WO2024034269A1 - Sheet ejection device, image formation device, and method for using sheet ejection device - Google Patents

Sheet ejection device, image formation device, and method for using sheet ejection device Download PDF

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Publication number
WO2024034269A1
WO2024034269A1 PCT/JP2023/023055 JP2023023055W WO2024034269A1 WO 2024034269 A1 WO2024034269 A1 WO 2024034269A1 JP 2023023055 W JP2023023055 W JP 2023023055W WO 2024034269 A1 WO2024034269 A1 WO 2024034269A1
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WIPO (PCT)
Prior art keywords
sheet
tray
discharge
mounting
paper
Prior art date
Application number
PCT/JP2023/023055
Other languages
French (fr)
Japanese (ja)
Inventor
陽志 磯貝
司 杉山
健一 田中
良晃 石原
琢哉 有月
英雄 谷井
Original Assignee
京セラドキュメントソリューションズ株式会社
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Application filed by 京セラドキュメントソリューションズ株式会社 filed Critical 京セラドキュメントソリューションズ株式会社
Publication of WO2024034269A1 publication Critical patent/WO2024034269A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers

Definitions

  • the present invention relates to a sheet discharging device, an image forming device, and a method of using the sheet discharging device.
  • An image forming apparatus such as a printer includes a sheet ejecting device that ejects a sheet on which an image is formed.
  • the sheet discharge device includes a discharge port and a paper discharge tray (see, for example, Patent Document 1).
  • the sheet is discharged in a horizontal discharge direction.
  • the paper ejection tray is provided downstream of the ejection port in the ejection direction and is inclined with respect to the ejection direction, and supports the sheet ejected from the ejection port.
  • the sheet discharging device is sometimes shared by an electrophotographic image forming apparatus and an inkjet image forming apparatus.
  • the sheet ejected by the sheet ejecting device is a sheet on which an image has been formed using an electrophotographic method
  • in order to prevent the sheets ejected to the paper ejecting tray from being uneven It is desirable to increase the inclination angle of the paper ejection tray with respect to the ejection direction.
  • the ejector It is desirable to reduce the inclination angle of the paper tray with respect to the ejection direction.
  • the sheet discharging device is provided with an angle adjustment mechanism that can vary the inclination angle of the sheet discharging tray with respect to the discharging direction.
  • An object of the present invention is to provide a sheet discharging device, an image forming apparatus, and a method of using the sheet discharging device that can switch the inclination angle of a paper discharging tray with a simple configuration.
  • a sheet discharge device includes a discharge port, a paper discharge tray, and a mounting section. At the discharge port, the sheet is discharged in a horizontal discharge direction.
  • the paper ejection tray includes a sheet support portion that supports the sheet ejected from the ejection port on a downstream side of the ejection port in the ejection direction, and an end portion of the sheet support portion on the upstream side in the ejection direction. It has a protrusion that protrudes outward in the width direction from a side portion in the width direction perpendicular to the discharge direction.
  • the paper ejection tray is attached to and detached from the attachment section.
  • the mounting section includes a wall section, a plurality of holes, and a tray support section.
  • the wall portion faces the side portion of the seat support portion.
  • the plurality of holes are arranged in the wall along the discharge direction, and each hole is formed so as to be inserted through the protrusion.
  • the tray support section moves the paper ejection tray, in which the protrusion is inserted into one of the plurality of holes, from the lower side of the paper ejection tray at an inclination angle with respect to the ejection direction corresponding to the plurality of holes.
  • the mounting position is supported in a position corresponding to the hole through which the protrusion is inserted.
  • An image forming apparatus includes an image forming section and the sheet discharging device.
  • the image forming section forms an image on the sheet.
  • the sheet discharge device discharges the sheet on which an image has been formed by the image forming section.
  • a method of using a sheet discharging device includes a plurality of the discharge ports arranged in a vertical direction, a plurality of the paper discharge trays corresponding to the plurality of discharge ports, and a plurality of the discharge ports. and a plurality of the mounting sections corresponding to the sheet discharging device, and includes a mounting step.
  • the paper ejection tray is mounted on each of the mounting portions such that the higher the position of the paper ejection tray, the greater the inclination angle of the paper ejection tray with respect to the ejection direction.
  • FIG. 1 is a diagram showing the configuration of an image forming apparatus according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing the configuration of a post-processing device of an image forming apparatus according to an embodiment of the present invention.
  • FIG. 3 is a diagram showing the configuration of a paper discharge tray of an image forming apparatus according to an embodiment of the present invention.
  • FIG. 4 is a diagram showing the configuration of the mounting section of the image forming apparatus according to the embodiment of the present invention.
  • FIG. 5 is a diagram showing a modification of the mounting section of the image forming apparatus according to the embodiment of the present invention.
  • FIG. 1 is a block diagram showing the system configuration of an image forming apparatus 100.
  • the image forming apparatus 100 is a printer that has a print function that forms an image on a sheet based on image data. Note that the present invention is applicable to image forming apparatuses such as fax machines, copy machines, and multifunction devices.
  • the image forming apparatus 100 includes an image forming section 1, a sheet transport section 2, a post-processing device 3, an operation display section 4, a storage section 5, and a control section 6.
  • the image forming unit 1 realizes the printing function.
  • the image forming section 1 forms an image using an inkjet method.
  • the image forming section 1 includes a recording head that ejects ink toward a sheet.
  • the image forming section 1 forms an image on a sheet conveyed by the sheet conveying section 2.
  • the image forming section 1 may form an image using an image forming method different from an inkjet method such as an electrophotographic method.
  • the sheet transport unit 2 transports the sheets stored in the paper feed cassette to the post-processing device 3 via the image forming position by the image forming unit 1.
  • the sheet conveyance unit 2 includes the paper feed cassette and a plurality of conveyance rollers.
  • the post-processing device 3 realizes a sorting function for sorting the sheets conveyed by the sheet conveyance section 2.
  • the post-processing device 3 discharges the sheet on which the image has been formed by the image forming section 1 .
  • the operation display unit 4 is a user interface of the image forming apparatus 100.
  • the operation display section 4 includes an operation section and a display section.
  • the operation section inputs various information to the control section 6 according to user's operations.
  • the operation unit is an operation key or a touch panel.
  • the display section displays various information according to control instructions from the control section 6.
  • the display section is a liquid crystal display.
  • the storage unit 5 is a nonvolatile storage device.
  • the storage unit 5 is a nonvolatile memory such as a flash memory.
  • the control unit 6 centrally controls the image forming apparatus 100.
  • the control unit 6 includes a CPU 11, a ROM 12, and a RAM 13.
  • the CPU 11 is a processor that executes various calculation processes.
  • the ROM 12 is a non-volatile storage device in which information such as control programs for causing the CPU 11 to execute various processes is stored in advance.
  • the RAM 13 is a volatile or non-volatile storage device used as a temporary storage memory (work area) for various processes executed by the CPU 11.
  • various control programs stored in advance in the ROM 12 are executed by the CPU 11. Thereby, the control unit 6 controls the image forming apparatus 100 in an integrated manner.
  • FIG. 2 is a sectional view showing the configuration of the post-processing device 3.
  • FIG. 3 is a plan view showing the configuration of the paper discharge tray 31.
  • FIG. 4 is a side view showing the structure of the right inner wall 29.
  • the common conveyance path 22 and the individual conveyance path 23 are each shown by a two-dot chain line.
  • the vertical direction is defined as the vertical direction D1 when the post-processing device 3 is installed in a usable state (the state shown in FIG. 2).
  • the front-rear direction D2 is defined with the left side surface of the post-processing device 3 shown in FIG. 2 as the front (front surface).
  • a left-right direction D3 is defined with the front of the post-processing device 3 in the installed state as a reference.
  • the post-processing device 3 includes a housing 21, a common conveyance path 22, a plurality of individual conveyance paths 23 (23A to 23D), a plurality of discharge ports 24 (24A to 24D), and a plurality of mounting parts. 25 (25A to 25D), and a plurality of paper discharge trays 31 (31A to 31D).
  • the post-processing device 3 is an example of a sheet discharging device of the present invention.
  • the post-processing device 3 includes four discharge ports 24. Further, as shown in FIG. 2, the individual conveyance path 23, the mounting section 25, and the paper ejection tray 31 are provided corresponding to the ejection port 24. That is, the post-processing device 3 includes the same number of individual conveyance paths 23 as the number of discharge ports 24, mounting portions 25, and paper discharge trays 31. Note that the post-processing device 3 only needs to include an arbitrary number of discharge ports 24 of two or more.
  • the housing 21 is formed into a substantially rectangular parallelepiped shape. Inside the housing 21, a pair of inner walls 29 (see FIG. 2) are provided. Each of the inner walls 29 is a wall having a thickness in the left-right direction D3. The pair of inner walls 29 are provided facing each other in the left-right direction D3. Each of the inner walls 29 extends upward from the bottom of the housing 21 to above the discharge port 24A located at the top of the plurality of discharge ports 24. A plurality of paper discharge trays 31 are provided between the pair of inner walls 29 .
  • the plurality of discharge ports 24 are arranged in line along the vertical direction, and sheets are discharged from each of them in the discharge direction D4 (see FIG. 2) along the horizontal direction. As shown in FIG. 2, a plurality of discharge ports 24 are formed on the front surface of the housing 21. Each of the discharge ports 24 is elongated in the left-right direction D3 and opens toward the front side (discharge direction D4).
