JP2011201643A - Medium discharge device and image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve storage performance in a stacking part of a medium.SOLUTION: This medium discharge device includes a discharge member for discharging the medium to the stacking part, a medium pressing member 36+37 arranged on the downstream side in the discharge direction to a discharge port 2a for passing the medium discharged to the stacking part, that is, the medium pressing member 36+37 having a pressing part 36 rotatably supported around the rotational center 36a and extending to the multi-end side of the discharge port 2a and capable of pressing down the medium when the pressing part 36 contacts with a surface of the medium, and a pressing-moving means C1 for moving the pressing part 36 between a pressing position where the pressing part 36 can contact with the medium surface and a separate position where the pressing part 36 is moved in the direction for separating from the discharge port 2a, based on a preset pressing-separating condition.

Description

  The present invention relates to a medium discharge device and an image forming apparatus.

  Conventionally, for example, a technique described in Patent Document 1 below is known as a technique for improving pressability by holding a medium in contact with the medium when the medium on which the image is recorded is discharged to the discharge tray, and improving the accommodation and alignment. ing.

  Japanese Patent Laid-Open No. 9-77339 as Patent Document 1 discloses a discharge roller of an upper sheet discharge roller (113) in a discharge tray (2) discharged by a pair of upper and lower sheet discharge rollers (113, 114). A first oscillating member (31) having a rectangular shape rotatably supported by the shaft (111), and a first oscillating member rotatably connected by a pin to the tip of the first oscillating member (31). A configuration in which a sheet presser (3) having a rectangular plate-like second swinging member (32) having a length approximately twice as long as the member (31) is disposed is described. The sheet is discharged between the tray (2) and the sheet presser (3), and the upper surface of the sheet is pressed by the first swinging member (31) and the second swinging member (32). It describes a technology that makes it easy to accommodate even curved or concavely curled paper That.

JP-A-9-77339 ("0025" to "0045", FIGS. 1 to 4)

  An object of the present invention is to improve the storage capacity of a medium stacking unit.

In order to solve the technical problem, the medium discharge device of the invention according to claim 1 comprises:
A stacking unit on which an image-formed medium is loaded;
A discharge member for discharging the medium to the stacking unit;
A medium pressing member disposed on the downstream side in the discharge direction with respect to a discharge port through which the medium discharged to the stacking unit passes, and is supported so as to be rotatable around a rotation center, and the thickness of the medium at the discharge port The medium pressing member having a pressing portion extending from one end side in the vertical direction to the multi-end side, and capable of pressing the medium by the pressing portion contacting the surface of the medium that has passed through the discharge port;
Based on preset pressing and separating conditions, the pressing portion can extend from one end side in the medium thickness direction of the discharge port to the multi-end side and contact the medium surface, and the pressing portion is connected to the discharge port. A pressing movement means for moving the pressing unit between a separation position that is moved in a separating direction and the pressing unit cannot contact the medium surface; and
It is provided with.

The invention described in claim 2 is the medium discharging apparatus according to claim 1,
A shaft support portion for supporting a rotation shaft as the rotation center;
An accommodating body having an opening through which the shaft support portion can pass and a lifting portion formed at an edge of the opening, and capable of accommodating the shaft support portion, wherein the shaft support portion is located on the opening side. A lifting separation position where the pressing portion moves away from the lifting portion and moves to the pressing position, and the shaft support portion moves from the opening side to the inside of the container so that the pressing member moves to the lifting portion. And a lifting position that moves to the separated position in contact with the container, the container that movably supports the shaft support portion, and
A pressing movement member that moves the shaft support portion between the lifting position and the lifting separation position;
The pressing and moving means for moving the pressing portion by controlling the pressing and moving member; and
It is provided with.

According to a third aspect of the present invention, in the medium ejection device according to the first aspect,
An interlocking member that is rotatably supported integrally with the pressing portion;
A pressing rotation member engageable with the interlocking member, the pressing rotation member engaging with the interlocking member during operation and rotating the pressing portion in a direction to move from the pressing position to the separation position;
The pressing movement means for moving the pressing portion by controlling the operation of the pressing rotating member;
It is provided with.

