can contact the drive roll 34a and leave the drive roll 34a. Above the reversing unit 34, a transport roll pair 36 and a switching unit 37 are arranged. The switching unit 37 switches the transport direction of the paper P between the discharge roll pair 38 side and the transport roll pair 39 side that transports the image P on the back side of the paper P.

  In FIG. 1, reference numeral 40 denotes a control device. The control device 40 includes a storage unit 41 that stores a program that controls each unit of the image forming apparatus 1 and a control unit 42 that executes the program. Image data is input to the control device 40 from various recording media such as a CD ROM, an external personal computer, or the like, and the control unit 42 controls each part of the image forming unit 20 to form an image from the image data. . Further, the control device 40 includes a designation unit 43 having a numeric key for designating the number of copies for image formation, a key for designating any of the paper feeding units 11 to 14, and a display unit 44 for displaying a paper jam or the like. I have.

  In the present embodiment, the type of the paper P is designated by selecting one of the paper feeding units 11 to 14. That is, the type of the paper P in the present embodiment refers to the size of the paper P such as A4 size and B5 size and the direction of the paper P to be conveyed. Therefore, in the following, when specifying the type of the paper P, the type of the paper P when the short side of the B4 size, A3 size, or A4 size paper P is transported in the transport direction is referred to as B4S, A3S. Or A4S, and the type of the paper P when the B5 size or A4 size paper P is transported with its long side directed in the transport direction is B5L or A4L.

  The storage unit 41 of the control device 40 stores the operation contents of each unit of the paper stacking unit 50 corresponding to the designated type of paper P, and the control unit 42 corresponds to the designated type of paper P. The operation of each unit of the paper stacking unit 50 is controlled.

(3) Configuration of Paper Stacking Unit In FIG. 1, reference numeral 51 denotes a transport roll pair that transports the paper P transported from the discharge roll pair 38 of the image forming unit 20. On the downstream side of the pair of conveyance rolls 51, switching means 55 for switching the conveyance direction of the paper P between the discharge roll pair 52 and the sheet discharge unit 53 side and the conveyance guides 61 and 62 side is arranged.

  In FIG. 1, reference numeral 56 denotes a paper table. The paper base 56 is supported by a guide 57 so as to be movable in the vertical direction, and is moved in the vertical direction by a drive mechanism (not shown). As shown in FIG. 2, the paper base 56 is composed of two plates, and a rear end guide 58 as an example of an aligning unit is disposed between the paper bases 56. The rear end guide 56 is movable in the direction opposite to the conveyance direction of the paper P, and presses the rear end of the paper P to press the paper P against the abutting member 59 disposed forward. On both sides of the paper table 56, both side guides 60 as an example of aligning means are arranged. The both side guides 60 are movable in the width direction intersecting with the conveyance direction of the paper P, and are positioned in the width direction of the paper P by hitting both side edges of the paper P.

  As shown in FIG. 3, on the downstream side of the transport roll pair 51, transport guides 61 and 62 as an example of a transport path are arranged facing each other in the vertical direction. As shown in FIG. 5, a plurality (four in this embodiment) of discharge ports 63 are formed in the lower conveyance guide 62 side by side in the conveyance direction. The discharge port 63 positioned closest to the transport direction is used when the type of paper P is B5L or A4L. The left outlet 63 is used when the type of paper P is A4S. The left outlet 63 is used when the type of paper P is B4S and the left outlet 63 is used when the type of paper P is A3S. In this case, the operation range of the trailing edge guide 58 is changed corresponding to the length of the paper P in the transport direction. Further, the operation range of the both-side guide 60 is changed in accordance with the dimension in the width direction intersecting with the transport direction of the paper P.

  A lid 64 as an example of a guide member is rotatably supported by the discharge port 63 by a shaft 65 provided at an end in the direction opposite to the transport direction. The lid body 64 is opened and closed by a drive mechanism (not shown), constitutes a transport path for transporting the paper P in the closed state, and functions as a discharge port 63 for discharging the paper P in the open state.