  • the common conveyance path 22 is a sheet movement path provided inside the casing 21.
  • the common conveyance path 22 extends upward from the bottom of the housing 21 . In the common conveyance path 22, the sheet conveyed to the housing 21 by the sheet conveyance section 2 is conveyed upward.
  • Each of the plurality of individual conveyance paths 23 is a sheet movement path provided inside the casing 21.
  • the plurality of individual conveyance paths 23 are provided corresponding to the plurality of discharge ports 24.
  • the individual conveyance path 23A extends from the common conveyance path 22 to the discharge port 24A.
  • the individual conveyance path 23B extends from the common conveyance path 22 to the discharge port 24B.
  • the individual conveyance path 23C extends from the common conveyance path 22 to the discharge port 24C.
  • the individual conveyance path 23D extends from the common conveyance path 22 to the discharge port 24D.
  • the plurality of paper ejection trays 31 are provided corresponding to the plurality of ejection ports 24.
  • Each of the paper ejection trays 31 is provided downstream of the ejection port 24 in the ejection direction D4 so as to be inclined with respect to the ejection direction D4, and supports the sheet ejected from the ejection port 24.
  • the plurality of mounting parts 25 are provided corresponding to the plurality of discharge ports 24, and the paper discharge tray 31 is attached to and detached from each of them.
  • Each mounting section 25 detachably supports a paper discharge tray 31.
  • the mounting portion 25A is provided between the outlet 24A and the outlet 24B.
  • a paper discharge tray 31A is attached to and detached from the attachment portion 25A.
  • the mounting portion 25B is provided between the discharge port 24B and the discharge port 24C.
  • a paper discharge tray 31B is attached to and detached from the attachment portion 25B.
  • the mounting portion 25C is provided between the outlet 24C and the outlet 24D.
  • a paper discharge tray 31C is attached to and detached from the attachment portion 25C.
  • the mounting portion 25D is provided below the discharge port 24D.
  • a paper discharge tray 31D is attached to and detached from the mounting portion 25D.
  • the post-processing device 3 may be shared by an electrophotographic image forming apparatus and an inkjet image forming apparatus.
  • the sheet ejected by the post-processing device 3 is a sheet on which an image has been formed using an electrophotographic method, the sheets ejected to the paper ejection tray 31 are prevented from being uneven in the ejection direction D4. Therefore, it is desirable to increase the inclination angle of the paper ejection tray 31 with respect to the ejection direction D4 (a plane parallel to the ejection direction D4).
  • the sheet ejected by the post-processing device 3 is a sheet on which an image has been formed using an inkjet method
  • the post-processing device 3 with an angle adjustment mechanism that can vary the inclination angle of the paper ejection tray 31 with respect to the ejection direction D4.
  • each paper discharge tray 31 includes a sheet support section 32 and a pair of protrusions 33.
  • the sheet support section 32 supports the sheet discharged from the discharge port 24 on the downstream side of the discharge port 24 in the discharge direction D4.
  • the seat support section 32 includes a bottom plate section 32A, a pair of side wall sections 32B, and a rear wall section 32C.
  • the bottom plate portion 32A has a width in the left-right direction D3 and is formed in a flat plate shape that is elongated in a direction orthogonal to the left-right direction D3.
  • the bottom plate section 32A is inclined upward along the discharge direction D4.
  • the sheets discharged from the discharge port 24 are stacked on the upper surface of the bottom plate portion 32A.
  • each of the side wall portions 32B is erected along the end portion of the bottom plate portion 32A in the left-right direction D3.
  • the pair of side wall portions 32B restrict movement of the sheets stacked on the bottom plate portion 32A in the left-right direction D3.
  • each of the side wall portions 32B is formed such that the protrusion height from the bottom plate portion 32A decreases continuously along the discharge direction D4.
  • the rear wall portion 32C is erected along the upstream end of the bottom plate portion 32A in the discharge direction D4.
  • the rear wall portion 32C prevents the sheets stacked on the bottom plate portion 32A from moving upstream in the discharge direction D4.
  • the rear wall portion 32C is formed so that the protrusion height from the bottom plate portion 32A is the same as the upstream end of the pair of side wall portions 32B in the discharge direction D4.
  • the pair of protruding parts 33 are the upstream end of the sheet support part 32 in the discharging direction D4, and protrude outward in the width direction from both sides in the width direction (horizontal direction D3) perpendicular to the discharging direction D4. do.
  • the pair of protrusions 33 are provided at the upstream ends of the pair of side walls 32B in the discharge direction D4.
  • each of the protrusions 33 is formed in a cylindrical shape that protrudes from the side wall 32B.
  • each mounting section 25 includes a wall section 61, a plurality of holes 62, and a tray support section 63.
  • the wall portion 61 faces the side portions of the seat support portion 32 in the width direction (left-right direction D3).
  • Each of the mounting portions 25 includes a pair of wall portions 61 facing both sides of the seat support portion 32 in the width direction (horizontal direction D3).
  • the pair of wall portions 61 are portions of the pair of inner walls 29 that sandwich the seat support portion 32 .
  • the plurality of holes 62 are arranged in the wall 61 along the discharge direction D4, and each hole is formed so that the protrusion 33 can be inserted therethrough.
  • the plurality of holes 62 are formed in each of the pair of wall parts 61.
  • Each of the holes 62 may be a through hole that penetrates the wall 61, or may be a hole that does not penetrate the wall 61.
  • the plurality of holes 62 include a first hole 62A and a second hole 62B located downstream of the first hole 62A in the discharge direction D4.
  • the paper discharge tray 31 is formed of an elastic member such as synthetic resin.
  • the pair of protrusions 33 are accommodated inside the pair of walls 61 by the pair of side walls 32B being elastically deformed inward in the left-right direction D3, and the pair of protrusions 33 are accommodated in the pair of first holes 62A or the pair of first holes 62A. is inserted into the second hole 62B.
  • the tray support section 63 supports the paper discharge tray 31 in which the protruding part 33 is inserted into any one of the plurality of holes 62 from the lower side of the paper discharge tray 31 in the discharge direction D4 of each of the paper discharge trays 31 corresponding to the plurality of holes 62.
  • the mounting posture is supported in the mounting posture corresponding to the hole 62 through which the protrusion 33 is inserted.
  • the tray support section 63 supports the paper discharge tray 31, in which the pair of protrusions 33 are inserted into the pair of first holes 62A, in a first mounting posture corresponding to the first holes 62A. Further, the tray support section 63 supports the paper discharge tray 31, in which the pair of protrusions 33 are inserted into the pair of second holes 62B, in a second mounting posture corresponding to the second holes 62B.
  • the second mounting posture is a mounting posture in which the inclination angle of the paper discharge tray 31 with respect to the discharge direction D4 is smaller than that of the first mounting posture.
  • FIG. 4 shows the paper discharge tray 31C mounted on the mounting section 25C in the first mounting posture. Further, FIG. 4 shows the paper discharge tray 31D mounted on the mounting section 25D in the second mounting posture.
  • the tray support portion 63 has a first surface 64A facing the discharge direction D4 on the downstream side of the second hole portion 62B in the discharge direction D4, and a first surface 64A facing the discharge direction D4 further than the first surface 64A. It has a corner portion 64 formed by a second surface 64B facing upward on the upstream side of the.
  • the tray support portion 63 includes a first flat portion having a first surface 64A and having a thickness in the ejection direction D4, and a second flat portion having a second surface 64B and having a thickness in the vertical direction D1. It is a member that is elongated in the left-right direction D3 and has a corner portion 64. Both end portions of the tray support portion 63 in the left-right direction D3 are supported by a pair of wall portions 61.
  • the paper discharge tray 31 has a step portion 34 that comes into contact with the corner portion 64 when the protrusion portion 33 is inserted into the second hole portion 62B.
  • the stepped portion 34 is formed at the bottom of the sheet support portion 32 on the upstream side in the discharge direction D4.
  • the stepped portion 34 has a first contact surface and a second contact surface.
  • the first contact surface is a plane that contacts the first surface 64A when the protrusion 33 is inserted into the second hole 62B.
  • the first contact surface forms a corner with the bottom surface 32D (see FIG. 4) of the seat support portion 32.
  • the second contact surface is a plane that contacts the second surface 64B when the protrusion 33 is inserted into the second hole 62B.
  • the second contact surface forms a corner with the first contact surface.
  • the step portion 34 is elongated in the left-right direction D3.
  • the corner portion 64 of the tray support portion 63 comes into contact with the stepped portion 34 of the paper discharge tray 31 (see paper discharge tray 31D shown in FIG. 4) in which the protrusion 33 is inserted into the second hole 62B, and the protrusion Rotation of the paper discharge tray 31 about the center 33 is locked. As a result, the paper discharge tray 31 is supported in the first mounting position.
  • the second surface 64B of the tray support section 63 makes the first contact with the bottom surface 32D of the paper discharge tray 31 (see paper discharge tray 31C shown in FIG. 4) in which the protrusion 33 is inserted into the first hole 62A.
  • the sheet discharge tray 31 is stopped from rotating around the protrusion 33 by contacting the corner formed by the surface.
  • the paper discharge tray 31 is supported in the second mounting position.