According to a fourth aspect of the present invention, there is provided the medium discharging apparatus according to any one of the first to third aspects,
Separation condition storage means for storing that the size of the medium is a small medium smaller than a preset size as the pressing separation condition;
The pressing movement means for moving the pressing portion to the separation position when the medium is the small medium based on the pressing separation condition;
It is provided with.

According to a fifth aspect of the present invention, in the medium discharge device according to any one of the first to fourth aspects,
The discharge member supported so as to be movable in the width direction of the medium, and moved in the width direction of the medium with the medium to be discharged sandwiched therebetween, so that the position is shifted in the width direction of the medium. The discharge member capable of discharging the medium;
Separation condition storage means for storing that the medium is not discharged to a position shifted in the width direction as the pressing separation condition;
The pressing movement means for moving the pressing portion to the separation position when the medium is not discharged to a position shifted in the width direction based on the pressing separation condition;
It is provided with.

In order to solve the technical problem, an image forming apparatus according to a sixth aspect of the present invention provides:
An image recording apparatus for recording an image on a medium;
The medium discharging apparatus according to any one of claims 1 to 5, wherein a medium on which an image is recorded by the image recording apparatus is discharged.
It is provided with.

According to a seventh aspect of the present invention, in the image forming apparatus according to the sixth aspect,
A reversing device for reversing the medium on which the image is recorded on the first side and conveying it to the image recording device;
The discharge member that rotates forward and discharges the medium to the stacking unit, and reversely rotates and conveys the medium toward the reversing device when a medium on which an image is recorded on the first surface approaches,
Separation condition storage means for storing a case of conveying to the reversing device as the pressing separation condition;
The pressing movement means for moving the pressing portion to the separation position when the medium is transported to the reversing device based on the pressing separation condition;
It is provided with.

According to the first and sixth aspects of the invention, the storage capacity of the medium stacking portion can be improved as compared with the configuration in which the pressing portion does not move from the pressing position to the separating position based on the pressing / separating condition.
According to the second aspect of the present invention, the shaft support portion can be moved between the lifting position and the lifting separation position in the container, and the pressing portion can be moved between the separation position and the pressing position.
According to the invention described in claim 3, the pressing rotation member can be engaged with the pressing portion, and the pressing portion can be moved to the separated position.

According to the fourth aspect of the present invention, it is possible to improve the storage capacity as compared to the conventional configuration in which the pressing member is brought into contact with a small medium that may deteriorate the storage capacity when the pressing member comes into contact.
According to the fifth aspect of the present invention, it is possible to improve the storage capacity as compared with the conventional configuration in which the pressing member is brought into contact at the time of shifting and discharging, which may deteriorate the storage capacity when the pressing member comes into contact.
According to the seventh aspect of the present invention, compared to the conventional configuration in which the pressing member is brought into contact at the time of reversal that may cause a conveyance failure when the pressing member comes into contact, the accommodation property can be improved.

FIG. 1 is an overall explanatory view of an image forming apparatus according to a first embodiment. FIG. 2 is an explanatory diagram of a main part of the medium discharging apparatus according to the first embodiment. FIG. 3 is a perspective explanatory view of an optional discharge unit as an example of the medium discharge device of the first embodiment. 4A and 4B are explanatory diagrams of the offset mechanism of the medium discharging apparatus according to the first embodiment. FIG. 4A is an explanatory diagram viewed from above, and FIG. 4B is a diagram viewed from the direction of arrow IVB in FIG. FIG. 5 is an explanatory view of the shift discharge mechanism of the first embodiment, FIG. 5A is an explanatory view of the state moved to the reference position, FIG. 5B is an explanatory view of the state moved to the front shift position, and FIG. 5C is the rear shift position. It is explanatory drawing of the state which moved. 6A and 6B are explanatory diagrams of the medium pressing member according to the first exemplary embodiment. FIG. 6A is an explanatory diagram illustrating a state where the medium pressing portion has moved to the pressing position. FIG. 6B is an explanatory diagram illustrating a state where the medium pressing portion has moved to the separation position. is there. 7A and 7B are explanatory diagrams of the medium pressing member according to the second embodiment. FIG. 7A is an explanatory diagram illustrating a state in which the medium pressing portion has moved to the pressing position. FIG. 7B is an explanatory diagram illustrating a state in which the medium pressing portion has moved to the separation position. is there.