  As shown in FIG. 3, upper and lower guides 66 as an example of an alignment member are disposed at the ends of the guides 61 and 62 on the conveyance direction side. The vertical guide 66 includes a rotary shaft 66a that is rotatably supported by the main body of the paper stacking unit 50, and two bars 66b that are fixed to the rotary shaft 66a. On the other hand, a solenoid 67 is attached to the upper conveyance guide 61, and a plunger 67 a that can move in the vertical direction of the solenoid 67 and a rod 66 b are connected by a wire 68. When the solenoid 67 is operated, the plunger 67a moves upward, and the vertical guide 66 rotates counterclockwise. When the operation of the solenoid 67 is stopped, the plunger 67a is lowered by a repulsive force of a coil spring (not shown) built in the solenoid 67, whereby the vertical guide 66 is rotated clockwise by the weight of the rod 66b.

  In FIG. 3, reference numeral 69 denotes a sensor for detecting the paper P. A sensor 69 is provided at each discharge port 63 and detects the leading edge of the paper P entering the discharge port 63. Reference numeral 70 denotes a bookbinding apparatus that staples the sheets P stacked on the sheet table 56.

(4) Basic operation of image forming apparatus The surface of the photosensitive belt 26 is uniformly charged by the charging means 27. Further, the exposure unit 28 emits a light beam based on the image data on the photosensitive belt 26 to perform exposure corresponding to the image, and an electrostatic latent image corresponding to the image is formed on the surface of the photosensitive belt 26. .

  The electrostatic latent image corresponding to the image on the photoreceptor belt 26 is developed with toner held by the developing unit 29 to become a toner image. Then, for example, the sheet P is transferred to the sheet P conveyed to the photosensitive belt 26 at the conveyance timing determined by the resist roll pair 22 through the pickup roll 15 and the conveyance roll pairs 16, 17, 18, and 21 from the paper feeding unit 11. The toner image is transferred from the photosensitive belt 26 onto the paper P by the electrostatic attraction force of the transfer corotron 32 to which a bias is applied.

  In this transfer, not all of the toner image is transferred to the paper P, and a part of the toner image remains on the photosensitive belt 26. Further, toner external additives and the like are also attached to the surface of the photoreceptor belt 26. After the transfer, the photosensitive belt 26 passes through the cleaner 30, and residual toner on the photosensitive belt 26 is removed. In addition, static electricity on the photosensitive belt 26 is removed by the charge removing unit 31. Thereafter, the surface of the photosensitive belt 26 is charged again by the charging unit 27 for the next image forming cycle.

  Further, the paper P to which the toner image has been transferred is conveyed to the fixing roll 33a and the pressure roll 33b of the fixing unit 33, and the toner image is fixed on the paper P by heat and pressure to form an image. Then, the paper P on which the image is formed is conveyed to the reversing unit 34, the conveyance direction is reversed, reaches the registration roll 22 through the conveyance roll pairs 36, 39, and 21, and on the back surface of the paper P in the same manner as described above. An image is formed. The paper P on which an image is also formed on the back surface is conveyed to the discharge roll pair 38 and is conveyed to the paper stacking unit 50.

(5) Operation of the Paper Stacking Unit The transport direction of the paper P transported to the transport roll pair 51 of the paper stacking unit 50 is switched by the switching means 55 between the paper discharge roll pair 52 side and the transport guides 61 and 62 side. The paper P conveyed to the paper discharge roll pair 52 is discharged to the paper discharge unit 53. The sheets P transported to the transport guides 61 and 62 are stacked as follows.

  The user of the image forming apparatus 1 designates one of the paper feeding units 11 to 14 by the designation unit 43 of the control device 40. In this case, when the user designates the paper feeding means 13, B5L is designated as the type of the paper P. Then, as shown in FIG. 3, the lid 64 of the discharge port 63 closest to the transport direction is opened at a predetermined angle downward. Further, the rear end guide 58 and the both side guides 60 move to positions where the paper P can be easily guided. When the paper P on which an image is formed is transported by the transport roller pair 51 and the paper P detached from the transport roller pair 51 is transported through the paper guides 61 and 62 by inertia, the leading edge of the paper P reaches the discharge port 63. Enter and drop over the lid 64.

  Then, after the set time has elapsed after the sensor 69 detects the leading edge of the paper P that is closest to the transport direction, the operation of the solenoid 67 is stopped, the plunger 67a is lowered, and the vertical guide 66 is moved by its own weight of the bar 66b. Rotate clockwise. By this operation, the tip of the bar 66b hits the upper surface of the paper P, and the traveling direction of the paper P is corrected downward. Thereafter, the trailing edge of the paper P is pushed by the trailing edge guide 58 and the leading edge abuts against the abutting member 59, and both side edges of the paper P are pushed by the both-side guides 60 and positioned at predetermined positions.