  • the corner formed by the bottom surface 32D and the first contact surface is configured so that it can come into surface contact with the second surface 64B when the paper ejection tray 31 is supported in the second mounting posture. Preferably chamfered.
  • the tray support portion 63 includes a protrusion 65 protruding from the second surface 64B.
  • the raised portion 65 is formed below the first hole 62A along the left-right direction D3.
  • the protrusion 65 contacts the back surface 32E (see FIG. 4) of the paper discharge tray 31 (see paper discharge tray 31C shown in FIG. 4) in which the protrusion 33 is inserted into the first hole 62A, and the protrusion 33 is inserted into the first hole 62A.
  • the rotation of the paper discharge tray 31 about the center is stopped. As a result, the paper discharge tray 31 is supported at two points, so that the posture of the paper discharge tray 31 is stabilized.
  • the paper ejection tray 31 is attached to each of the mounting sections 25 such that the higher the position of the paper ejection tray 31, the greater the inclination angle of the paper ejection tray 31 with respect to the ejection direction D4. .
  • This avoids narrowing of the access space for sheets discharged to the lower paper discharge tray 31, which is formed between two paper discharge trays 31 that are continuous in the vertical direction D1. Therefore, it is possible to avoid making it difficult for the user to access the sheets discharged to the paper discharge tray 31.
  • the user of the image forming apparatus 100 attaches the paper ejection tray 31 to each mounting section 25 so that the higher the position of the paper ejection tray 31 is, the greater the inclination angle of the paper ejection tray 31 with respect to the ejection direction D4.
  • the step of mounting is an example of the mounting step included in the method of using the sheet discharging device of the present invention.
  • the image forming apparatus 100 includes a plurality of holes 62 that are arranged in the wall portion 61 along the discharge direction D4, and each of the holes 62 is formed so that the protrusion portion 33 can be inserted therethrough. Further, the image forming apparatus 100 ejects the paper ejection trays 31 each having the protrusion 33 inserted into one of the plurality of holes 62 from the lower side of the paper ejection tray 31 to each other corresponding to the plurality of holes 62.
  • a tray support portion 63 is provided to support the tray in the mounting posture corresponding to the hole 62 through which the protrusion 33 is inserted among the plurality of mounting postures having different inclination angles with respect to the direction D4. As a result, it is possible to change the inclination angle of the paper discharge tray 31 with a simpler configuration compared to the apparatus provided with the angle adjustment mechanism.
  • the image forming apparatus 100 also includes a first surface 64A facing the discharge direction D4 on the downstream side of the second hole 62B in the discharge direction D4, and a first surface 64A facing upward in the discharge direction D4 on the upstream side of the first surface 64A.
  • the tray support portion 63 has a corner portion 64 formed by two surfaces 64B.
  • the image forming apparatus 100 also includes a paper discharge tray 31 having a stepped portion 34 that contacts the corner portion 64 when the protruding portion 33 is inserted into the second hole portion 62B. Thereby, the shape of the tray support part 63 can be simplified compared to a configuration in which the tray support part 63 has a plurality of tray support shapes 66 (see FIG. 5) corresponding to the plurality of mounting positions.
  • the tray support section 63 may include a plurality of tray support shapes 66 corresponding to the plurality of mounting positions.
  • Each of the tray support shapes 66 may have any shape as long as it can support the upstream end of the paper ejection tray 31 in the discharge direction D4 in the mounting attitude corresponding to the tray support shape 66.
  • the number of holes 62 may be three or more.
  • the present invention may be applied to an image forming apparatus 100 that includes a sheet ejection device including one ejection port 24 and a paper ejection tray 31 corresponding to the ejection port 24 instead of the post-processing device 3. .
  • the sheet discharged by the sheet discharge device of the present invention is not limited to a sheet on which an image is formed, but may be a sheet on which an image has been read by a scanner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)

Abstract

An image formation device (100) comprises: an ejected sheet tray (31) including a sheet support portion (32) that supports a sheet and a projecting portion (33) that is an end portion upstream of the sheet support portion (32) in an ejection direction D4 and projects from a side portion in a width direction orthogonal to the ejection direction D4 toward the outside in the width direction; and a mounting portion (25) where the ejected sheet tray (31) is attached and detached. The mounting portion (25) includes a plurality of hole portions (62) that are provided side by side in the ejection direction D4 and are each formed so that the projecting portion (33) can be inserted therein, and a tray support portion (63) that supports the ejected sheet tray (31) with the projecting portion (33) inserted into any one of the plurality of hole portions (62) in a mounting posture at an inclination angle corresponding to the hole portion (62).

Description

シート排出装置、画像形成装置、シート排出装置の使用方法How to use the sheet ejecting device, image forming device, and sheet ejecting device
　本発明は、シート排出装置、画像形成装置、及びシート排出装置の使用方法に関する。 The present invention relates to a sheet discharging device, an image forming device, and a method of using the sheet discharging device.
　プリンターなどの画像形成装置は、画像が形成されたシートを排出するシート排出装置を備える。例えば、前記シート排出装置は、排出口と、排紙トレイとを備える（例えば、特許文献１参照）。前記排出口では、水平方向に沿った排出方向へシートが排出される。前記排紙トレイは、前記排出口よりも前記排出方向の下流側で前記排出方向に対して傾斜して設けられ、前記排出口から排出されるシートを支持する。 An image forming apparatus such as a printer includes a sheet ejecting device that ejects a sheet on which an image is formed. For example, the sheet discharge device includes a discharge port and a paper discharge tray (see, for example, Patent Document 1). At the discharge port, the sheet is discharged in a horizontal discharge direction. The paper ejection tray is provided downstream of the ejection port in the ejection direction and is inclined with respect to the ejection direction, and supports the sheet ejected from the ejection port.
特開平７－２０６２５０号公報Japanese Patent Application Publication No. 7-206250
　ところで、前記シート排出装置は、電子写真方式の画像形成装置と、インクジェット方式の画像形成装置とで共用されることがある。ここで、前記シート排出装置によって排出されるシートが電子写真方式で画像を形成されたシートである場合には、前記排紙トレイに排出されたシートが不揃いとなることを抑制するために、前記排紙トレイの前記排出方向に対する傾斜角度を大きくすることが望ましい。一方、前記シート排出装置によって排出されるシートがインクジェット方式で画像を形成されたシートである場合には、当該シートの排出中に当該シートが凸状に湾曲することを抑制するために、前記排紙トレイの前記排出方向に対する傾斜角度を小さくすることが望ましい。 Incidentally, the sheet discharging device is sometimes shared by an electrophotographic image forming apparatus and an inkjet image forming apparatus. Here, if the sheet ejected by the sheet ejecting device is a sheet on which an image has been formed using an electrophotographic method, in order to prevent the sheets ejected to the paper ejecting tray from being uneven, It is desirable to increase the inclination angle of the paper ejection tray with respect to the ejection direction. On the other hand, when the sheet ejected by the sheet ejecting device is a sheet on which an image has been formed using an inkjet method, the ejector It is desirable to reduce the inclination angle of the paper tray with respect to the ejection direction.
　ここで、前記シート排出装置に、前記排紙トレイの前記排出方向に対する傾斜角度を可変可能な角度調整機構を設けることが考えられる。 Here, it is conceivable that the sheet discharging device is provided with an angle adjustment mechanism that can vary the inclination angle of the sheet discharging tray with respect to the discharging direction.
　しかしながら、前記シート排出装置に前記角度調整機構を設ける場合には、前記シート排出装置の構成が複雑化する。 However, when the angle adjustment mechanism is provided in the sheet ejecting device, the configuration of the sheet ejecting device becomes complicated.
　本発明の目的は、簡素な構成で排紙トレイの傾斜角度を切替可能なシート排出装置、画像形成装置、及びシート排出装置の使用方法を提供することにある。 An object of the present invention is to provide a sheet discharging device, an image forming apparatus, and a method of using the sheet discharging device that can switch the inclination angle of a paper discharging tray with a simple configuration.
　本発明の一の局面に係るシート排出装置は、排出口と、排紙トレイと、装着部とを備える。前記排出口では、水平方向に沿った排出方向へシートが排出される。前記排紙トレイは、前記排出口よりも前記排出方向の下流側で前記排出口から排出される前記シートを支持するシート支持部、及び前記シート支持部における前記排出方向の上流側の端部であって前記排出方向と直交する幅方向の側部から前記幅方向の外側へ向けて突出する突出部を有する。前記装着部には、前記排紙トレイが着脱される。また、前記装着部は、壁部と、複数の孔部と、トレイ支持部とを備える。前記壁部は、前記シート支持部の前記側部と対向する。複数の前記孔部は、前記壁部において前記排出方向に沿って並んで設けられ、それぞれが前記突出部を挿通可能に形成される。前記トレイ支持部は、複数の前記孔部のいずれかに前記突出部が挿通された前記排紙トレイを当該排紙トレイの下側から複数の前記孔部に対応する互いに前記排出方向に対する傾斜角度が異なる複数の装着姿勢のうち前記突出部が挿通された前記孔部に対応する前記装着姿勢で支持する。 A sheet discharge device according to one aspect of the present invention includes a discharge port, a paper discharge tray, and a mounting section. At the discharge port, the sheet is discharged in a horizontal discharge direction. The paper ejection tray includes a sheet support portion that supports the sheet ejected from the ejection port on a downstream side of the ejection port in the ejection direction, and an end portion of the sheet support portion on the upstream side in the ejection direction. It has a protrusion that protrudes outward in the width direction from a side portion in the width direction perpendicular to the discharge direction. The paper ejection tray is attached to and detached from the attachment section. Further, the mounting section includes a wall section, a plurality of holes, and a tray support section. The wall portion faces the side portion of the seat support portion. The plurality of holes are arranged in the wall along the discharge direction, and each hole is formed so as to be inserted through the protrusion. The tray support section moves the paper ejection tray, in which the protrusion is inserted into one of the plurality of holes, from the lower side of the paper ejection tray at an inclination angle with respect to the ejection direction corresponding to the plurality of holes. Among a plurality of different mounting positions, the mounting position is supported in a position corresponding to the hole through which the protrusion is inserted.