Next, specific examples of embodiments of the present invention (hereinafter referred to as examples) will be described with reference to the drawings, but the present invention is not limited to the following examples.
In order to facilitate understanding of the following description, in the drawings, the front-rear direction is the X-axis direction, the left-right direction is the Y-axis direction, the up-down direction is the Z-axis direction, and arrows X, -X, Y, -Y, The direction indicated by Z and -Z or the indicated side is defined as the front side, the rear side, the right side, the left side, the upper side, the lower side, or the front side, the rear side, the right side, the left side, the upper side, and the lower side, respectively.
In the figure, “•” in “○” means an arrow heading from the back of the page to the front, and “×” in “○” is the front of the page. It means an arrow pointing from the back to the back.
In the following description using the drawings, illustrations other than members necessary for the description are omitted as appropriate for easy understanding.

FIG. 1 is an overall explanatory view of an image forming apparatus according to a first embodiment.
In FIG. 1, a printer U as an example of an image forming apparatus according to the first exemplary embodiment includes a printer main body U1 as an example of an image forming apparatus main body, and is an example of a first stacking unit on the upper surface of the printer main body U1. A paper discharge tray TRh as an example of a first discharge unit is provided. A paper feed tray TR1 as an example of a paper feed container in which a recording sheet S as an example of a medium on which an image is recorded is accommodated in the lower portion of the printer body U1. Further, a side cover U2 as an example of an opening / closing member that is opened and closed when the internal replaceable member is replaced is supported at the center of the front surface of the printer main body U1 so as to be rotatable around a rotation center (not shown).

  The printer main body U1 according to the first exemplary embodiment is an example of an operation unit UI, a control unit C, and a latent image writing device driving circuit controlled by the control unit C. A laser driving circuit DL, an image processing unit GS, a power supply circuit E, and the like are included. The control unit C according to the first embodiment executes an I / O: input / output interface as an example of an input / output signal adjustment unit that performs input / output of an external signal and adjustment of an input / output signal level, and performs necessary processing. ROM for storing programs and data for reading: Read-only memory; RAM for temporarily storing necessary data: Random access memory; CPU for performing processing according to programs stored in ROM: Central processing The computer is configured as an example of a computer having a processing device and a clock oscillator, and various functions can be realized by executing a program stored in the ROM.

  The image processing unit GS converts image information input from an external information processing apparatus or the like, so-called image data, into image data for writing and temporarily stores the image data at a predetermined time, so-called. At a timing, it is output to the laser drive circuit DL as image data for forming a latent image. The laser driving circuit DL outputs a laser driving signal to the latent image forming apparatus ROS according to the input image data. The latent image forming apparatus ROS emits image writing light for image writing, that is, a so-called laser beam L in accordance with a laser driving signal. The operation of the operation unit UI, the image processing unit GS, the laser driving circuit DL, the developing rolls GRy to GRk described later, and the power supply circuit E for applying a voltage to the transfer rolls T1 and T2b is controlled by the control unit C.

The rotationally driven image holding member PR disposed above the latent image forming apparatus ROS is uniformly charged by a charging roll CR as an example of a charger, and then the latent image forming member ROS has a latent image writing position Q1. Exposure scanning is performed by the laser beam L of the latent image forming device ROS to form an electrostatic latent image. In the case of forming a full-color image, electrostatic latent images corresponding to four color images of Y: yellow, M: magenta, C: cyan, and K: black are sequentially formed. In the case of a monochrome image, K: a black image. Only the electrostatic latent image corresponding to is formed.
The surface of the image carrier PR on which the electrostatic latent image is formed rotates and moves sequentially through the development area Q2 and the primary transfer area Q3.

  Above the latent image forming device ROS, a rotary, so-called rotary developing device G is arranged. The developing device G has four color developing devices GY, GM, GC, Y: yellow, M: magenta, C: cyan, and K: black that sequentially rotate and move to the developing region Q2 as the rotation axis Ga rotates. Has GK. The developing devices GY to GK of the respective colors have developing rolls GRy, GRm, GRc, GRk as an example of a developer holding body that conveys the developer to the developing region Q2, and an image passing through the developing region Q2. The electrostatic latent image on the holding body PR is developed into a toner image as an example of a visible image. The developing device main bodies of the developing devices GY to GK are each configured to be supplied with the developer of each color, that is, toner, from a toner cartridge TCy, TCm, TCc, TCk as an example of a developer supply container. .