  Here, when the user designates the paper feeding means 14 by the designation unit 43 of the control device 40, A4L is designated as the type of the paper P. Then, also in this case, the cover body 64 of the discharge port 63 on the transport direction side is opened. Further, the rear end guide 58 and the both side guides 60 move to positions where the paper P can be easily guided. Since the A4 size paper P is heavier than the B5 size paper P, the time until it reaches the upper and lower guides 66 after being detected by the sensor 69 is longer than that for the B5 size paper P. For this reason, the time from when the sensor 69 detects the paper P until the operation of the solenoid 67 is stopped is set longer than that for the B5 size paper P. Therefore, the bar 66b of the upper and lower guides 66 hits the upper surface of the paper P at an appropriate timing, and the paper P can be positioned smoothly.

  Here, in the case where the B5L and A4L paper P is discharged from the discharge port 63 on the most transport direction side, considering the case where the storage unit 41 stores only the operation of the upper and lower guides 66 for B5L, A4 size paper When P reaches the upper and lower guides 66, the rod 66b hits the upper surface of the paper P at an early timing. For this reason, it is assumed that the sheet P stops at a position retracted from the abutting member 59 and the position cannot be corrected by the rear end guide 58. In this regard, in the paper stacking unit 50 of the present embodiment, occurrence of such inconvenience can be suppressed.

  Next, assuming that the user of the image forming apparatus 1 designates the paper feeding unit 11 using the designation unit 43 of the control device 40, the type of the paper P is used when A3 size paper is stored in the paper feeding unit. A3S is specified. Then, as shown in FIG. 4, the lid body 64 of the discharge port 63 on the side opposite to the transport direction is opened. Then, the paper P coming out of the discharge port 63 falls, and when it reaches the vertical guide 66, the stick 66b hits the upper surface of the paper P and the traveling direction is corrected downward. Thereafter, the trailing edge of the paper P is pushed by the trailing edge guide 58 and the leading edge abuts against the abutting member 59, and both side edges are pushed by the both side guides 60 and positioned at predetermined positions.

  The image forming apparatus 1 is configured to form an image from the first page to the last page of a document, for example, and is stapled by the bookbinding apparatus 70 when the image formation up to the last page is completed. In this embodiment, a punching device that punches the paper P can be provided. Further, it is also possible to simply stack the image-formed paper P on the paper board 56.

  According to the sheet stacking unit 50 configured as described above, the operation content of the upper and lower guides 66 when the storage unit 41 of the control device 40 is B5L and the operation content of the upper and lower guides 66 when the storage unit 41 is A4L are stored. Since the control unit 42 controls the operation of the upper and lower guides 66 based on the contents, the paper P can be accurately aligned even if the type of the paper P changes compared to a case where such a configuration is not adopted. In particular, in the above embodiment, since the plurality of discharge ports 63 are provided according to the type of the paper P, the discharge position of the paper P is determined. Further, since the traveling direction of the paper P is corrected downward by the vertical guide 66, the paper P can be quickly aligned.

(6) Other Embodiments Next, another embodiment of the present invention will be described with reference to FIGS. In the following description, the same components as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the figure, reference numeral 80 denotes a lower conveyance guide. The transport guide 80 is formed with a discharge port 81 extending along the transport direction. Further, a partition member 82 as an example of a moving member is disposed on the lower surface of the transport guide 80 so as to be movable in the transport direction by a support roll 83. The partition member 83 closes a part of the discharge port 81, and increases or decreases the opening area of the discharge port 81 by being moved in the transport direction by a driving mechanism (not shown).

  7 and 8 show the arrangement of the partition members 83 when the types of paper P are B5L and A4L. The position of the end portion of the partition member 83 when the type of the paper P is A4S is indicated by reference symbol A, the position of the end portion of the partition member 83 when B4S is indicated by reference symbol B, and the end portion of the partition member 83 when A3S is used. The position of the part is indicated by symbol C.

  Also in the present embodiment, the operation contents of the upper and lower guides 66 when the storage unit 41 of the control device 40 is B5L and the operation contents of the upper and lower guides 66 when the storage device 41 is A4L are stored, and control is performed based on the stored operation contents. The unit 42 controls the operation of the vertical guide 66. Therefore, compared to the case where such a configuration is not adopted, the sheets P can be accurately aligned even if the type of the sheet P changes. In particular, in the above embodiment, the configuration is simplified and the discharge position of the paper P can be changed steplessly, so that the range of applicable paper is wide. For example, images can be formed and loaded on postcards or non-standard size paper.