　本発明の他の局面に係る画像形成装置は、画像形成部と、前記シート排出装置とを備える。前記画像形成部は、前記シートに画像を形成する。前記シート排出装置は、前記画像形成部によって画像が形成された前記シートを排出する。 An image forming apparatus according to another aspect of the present invention includes an image forming section and the sheet discharging device. The image forming section forms an image on the sheet. The sheet discharge device discharges the sheet on which an image has been formed by the image forming section.
　本発明の他の局面に係るシート排出装置の使用方法は、鉛直方向に沿って並ぶ複数の前記排出口と、複数の前記排出口に対応する複数の前記排紙トレイと、複数の前記排出口に対応する複数の前記装着部と、を備える前記シート排出装置を用いて実行され、装着ステップを含む。前記装着ステップでは、前記排紙トレイの位置が上であるほど前記排出方向に対する前記排紙トレイの傾斜角度が大きくなるように、前記装着部各々に前記排紙トレイが装着される。 A method of using a sheet discharging device according to another aspect of the present invention includes a plurality of the discharge ports arranged in a vertical direction, a plurality of the paper discharge trays corresponding to the plurality of discharge ports, and a plurality of the discharge ports. and a plurality of the mounting sections corresponding to the sheet discharging device, and includes a mounting step. In the mounting step, the paper ejection tray is mounted on each of the mounting portions such that the higher the position of the paper ejection tray, the greater the inclination angle of the paper ejection tray with respect to the ejection direction.
　本発明によれば、簡素な構成で排紙トレイの傾斜角度を切り替えることが可能である。 According to the present invention, it is possible to switch the inclination angle of the paper discharge tray with a simple configuration.
図１は、本発明の実施形態に係る画像形成装置の構成を示す図である。FIG. 1 is a diagram showing the configuration of an image forming apparatus according to an embodiment of the present invention. 図２は、本発明の実施形態に係る画像形成装置の後処理装置の構成を示す図である。FIG. 2 is a diagram showing the configuration of a post-processing device of an image forming apparatus according to an embodiment of the present invention. 図３は、本発明の実施形態に係る画像形成装置の排紙トレイの構成を示す図である。FIG. 3 is a diagram showing the configuration of a paper discharge tray of an image forming apparatus according to an embodiment of the present invention. 図４は、本発明の実施形態に係る画像形成装置の装着部の構成を示す図である。FIG. 4 is a diagram showing the configuration of the mounting section of the image forming apparatus according to the embodiment of the present invention. 図５は、本発明の実施形態に係る画像形成装置の装着部の変形例を示す図である。FIG. 5 is a diagram showing a modification of the mounting section of the image forming apparatus according to the embodiment of the present invention.
　以下、添付図面を参照しながら、本発明の実施形態について説明する。なお、以下の実施形態は、本発明を具体化した一例であって、本発明の技術的範囲を限定するものではない。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Note that the following embodiments are examples of embodying the present invention, and do not limit the technical scope of the present invention.
［画像形成装置１００の構成］
　まず、図１を参照しつつ、本発明の実施形態に係る画像形成装置１００の構成について説明する。ここで、図１は画像形成装置１００のシステム構成を示すブロック図である。 [Configuration of image forming apparatus 100]
First, the configuration of an image forming apparatus 100 according to an embodiment of the present invention will be described with reference to FIG. 1. Here, FIG. 1 is a block diagram showing the system configuration of an image forming apparatus 100.
　画像形成装置１００は、画像データに基づいてシートに画像を形成するプリント機能を有するプリンターである。なお、本発明は、ファクス装置、コピー機、及び複合機などの画像形成装置に適用可能である。 The image forming apparatus 100 is a printer that has a print function that forms an image on a sheet based on image data. Note that the present invention is applicable to image forming apparatuses such as fax machines, copy machines, and multifunction devices.
　図１に示されるように、画像形成装置１００は、画像形成部１、シート搬送部２、後処理装置３、操作表示部４、記憶部５、及び制御部６を備える。 As shown in FIG. 1, the image forming apparatus 100 includes an image forming section 1, a sheet transport section 2, a post-processing device 3, an operation display section 4, a storage section 5, and a control section 6.
　画像形成部１は、前記プリント機能を実現する。例えば、画像形成部１は、インクジェット方式で画像を形成する。画像形成部１は、シートへ向けてインクを吐出する記録ヘッドを備える。画像形成部１は、シート搬送部２によって搬送されるシートに画像を形成する。なお、画像形成部１は、電子写真方式などのインクジェット方式とは異なる画像形成方式で画像を形成してもよい。 The image forming unit 1 realizes the printing function. For example, the image forming section 1 forms an image using an inkjet method. The image forming section 1 includes a recording head that ejects ink toward a sheet. The image forming section 1 forms an image on a sheet conveyed by the sheet conveying section 2. Note that the image forming section 1 may form an image using an image forming method different from an inkjet method such as an electrophotographic method.
　シート搬送部２は、給紙カセットに収容されたシートを、画像形成部１による画像形成位置を経由して後処理装置３へ搬送する。シート搬送部２は、前記給紙カセット、及び複数の搬送ローラーを備える。 The sheet transport unit 2 transports the sheets stored in the paper feed cassette to the post-processing device 3 via the image forming position by the image forming unit 1. The sheet conveyance unit 2 includes the paper feed cassette and a plurality of conveyance rollers.
　後処理装置３は、シート搬送部２によって搬送されるシートを仕分けるソート機能を実現する。後処理装置３は、画像形成部１によって画像が形成されたシートを排出する。 The post-processing device 3 realizes a sorting function for sorting the sheets conveyed by the sheet conveyance section 2. The post-processing device 3 discharges the sheet on which the image has been formed by the image forming section 1 .
　操作表示部４は、画像形成装置１００のユーザーインターフェイスである。操作表示部４は、操作部、及び表示部を有する。前記操作部は、ユーザーの操作に応じて制御部６に各種の情報を入力する。例えば、前記操作部は、操作キー、又はタッチパネルである。前記表示部は、制御部６からの制御指示に応じて各種の情報を表示する。例えば、前記表示部は、液晶ディスプレーである。 The operation display unit 4 is a user interface of the image forming apparatus 100. The operation display section 4 includes an operation section and a display section. The operation section inputs various information to the control section 6 according to user's operations. For example, the operation unit is an operation key or a touch panel. The display section displays various information according to control instructions from the control section 6. For example, the display section is a liquid crystal display.
　記憶部５は、不揮発性の記憶装置である。例えば、記憶部５は、フラッシュメモリーなどの不揮発性メモリーである。 The storage unit 5 is a nonvolatile storage device. For example, the storage unit 5 is a nonvolatile memory such as a flash memory.
　制御部６は、画像形成装置１００を統括的に制御する。図１に示されるように、制御部６は、ＣＰＵ１１、ＲＯＭ１２、及びＲＡＭ１３を備える。ＣＰＵ１１は、各種の演算処理を実行するプロセッサーである。ＲＯＭ１２は、ＣＰＵ１１に各種の処理を実行させるための制御プログラムなどの情報が予め格納される不揮発性の記憶装置である。ＲＡＭ１３は、ＣＰＵ１１が実行する各種の処理の一時記憶メモリー（作業領域）として使用される揮発性、又は不揮発性の記憶装置である。制御部６では、ＣＰＵ１１によりＲＯＭ１２に予め格納された各種の制御プログラムが実行される。これにより、制御部６は、画像形成装置１００を統括的に制御する。 The control unit 6 centrally controls the image forming apparatus 100. As shown in FIG. 1, the control unit 6 includes a CPU 11, a ROM 12, and a RAM 13. The CPU 11 is a processor that executes various calculation processes. The ROM 12 is a non-volatile storage device in which information such as control programs for causing the CPU 11 to execute various processes is stored in advance. The RAM 13 is a volatile or non-volatile storage device used as a temporary storage memory (work area) for various processes executed by the CPU 11. In the control unit 6, various control programs stored in advance in the ROM 12 are executed by the CPU 11. Thereby, the control unit 6 controls the image forming apparatus 100 in an integrated manner.
［後処理装置３の構成］
　次に、図２～図４を参照しつつ、後処理装置３の構成について説明する。ここで、図２は後処理装置３の構成を示す断面図である。また、図３は排紙トレイ３１の構成を示す平面図である。また、図４は右側の内壁２９の構成を示す側面図である。なお、図２では、共通搬送路２２、及び個別搬送路２３が、それぞれ二点鎖線によって示されている。 [Configuration of post-processing device 3]
Next, the configuration of the post-processing device 3 will be explained with reference to FIGS. 2 to 4. Here, FIG. 2 is a sectional view showing the configuration of the post-processing device 3. As shown in FIG. Further, FIG. 3 is a plan view showing the configuration of the paper discharge tray 31. As shown in FIG. Further, FIG. 4 is a side view showing the structure of the right inner wall 29. As shown in FIG. In addition, in FIG. 2, the common conveyance path 22 and the individual conveyance path 23 are each shown by a two-dot chain line.
　なお、説明の便宜上、後処理装置３が使用可能な設置状態（図２に示される状態）で鉛直方向を上下方向Ｄ１と定義する。また、図２に示される後処理装置３の紙面左側の面を正面（前面）として前後方向Ｄ２を定義する。また、前記設置状態の後処理装置３の正面を基準として左右方向Ｄ３を定義する。 For convenience of explanation, the vertical direction is defined as the vertical direction D1 when the post-processing device 3 is installed in a usable state (the state shown in FIG. 2). Further, the front-rear direction D2 is defined with the left side surface of the post-processing device 3 shown in FIG. 2 as the front (front surface). Further, a left-right direction D3 is defined with the front of the post-processing device 3 in the installed state as a reference.
　図２に示されるように、後処理装置３は、筐体２１、共通搬送路２２、複数の個別搬送路２３（２３Ａ～２３Ｄ）、複数の排出口２４（２４Ａ～２４Ｄ）、複数の装着部２５（２５Ａ～２５Ｄ）、及び複数の排紙トレイ３１（３１Ａ～３１Ｄ）を備える。後処理装置３は、本発明のシート排出装置の一例である。 As shown in FIG. 2, the post-processing device 3 includes a housing 21, a common conveyance path 22, a plurality of individual conveyance paths 23 (23A to 23D), a plurality of discharge ports 24 (24A to 24D), and a plurality of mounting parts. 25 (25A to 25D), and a plurality of paper discharge trays 31 (31A to 31D). The post-processing device 3 is an example of a sheet discharging device of the present invention.
　図２に示されるように、後処理装置３は、４つの排出口２４を備える。また、図２に示されるように、個別搬送路２３、装着部２５、及び排紙トレイ３１は、排出口２４に対応して設けられる。つまり、後処理装置３は、排出口２４と同数の個別搬送路２３、装着部２５、及び排紙トレイ３１を備える。なお、後処理装置３は、２以上の任意の数の排出口２４を備えていればよい。 As shown in FIG. 2, the post-processing device 3 includes four discharge ports 24. Further, as shown in FIG. 2, the individual conveyance path 23, the mounting section 25, and the paper ejection tray 31 are provided corresponding to the ejection port 24. That is, the post-processing device 3 includes the same number of individual conveyance paths 23 as the number of discharge ports 24, mounting portions 25, and paper discharge trays 31. Note that the post-processing device 3 only needs to include an arbitrary number of discharge ports 24 of two or more.
　筐体２１は、略直方体状に形成される。筐体２１の内部には、一対の内壁２９（図２参照）が設けられる。内壁２９各々は、左右方向Ｄ３に厚みを有する壁である。一対の内壁２９は、左右方向Ｄ３に対向して設けられる。内壁２９各々は、筐体２１の底部から上方向へ、複数の排出口２４のうち一番上に位置する排出口２４Ａよりも上まで延びている。一対の内壁２９の間には、複数の排紙トレイ３１が設けられる。 The housing 21 is formed into a substantially rectangular parallelepiped shape. Inside the housing 21, a pair of inner walls 29 (see FIG. 2) are provided. Each of the inner walls 29 is a wall having a thickness in the left-right direction D3. The pair of inner walls 29 are provided facing each other in the left-right direction D3. Each of the inner walls 29 extends upward from the bottom of the housing 21 to above the discharge port 24A located at the top of the plurality of discharge ports 24. A plurality of paper discharge trays 31 are provided between the pair of inner walls 29 .
　複数の排出口２４は、鉛直方向に沿って並んで設けられ、それぞれにおいて水平方向に沿った排出方向Ｄ４（図２参照）へシートが排出される。図２に示されるように、複数の排出口２４は、筐体２１の前面に形成される。排出口２４各々は、左右方向Ｄ３に長尺であって、前方側（排出方向Ｄ４）へ向けて開口する。 The plurality of discharge ports 24 are arranged in line along the vertical direction, and sheets are discharged from each of them in the discharge direction D4 (see FIG. 2) along the horizontal direction. As shown in FIG. 2, a plurality of discharge ports 24 are formed on the front surface of the housing 21. Each of the discharge ports 24 is elongated in the left-right direction D3 and opens toward the front side (discharge direction D4).
　共通搬送路２２は、筐体２１の内部に設けられるシートの移動通路である。共通搬送路２２は、筐体２１の底部から上方向へ延びている。共通搬送路２２では、シート搬送部２によって筐体２１へ搬送されたシートが上方向へ搬送される。 The common conveyance path 22 is a sheet movement path provided inside the casing 21. The common conveyance path 22 extends upward from the bottom of the housing 21 . In the common conveyance path 22, the sheet conveyed to the housing 21 by the sheet conveyance section 2 is conveyed upward.
　複数の個別搬送路２３は、それぞれが筐体２１の内部に設けられるシートの移動通路である。複数の個別搬送路２３は、複数の排出口２４に対応して設けられる。図２に示されるように、個別搬送路２３Ａは、共通搬送路２２から排出口２４Ａまで延びている。個別搬送路２３Ｂは、共通搬送路２２から排出口２４Ｂまで延びている。個別搬送路２３Ｃは、共通搬送路２２から排出口２４Ｃまで延びている。個別搬送路２３Ｄは、共通搬送路２２から排出口２４Ｄまで延びている。 Each of the plurality of individual conveyance paths 23 is a sheet movement path provided inside the casing 21. The plurality of individual conveyance paths 23 are provided corresponding to the plurality of discharge ports 24. As shown in FIG. 2, the individual conveyance path 23A extends from the common conveyance path 22 to the discharge port 24A. The individual conveyance path 23B extends from the common conveyance path 22 to the discharge port 24B. The individual conveyance path 23C extends from the common conveyance path 22 to the discharge port 24C. The individual conveyance path 23D extends from the common conveyance path 22 to the discharge port 24D.
　複数の排紙トレイ３１は、複数の排出口２４に対応して設けられる。排紙トレイ３１各々は、排出口２４よりも排出方向Ｄ４の下流側で排出方向Ｄ４に対して傾斜する姿勢で設けられ、排出口２４から排出されるシートを支持する。 The plurality of paper ejection trays 31 are provided corresponding to the plurality of ejection ports 24. Each of the paper ejection trays 31 is provided downstream of the ejection port 24 in the ejection direction D4 so as to be inclined with respect to the ejection direction D4, and supports the sheet ejected from the ejection port 24.
　複数の装着部２５は、複数の排出口２４に対応して設けられ、それぞれに排紙トレイ３１が着脱される。装着部２５各々は、排紙トレイ３１を着脱可能に支持する。 The plurality of mounting parts 25 are provided corresponding to the plurality of discharge ports 24, and the paper discharge tray 31 is attached to and detached from each of them. Each mounting section 25 detachably supports a paper discharge tray 31.
　図２に示されるように、装着部２５Ａは、排出口２４Ａと排出口２４Ｂとの間に設けられる。装着部２５Ａには、排紙トレイ３１Ａが着脱される。装着部２５Ｂは、排出口２４Ｂと排出口２４Ｃとの間に設けられる。装着部２５Ｂには、排紙トレイ３１Ｂが着脱される。装着部２５Ｃは、排出口２４Ｃと排出口２４Ｄとの間に設けられる。装着部２５Ｃには、排紙トレイ３１Ｃが着脱される。装着部２５Ｄは、排出口２４Ｄの下側に設けられる。装着部２５Ｄには、排紙トレイ３１Ｄが着脱される。 As shown in FIG. 2, the mounting portion 25A is provided between the outlet 24A and the outlet 24B. A paper discharge tray 31A is attached to and detached from the attachment portion 25A. The mounting portion 25B is provided between the discharge port 24B and the discharge port 24C. A paper discharge tray 31B is attached to and detached from the attachment portion 25B. The mounting portion 25C is provided between the outlet 24C and the outlet 24D. A paper discharge tray 31C is attached to and detached from the attachment portion 25C. The mounting portion 25D is provided below the discharge port 24D. A paper discharge tray 31D is attached to and detached from the mounting portion 25D.