  FIG. 9 shows still another embodiment of the present invention. In this embodiment, the lid 91 provided on the lower conveyance guide 90 is rotatably supported by a shaft 92 at an end portion on the conveyance direction side, and is configured to open upward. Therefore, the sheet P conveyed in the conveyance guides 61 and 90 hits the lid 91 and is forcibly discharged from the discharge port 63, which is advantageous when the conveyance speed of the sheet P is high.

  In the above embodiment, the operation timing of the upper and lower guides 66 is changed when the type of the paper P is B5L or A4L, but the present invention is not limited to such an aspect. For example, the time and the number of times that the upper and lower guides 66 are in contact with the paper P can be changed. Further, the operation timing, the operation time, and / or the number of operations can be changed for the operations of the rear end guide 58 and the both side guides 60.

  In the above-described embodiment, the operation timing of the upper and lower guides 66 is changed when the discharge port 63 at the end in the transport direction of the paper P is used. However, other discharge ports 63 also support a plurality of types of paper P. The operation of the aligning means to be performed can be set. Further, the operation of the aligning means can be set in accordance with the type such as the weight per sheet, the material of the paper P such as paper or resin, and the surface property of the paper P such as plain paper or glossy paper.

  The plate-shaped member stacking apparatus according to the present invention includes, for example, a printing machine, a copying machine, a printer, a facsimile, and an image forming apparatus such as an apparatus combining these functions, and a post-processing apparatus provided adjacent to the image forming apparatus. Etc. can be used.

DESCRIPTION OF SYMBOLS 1 Image forming apparatus 40 Control apparatus 50 Paper stacking part 57 Paper stand 58 Back end guide 59 Abutting means 60 Both-sides guide
61, 62, 80, 90 Transport guide 63 Discharge port 64, 91 Lid 66 Vertical guide P Paper

Claims (7)

A transport path for transporting the thin plate-shaped plate member in a certain transport direction;
A discharge unit that is provided in the transfer path and that discharges the plate-like member by selecting one of a plurality of discharge positions in the transfer direction;
A stacking unit on which the discharged plate-like members are stacked;
An aligning means that moves toward the plate-like member in the stacking portion and hits the plate-like member;
The operation content of the aligning means corresponding to the type of the plate-shaped member is stored for each discharge position of the plate-shaped member, and the plurality of types of the plate-shaped member are corresponding to at least one discharge position. Storage means for storing the operation content of the aligning means;
E Bei and control means for controlling the operation of said aligning means on the basis of the operation content of said aligning means stored in said storage means,
The aligning means has a rotating shaft provided in the stacking section and a top surface of the plate-shaped member fixed to the rotating shaft and discharged to the stacking section so that the leading end of the plate-shaped member moves downward. A plate-shaped member stacking apparatus comprising a guide rod and a vertical guide that rotates in both a clockwise direction and a counterclockwise direction with the rotating shaft as a fulcrum . The discharge unit includes a plurality of discharge ports arranged along the transport direction, and a guide member that is provided in the discharge port so as to be openable and closable and guides the plate-like member to the stacking unit when opened.
The plate-shaped member stacking apparatus according to claim 1, wherein a guide member of the discharge port is opened at a position corresponding to a length of the plate-shaped member in a conveyance direction.   The plate-shaped member stacking device according to claim 2, wherein the guide member has an end on the transport direction side rotatably supported by the discharge port and is opened upward. The discharge portion is provided to extend along the transport direction and to be movable along the discharge port. The discharge portion opens the discharge port on the transport direction side from the end portion on the transport direction side and opens the end. A moving member that blocks the discharge port on the opposite side of the transport direction from the part,
The plate-shaped member stacking apparatus according to claim 1, wherein an end portion of the moving member is disposed at a position corresponding to a length of the plate-shaped member in a conveyance direction.   5. The plate-shaped member stacking apparatus according to claim 1, wherein the aligning unit includes a aligning member that hits one side of the plate-shaped member from the opposite side of the stacking unit.   An image forming apparatus comprising: an image forming unit that forms an image on a thin plate-like member; and the plate-like member stacking device according to claim 1 for loading the plate-like member on which the image is formed. .   A post-processing device that performs post-processing on a plate-like member on which an image is formed, comprising the plate-like member stacking device according to claim 1.

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