　ところで、後処理装置３は、電子写真方式の画像形成装置と、インクジェット方式の画像形成装置とで共用されることがある。ここで、後処理装置３によって排出されるシートが電子写真方式で画像を形成されたシートである場合には、排紙トレイ３１に排出されたシートが排出方向Ｄ４に不揃いとなることを抑制するために、排紙トレイ３１の排出方向Ｄ４（排出方向Ｄ４と平行な平面）に対する傾斜角度を大きくすることが望ましい。一方、後処理装置３によって排出されるシートがインクジェット方式で画像を形成されたシートである場合には、当該シートの排出中に当該シートが凸状に湾曲することを抑制するために、排紙トレイ３１の排出方向Ｄ４に対する傾斜角度を小さくすることが望ましい。 Incidentally, the post-processing device 3 may be shared by an electrophotographic image forming apparatus and an inkjet image forming apparatus. Here, if the sheet ejected by the post-processing device 3 is a sheet on which an image has been formed using an electrophotographic method, the sheets ejected to the paper ejection tray 31 are prevented from being uneven in the ejection direction D4. Therefore, it is desirable to increase the inclination angle of the paper ejection tray 31 with respect to the ejection direction D4 (a plane parallel to the ejection direction D4). On the other hand, when the sheet ejected by the post-processing device 3 is a sheet on which an image has been formed using an inkjet method, in order to suppress the sheet from convexly curving while ejecting the sheet, It is desirable to reduce the inclination angle of the tray 31 with respect to the discharge direction D4.
　ここで、後処理装置３に、排紙トレイ３１の排出方向Ｄ４に対する傾斜角度を可変可能な角度調整機構を設けることが考えられる。 Here, it is conceivable to provide the post-processing device 3 with an angle adjustment mechanism that can vary the inclination angle of the paper ejection tray 31 with respect to the ejection direction D4.
　しかしながら、後処理装置３に前記角度調整機構を設ける場合には、後処理装置３の構成が複雑化する。 However, when the angle adjustment mechanism is provided in the post-processing device 3, the configuration of the post-processing device 3 becomes complicated.
　これに対し、本発明の実施形態に係る画像形成装置１００では、以下に説明するように、簡素な構成で排紙トレイ３１の傾斜角度を切り替えることが可能である。 In contrast, in the image forming apparatus 100 according to the embodiment of the present invention, it is possible to switch the inclination angle of the paper discharge tray 31 with a simple configuration, as described below.
　図３に示されるように、排紙トレイ３１各々は、シート支持部３２、及び一対の突出部３３を備える。 As shown in FIG. 3, each paper discharge tray 31 includes a sheet support section 32 and a pair of protrusions 33.
　シート支持部３２は、排出口２４よりも排出方向Ｄ４の下流側で排出口２４から排出されるシートを支持する。図３に示されるように、シート支持部３２は、底板部３２Ａ、一対の側壁部３２Ｂ、及び後壁部３２Ｃを備える。底板部３２Ａは、左右方向Ｄ３に幅を有し、左右方向Ｄ３と直交する方向に長尺な平板状に形成される。装着部２５に装着された排紙トレイ３１において、底板部３２Ａは、排出方向Ｄ４に沿って上方向へ傾斜する。底板部３２Ａの上面には、排出口２４から排出されたシートが積載される。底板部３２Ａの上面に積載されたシートは、傾斜する当該上面に沿って排出方向Ｄ４の上流側へ移動する。側壁部３２Ｂ各々は、底板部３２Ａにおける左右方向Ｄ３の端部に沿って立設される。一対の側壁部３２Ｂは、底板部３２Ａに積載されたシートの左右方向Ｄ３への移動を規制する。例えば、側壁部３２Ｂ各々は、底板部３２Ａからの突出高さが、排出方向Ｄ４に沿って連続的に低くなるように形成される。後壁部３２Ｃは、底板部３２Ａにおける排出方向Ｄ４の上流側の端部に沿って立設される。後壁部３２Ｃは、底板部３２Ａに積載されたシートの排出方向Ｄ４の上流側への移動を係止する。例えば、後壁部３２Ｃは、底板部３２Ａからの突出高さが、一対の側壁部３２Ｂにおける排出方向Ｄ４の上流側の端部と同じ高さとなるように形成される。 The sheet support section 32 supports the sheet discharged from the discharge port 24 on the downstream side of the discharge port 24 in the discharge direction D4. As shown in FIG. 3, the seat support section 32 includes a bottom plate section 32A, a pair of side wall sections 32B, and a rear wall section 32C. The bottom plate portion 32A has a width in the left-right direction D3 and is formed in a flat plate shape that is elongated in a direction orthogonal to the left-right direction D3. In the paper discharge tray 31 mounted on the mounting section 25, the bottom plate section 32A is inclined upward along the discharge direction D4. The sheets discharged from the discharge port 24 are stacked on the upper surface of the bottom plate portion 32A. The sheets stacked on the upper surface of the bottom plate portion 32A move toward the upstream side in the discharge direction D4 along the inclined upper surface. Each of the side wall portions 32B is erected along the end portion of the bottom plate portion 32A in the left-right direction D3. The pair of side wall portions 32B restrict movement of the sheets stacked on the bottom plate portion 32A in the left-right direction D3. For example, each of the side wall portions 32B is formed such that the protrusion height from the bottom plate portion 32A decreases continuously along the discharge direction D4. The rear wall portion 32C is erected along the upstream end of the bottom plate portion 32A in the discharge direction D4. The rear wall portion 32C prevents the sheets stacked on the bottom plate portion 32A from moving upstream in the discharge direction D4. For example, the rear wall portion 32C is formed so that the protrusion height from the bottom plate portion 32A is the same as the upstream end of the pair of side wall portions 32B in the discharge direction D4.
　一対の突出部３３は、シート支持部３２における排出方向Ｄ４の上流側の端部であって排出方向Ｄ４と直交する幅方向（左右方向Ｄ３）の両側部から当該幅方向の外側へ向けて突出する。具体的に、一対の突出部３３は、一対の側壁部３２Ｂにおける排出方向Ｄ４の上流側の端部に設けられる。例えば、突出部３３各々は、側壁部３２Ｂから円柱状に突出する形状で形成される。 The pair of protruding parts 33 are the upstream end of the sheet support part 32 in the discharging direction D4, and protrude outward in the width direction from both sides in the width direction (horizontal direction D3) perpendicular to the discharging direction D4. do. Specifically, the pair of protrusions 33 are provided at the upstream ends of the pair of side walls 32B in the discharge direction D4. For example, each of the protrusions 33 is formed in a cylindrical shape that protrudes from the side wall 32B.
　図４に示されるように、装着部２５各々は、壁部６１、複数の孔部６２、及びトレイ支持部６３を備える。 As shown in FIG. 4, each mounting section 25 includes a wall section 61, a plurality of holes 62, and a tray support section 63.
　壁部６１は、シート支持部３２における幅方向（左右方向Ｄ３）の側部と対向する。装着部２５各々は、シート支持部３２における幅方向（左右方向Ｄ３）の両側部と対向する一対の壁部６１を備える。具体的に、一対の壁部６１は、一対の内壁２９におけるシート支持部３２を挟む部分である。 The wall portion 61 faces the side portions of the seat support portion 32 in the width direction (left-right direction D3). Each of the mounting portions 25 includes a pair of wall portions 61 facing both sides of the seat support portion 32 in the width direction (horizontal direction D3). Specifically, the pair of wall portions 61 are portions of the pair of inner walls 29 that sandwich the seat support portion 32 .
　複数の孔部６２は、壁部６１において排出方向Ｄ４に沿って並んで設けられ、それぞれが突出部３３を挿通可能に形成される。複数の孔部６２は、一対の壁部６１のそれぞれに形成される。孔部６２各々は、壁部６１を貫通する貫通孔であってもよいし、壁部６１を貫通しない孔であってもよい。 The plurality of holes 62 are arranged in the wall 61 along the discharge direction D4, and each hole is formed so that the protrusion 33 can be inserted therethrough. The plurality of holes 62 are formed in each of the pair of wall parts 61. Each of the holes 62 may be a through hole that penetrates the wall 61, or may be a hole that does not penetrate the wall 61.
　図４に示されるように、複数の孔部６２は、第１孔部６２Ａ、及び第１孔部６２Ａよりも排出方向Ｄ４の下流側に位置する第２孔部６２Ｂを含む。 As shown in FIG. 4, the plurality of holes 62 include a first hole 62A and a second hole 62B located downstream of the first hole 62A in the discharge direction D4.
　例えば、排紙トレイ３１は、合成樹脂などの弾性を有する部材によって形成される。一対の突出部３３は、一対の側壁部３２Ｂが左右方向Ｄ３の内側へ向けて弾性変形されることにより、一対の壁部６１の内側に収められて、一対の第１孔部６２Ａ、又は一対の第２孔部６２Ｂに挿通される。 For example, the paper discharge tray 31 is formed of an elastic member such as synthetic resin. The pair of protrusions 33 are accommodated inside the pair of walls 61 by the pair of side walls 32B being elastically deformed inward in the left-right direction D3, and the pair of protrusions 33 are accommodated in the pair of first holes 62A or the pair of first holes 62A. is inserted into the second hole 62B.
　トレイ支持部６３は、複数の孔部６２のいずれかに突出部３３が挿通された排紙トレイ３１を、当該排紙トレイ３１の下側から、複数の孔部６２に対応する互いに排出方向Ｄ４に対する傾斜角度が異なる複数の装着姿勢のうち突出部３３が挿通された孔部６２に対応する前記装着姿勢で支持する。 The tray support section 63 supports the paper discharge tray 31 in which the protruding part 33 is inserted into any one of the plurality of holes 62 from the lower side of the paper discharge tray 31 in the discharge direction D4 of each of the paper discharge trays 31 corresponding to the plurality of holes 62. Among a plurality of mounting postures having different inclination angles relative to each other, the mounting posture is supported in the mounting posture corresponding to the hole 62 through which the protrusion 33 is inserted.
　具体的に、トレイ支持部６３は、一対の第１孔部６２Ａに一対の突出部３３が挿通された排紙トレイ３１を、第１孔部６２Ａに対応する第１装着姿勢で支持する。また、トレイ支持部６３は、一対の第２孔部６２Ｂに一対の突出部３３が挿通された排紙トレイ３１を、第２孔部６２Ｂに対応する第２装着姿勢で支持する。前記第２装着姿勢は、前記第１装着姿勢よりも排紙トレイ３１の排出方向Ｄ４に対する傾斜角度が小さい装着姿勢である。なお、図４には、前記第１装着姿勢で装着部２５Ｃに装着された排紙トレイ３１Ｃが示されている。また、図４には、前記第２装着姿勢で装着部２５Ｄに装着された排紙トレイ３１Ｄが示されている。 Specifically, the tray support section 63 supports the paper discharge tray 31, in which the pair of protrusions 33 are inserted into the pair of first holes 62A, in a first mounting posture corresponding to the first holes 62A. Further, the tray support section 63 supports the paper discharge tray 31, in which the pair of protrusions 33 are inserted into the pair of second holes 62B, in a second mounting posture corresponding to the second holes 62B. The second mounting posture is a mounting posture in which the inclination angle of the paper discharge tray 31 with respect to the discharge direction D4 is smaller than that of the first mounting posture. Note that FIG. 4 shows the paper discharge tray 31C mounted on the mounting section 25C in the first mounting posture. Further, FIG. 4 shows the paper discharge tray 31D mounted on the mounting section 25D in the second mounting posture.
　例えば、図４に示されるように、トレイ支持部６３は、第２孔部６２Ｂよりも排出方向Ｄ４の下流側で排出方向Ｄ４を向く第１面６４Ａと、第１面６４Ａよりも排出方向Ｄ４の上流側で上方向を向く第２面６４Ｂとにより形成される角部６４を有する。例えば、トレイ支持部６３は、第１面６４Ａを有し排出方向Ｄ４に厚みを有する第１平板状部と、第２面６４Ｂを有し上下方向Ｄ１に厚みを有する第２平板状部と、角部６４とを有する左右方向Ｄ３に長尺な部材である。トレイ支持部６３は、左右方向Ｄ３における両端部が一対の壁部６１によって支持されている。 For example, as shown in FIG. 4, the tray support portion 63 has a first surface 64A facing the discharge direction D4 on the downstream side of the second hole portion 62B in the discharge direction D4, and a first surface 64A facing the discharge direction D4 further than the first surface 64A. It has a corner portion 64 formed by a second surface 64B facing upward on the upstream side of the. For example, the tray support portion 63 includes a first flat portion having a first surface 64A and having a thickness in the ejection direction D4, and a second flat portion having a second surface 64B and having a thickness in the vertical direction D1. It is a member that is elongated in the left-right direction D3 and has a corner portion 64. Both end portions of the tray support portion 63 in the left-right direction D3 are supported by a pair of wall portions 61.
　ここで、図４に示されるように、排紙トレイ３１は、第２孔部６２Ｂに突出部３３が挿通された場合に角部６４と接触する段差部３４を有する。段差部３４は、シート支持部３２における排出方向Ｄ４の上流側の底部に形成される。段差部３４は、第１接触面、及び第２接触面を有する。前記第１接触面は、突出部３３が第２孔部６２Ｂに挿通された場合に第１面６４Ａと接触する平面である。前記第１接触面は、シート支持部３２の底面３２Ｄ（図４参照）との間で角部を形成する。前記第２接触面は、突出部３３が第２孔部６２Ｂに挿通された場合に第２面６４Ｂと接触する平面である。前記第２接触面は、前記第１接触面との間で角部を形成する。段差部３４は、左右方向Ｄ３に長尺である。 Here, as shown in FIG. 4, the paper discharge tray 31 has a step portion 34 that comes into contact with the corner portion 64 when the protrusion portion 33 is inserted into the second hole portion 62B. The stepped portion 34 is formed at the bottom of the sheet support portion 32 on the upstream side in the discharge direction D4. The stepped portion 34 has a first contact surface and a second contact surface. The first contact surface is a plane that contacts the first surface 64A when the protrusion 33 is inserted into the second hole 62B. The first contact surface forms a corner with the bottom surface 32D (see FIG. 4) of the seat support portion 32. The second contact surface is a plane that contacts the second surface 64B when the protrusion 33 is inserted into the second hole 62B. The second contact surface forms a corner with the first contact surface. The step portion 34 is elongated in the left-right direction D3.
　トレイ支持部６３の角部６４は、第２孔部６２Ｂに突出部３３が挿通された排紙トレイ３１（図４に示される排紙トレイ３１Ｄ参照）の段差部３４と接触して、突出部３３を中心とする当該排紙トレイ３１の回動を係止する。これにより、排紙トレイ３１が、前記第１装着姿勢で支持される。 The corner portion 64 of the tray support portion 63 comes into contact with the stepped portion 34 of the paper discharge tray 31 (see paper discharge tray 31D shown in FIG. 4) in which the protrusion 33 is inserted into the second hole 62B, and the protrusion Rotation of the paper discharge tray 31 about the center 33 is locked. As a result, the paper discharge tray 31 is supported in the first mounting position.
　また、トレイ支持部６３の第２面６４Ｂは、第１孔部６２Ａに突出部３３が挿通された排紙トレイ３１（図４に示される排紙トレイ３１Ｃ参照）における底面３２Ｄと前記第１接触面とにより形成される角部と接触して、突出部３３を中心とする当該排紙トレイ３１の回動を係止する。これにより、排紙トレイ３１が、前記第２装着姿勢で支持される。なお、底面３２Ｄと前記第１接触面とにより形成される角部は、排紙トレイ３１が前記第２装着姿勢で支持される場合に第２面６４Ｂと面接触することが可能となるように面取りされていることが望ましい。 Further, the second surface 64B of the tray support section 63 makes the first contact with the bottom surface 32D of the paper discharge tray 31 (see paper discharge tray 31C shown in FIG. 4) in which the protrusion 33 is inserted into the first hole 62A. The sheet discharge tray 31 is stopped from rotating around the protrusion 33 by contacting the corner formed by the surface. As a result, the paper discharge tray 31 is supported in the second mounting position. Note that the corner formed by the bottom surface 32D and the first contact surface is configured so that it can come into surface contact with the second surface 64B when the paper ejection tray 31 is supported in the second mounting posture. Preferably chamfered.
　図４に示されるように、トレイ支持部６３は、第２面６４Ｂから隆起する隆起部６５を備える。隆起部６５は、第１孔部６２Ａの下側において左右方向Ｄ３に沿って形成される。隆起部６５は、第１孔部６２Ａに突出部３３が挿通された排紙トレイ３１（図４に示される排紙トレイ３１Ｃ参照）における背面３２Ｅ（図４参照）と接触して、突出部３３を中心とする当該排紙トレイ３１の回動を係止する。これにより、排紙トレイ３１が２点で支持されるため、排紙トレイ３１の姿勢が安定する。 As shown in FIG. 4, the tray support portion 63 includes a protrusion 65 protruding from the second surface 64B. The raised portion 65 is formed below the first hole 62A along the left-right direction D3. The protrusion 65 contacts the back surface 32E (see FIG. 4) of the paper discharge tray 31 (see paper discharge tray 31C shown in FIG. 4) in which the protrusion 33 is inserted into the first hole 62A, and the protrusion 33 is inserted into the first hole 62A. The rotation of the paper discharge tray 31 about the center is stopped. As a result, the paper discharge tray 31 is supported at two points, so that the posture of the paper discharge tray 31 is stabilized.
　例えば、後処理装置３では、排紙トレイ３１の位置が上であるほど、排出方向Ｄ４に対する排紙トレイ３１の傾斜角度が大きくなるように、装着部２５各々に排紙トレイ３１が装着される。これにより、上下方向Ｄ１に連続する２つの排紙トレイ３１の間に形成される、下側の排紙トレイ３１に排出されたシートへのアクセス空間が狭くなることが回避される。そのため、ユーザーによる排紙トレイ３１に排出されたシートへのアクセスがしづらくなることを回避可能である。ここで、画像形成装置１００のユーザーにより実行される、排紙トレイ３１の位置が上であるほど排出方向Ｄ４に対する排紙トレイ３１の傾斜角度が大きくなるように装着部２５各々に排紙トレイ３１を装着する工程は、本発明のシート排出装置の使用方法に含まれる装着ステップの一例である。 For example, in the post-processing device 3, the paper ejection tray 31 is attached to each of the mounting sections 25 such that the higher the position of the paper ejection tray 31, the greater the inclination angle of the paper ejection tray 31 with respect to the ejection direction D4. . This avoids narrowing of the access space for sheets discharged to the lower paper discharge tray 31, which is formed between two paper discharge trays 31 that are continuous in the vertical direction D1. Therefore, it is possible to avoid making it difficult for the user to access the sheets discharged to the paper discharge tray 31. Here, the user of the image forming apparatus 100 attaches the paper ejection tray 31 to each mounting section 25 so that the higher the position of the paper ejection tray 31 is, the greater the inclination angle of the paper ejection tray 31 with respect to the ejection direction D4. The step of mounting is an example of the mounting step included in the method of using the sheet discharging device of the present invention.
　このように、画像形成装置１００は、壁部６１において排出方向Ｄ４に沿って並んで設けられ、それぞれが突出部３３を挿通可能に形成される複数の孔部６２を備える。また、画像形成装置１００は、複数の孔部６２のいずれかに突出部３３が挿通された排紙トレイ３１を、当該排紙トレイ３１の下側から、複数の孔部６２に対応する互いに排出方向Ｄ４に対する傾斜角度が異なる複数の前記装着姿勢のうち突出部３３が挿通された孔部６２に対応する前記装着姿勢で支持するトレイ支持部６３を備える。これにより、前記角度調整機構を備える装置と比較して、簡素な構成で排紙トレイ３１の傾斜角度を切り替えることが可能である。 In this manner, the image forming apparatus 100 includes a plurality of holes 62 that are arranged in the wall portion 61 along the discharge direction D4, and each of the holes 62 is formed so that the protrusion portion 33 can be inserted therethrough. Further, the image forming apparatus 100 ejects the paper ejection trays 31 each having the protrusion 33 inserted into one of the plurality of holes 62 from the lower side of the paper ejection tray 31 to each other corresponding to the plurality of holes 62. A tray support portion 63 is provided to support the tray in the mounting posture corresponding to the hole 62 through which the protrusion 33 is inserted among the plurality of mounting postures having different inclination angles with respect to the direction D4. As a result, it is possible to change the inclination angle of the paper discharge tray 31 with a simpler configuration compared to the apparatus provided with the angle adjustment mechanism.
　また、画像形成装置１００は、第２孔部６２Ｂよりも排出方向Ｄ４の下流側で排出方向Ｄ４を向く第１面６４Ａと第１面６４Ａよりも排出方向Ｄ４の上流側で上方向を向く第２面６４Ｂとにより形成される角部６４を有するトレイ支持部６３を備える。また、画像形成装置１００は、第２孔部６２Ｂに突出部３３が挿通された場合に角部６４と接触する段差部３４を有する排紙トレイ３１を備える。これにより、トレイ支持部６３が複数の前記装着姿勢に対応する複数のトレイ支持形状６６（図５参照）を有する構成と比較して、トレイ支持部６３の形状を簡素化可能である。 The image forming apparatus 100 also includes a first surface 64A facing the discharge direction D4 on the downstream side of the second hole 62B in the discharge direction D4, and a first surface 64A facing upward in the discharge direction D4 on the upstream side of the first surface 64A. The tray support portion 63 has a corner portion 64 formed by two surfaces 64B. The image forming apparatus 100 also includes a paper discharge tray 31 having a stepped portion 34 that contacts the corner portion 64 when the protruding portion 33 is inserted into the second hole portion 62B. Thereby, the shape of the tray support part 63 can be simplified compared to a configuration in which the tray support part 63 has a plurality of tray support shapes 66 (see FIG. 5) corresponding to the plurality of mounting positions.
　なお、図５に示されるように、トレイ支持部６３は、複数の前記装着姿勢に対応する複数のトレイ支持形状６６を備えていてもよい。トレイ支持形状６６各々は、排紙トレイ３１における排出方向Ｄ４の上流側の端部を、当該トレイ支持形状６６に対応する前記装着姿勢で支持可能な形状であればよい。また、図５に示されるように、孔部６２の数は、３つ以上であってもよい。 Note that, as shown in FIG. 5, the tray support section 63 may include a plurality of tray support shapes 66 corresponding to the plurality of mounting positions. Each of the tray support shapes 66 may have any shape as long as it can support the upstream end of the paper ejection tray 31 in the discharge direction D4 in the mounting attitude corresponding to the tray support shape 66. Further, as shown in FIG. 5, the number of holes 62 may be three or more.
　また、本発明は、後処理装置３に替えて、一つの排出口２４と、当該排出口２４に対応する排紙トレイ３１とを含むシート排出装置を備える画像形成装置１００に適用されてもよい。 Further, the present invention may be applied to an image forming apparatus 100 that includes a sheet ejection device including one ejection port 24 and a paper ejection tray 31 corresponding to the ejection port 24 instead of the post-processing device 3. .
　また、本発明のシート排出装置によって排出されるシートは、画像が形成されたシートに限られず、スキャナーによって画像を読み取られたシートなどであってもよい。 Further, the sheet discharged by the sheet discharge device of the present invention is not limited to a sheet on which an image is formed, but may be a sheet on which an image has been read by a scanner.

Claims (4)

  1. 　水平方向に沿った排出方向へシートが排出される排出口と、
    　前記排出口よりも前記排出方向の下流側で前記排出口から排出される前記シートを支持するシート支持部、及び前記シート支持部における前記排出方向の上流側の端部であって前記排出方向と直交する幅方向の側部から前記幅方向の外側へ向けて突出する突出部を有する排紙トレイと、
    　前記排紙トレイが着脱される装着部と、
    　を備え、
    　前記装着部は、
    　前記シート支持部の前記側部と対向する壁部と、
    　前記壁部において前記排出方向に沿って並んで設けられ、それぞれが前記突出部を挿通可能に形成される複数の孔部と、
    　複数の前記孔部のいずれかに前記突出部が挿通された前記排紙トレイを当該排紙トレイの下側から複数の前記孔部に対応する互いに前記排出方向に対する傾斜角度が異なる複数の装着姿勢のうち前記突出部が挿通された前記孔部に対応する前記装着姿勢で支持するトレイ支持部と、
    　を備えるシート排出装置。     a discharge port through which sheets are discharged in a horizontal discharge direction;
    a sheet support portion that supports the sheet discharged from the discharge port on the downstream side of the discharge port in the discharge direction; and an end portion of the sheet support portion on the upstream side in the discharge direction that is opposite to the discharge direction. a paper ejection tray having a protrusion that protrudes outward in the width direction from the orthogonal width direction side portions;
    a mounting section to which the paper output tray is attached and detached;
    Equipped with
    The mounting part is
    a wall portion facing the side portion of the seat support portion;
    a plurality of holes arranged in the wall along the discharge direction, each of which is formed so that the protrusion can be inserted therethrough;
    The paper ejection tray, in which the protruding part is inserted into any one of the plurality of holes, is mounted from the bottom of the paper ejection tray in a plurality of mounting positions corresponding to the plurality of holes and having different inclination angles with respect to the ejection direction. a tray support part that supports the tray in the mounting position corresponding to the hole through which the protrusion is inserted;
    A sheet ejecting device comprising:
  2. 　複数の前記孔部は、第１孔部、及び前記第１孔部よりも前記排出方向の下流側に位置する第２孔部を含み、
    　前記トレイ支持部は、前記第２孔部よりも前記排出方向の下流側で前記排出方向を向く第１面と前記第１面よりも前記排出方向の上流側で上方向を向く第２面とにより形成される角部を有し、
    　前記排紙トレイは、前記第２孔部に前記突出部が挿通された場合に前記角部と接触する段差部を有する、
    　請求項１に記載のシート排出装置。     The plurality of holes include a first hole and a second hole located downstream of the first hole in the discharge direction,
    The tray support portion has a first surface that is downstream of the second hole in the discharge direction and faces the discharge direction, and a second surface that is upstream of the first surface in the discharge direction and faces upward. has a corner formed by
    The paper ejection tray has a stepped portion that comes into contact with the corner when the protruding portion is inserted into the second hole.
    The sheet discharge device according to claim 1.
  3. 　前記シートに画像を形成する画像形成部と、
    　前記画像形成部によって画像が形成された前記シートを排出する請求項１に記載のシート排出装置と、
    　を備える画像形成装置。     an image forming unit that forms an image on the sheet;
    The sheet discharge device according to claim 1, which discharges the sheet on which an image has been formed by the image forming section;
    An image forming apparatus comprising:
  4. 　鉛直方向に沿って並ぶ複数の前記排出口と、
    　複数の前記排出口に対応する複数の前記排紙トレイと、
    　複数の前記排出口に対応する複数の前記装着部と、
    　を備える請求項１又は２に記載のシート排出装置の使用方法であって、
    　前記排紙トレイの位置が上であるほど前記排出方向に対する前記排紙トレイの傾斜角度が大きくなるように、前記装着部各々に前記排紙トレイを装着する装着ステップを含む、
    　シート排出装置の使用方法。     a plurality of the discharge ports arranged in a vertical direction;
    a plurality of the paper ejection trays corresponding to the plurality of ejection ports;
    a plurality of the mounting portions corresponding to the plurality of discharge ports;
    3. A method of using the sheet discharging device according to claim 1 or 2, comprising:
    mounting the paper ejection tray on each of the mounting portions such that the higher the paper ejection tray is located, the greater the inclination angle of the paper ejection tray with respect to the ejection direction;
    How to use the sheet ejection device.
PCT/JP2023/023055 2022-08-10 2023-06-22 Sheet ejection device, image formation device, and method for using sheet ejection device WO2024034269A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0486658U (en) * 1990-11-30 1992-07-28
JP2016098108A (en) * 2014-11-26 2016-05-30 京セラドキュメントソリューションズ株式会社 Paper discharge tray and image formation device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0486658U (en) * 1990-11-30 1992-07-28
JP2016098108A (en) * 2014-11-26 2016-05-30 京セラドキュメントソリューションズ株式会社 Paper discharge tray and image formation device

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