  An endless intermediate transfer belt B as an example of an intermediate transfer member is disposed above the image carrier PR. The intermediate transfer belt B includes a driving roll Rd as an example of a driving member for rotational driving, a primary transfer roll T1 as an example of a primary transfer device to which a primary transfer voltage is applied, and an intermediate transfer belt B. It is supported by a tension roll Rt as an example of a tension generating member that generates tension, a backup roll T2a as an example of a counter member, and a free roll Rf as an example of a support member that supports the intermediate transfer belt B. Each of the rolls Rd, T1, Rf, Rt, T2a constitutes a belt support member Rd, T1, Rf, Rt, T2a as an example of an intermediate transfer member support member. The intermediate transfer belt B is rotatably supported by the drive roll Rd, and rotates in the arrow Yb direction during an image forming operation.

When a multicolor image, that is, a full color image is formed, an electrostatic latent image of the first color is formed at the latent image writing position Q1, and a toner image of the first color is formed in the development region Q2. This toner image is electrostatically primary transferred onto the intermediate transfer belt B by the primary transfer roll T1 when passing through the primary transfer region Q3. Thereafter, similarly, the second, third, and fourth color toner images are sequentially superimposed and transferred onto the intermediate transfer belt B holding the first color toner image, and finally the full-color multiplex is performed. A toner image is formed on the intermediate transfer belt B.
In the case of forming a monochromatic monochromatic image, only one developing device is used, and the monochromatic toner image is primarily transferred onto the intermediate transfer belt B.
After the primary transfer, the surface of the image carrier PR is cleaned by an image carrier cleaner CL1 as an example of an image carrier cleaner. The image carrier PR from which the residual toner adhering to the surface is collected by the image carrier cleaner CL1 is recharged by the charging roll CR.

At a position facing the backup roll T2a, a secondary transfer roll T2b as an example of a secondary transfer member is disposed so as to be movable between a position separated from the backup roll T2a and a position in contact with the backup roll T2a. . The backup roll T2a and the secondary transfer roll T2b constitute a secondary transfer device T2. In addition, a secondary transfer region Q4 is formed by a contact region between the backup roll T2a and the secondary transfer roll T2b.
A secondary transfer voltage having a polarity opposite to the charging polarity of the toner used in the developing device G is supplied from the power supply circuit E to the secondary transfer roll T2b.
The primary transfer roll T1, the secondary transfer device T2, the intermediate transfer belt B, and the like constitute a transfer device T1 + T2 + B of Example 1.

The paper feed tray TR1 accommodates a recording sheet S to be conveyed to the secondary transfer area Q4, and follows a rail as an example of a pair of guide members disposed along the front-rear direction on both the left and right sides thereof. It is supported so that it can move. A pick-up roll Rp as an example of a take-out member supported on the upper side of the paper feed tray TR1 is loaded on the paper feed tray TR1 in accordance with a preset paper feed timing, that is, a paper feed timing. The recording sheet S is taken out. Each of the recording sheets S is one by one in a pressure contact region of a separating roll Rs as an example of a separating member having a feed roll Rs1 as an example of a conveying member and a retard roll Rs2 as an example of a pressing member for separating. The paper is separated and conveyed to the paper feed path SH1. The recording sheet S on the sheet feeding path SH1 is conveyed to a registration roll Rr as an example of an adjustment conveying member by a sheet conveying roll Ra as an example of a plurality of medium conveying members. The registration roll Rr conveys the recording sheet S to a main conveyance path SH2 as an example of a conveyance path on the downstream side of the sheet feeding path SH1, and conveys the recording sheet S to the secondary transfer region Q4 at a predetermined timing.
The pickup roll Rp, the separating roll Rs, and the like constitute the sheet feeding device Rp + Rs of the first embodiment.

Further, the recording sheet S fed from the manual feed tray TR0 as an example of a manual paper feed unit is also a hand as an example of a manual transport member from the manual sheet transport path SH0 as an example of a manual medium transport path. The sheet is conveyed into the printer main body U1 by the difference sheet conveying roll Rp0, and is conveyed to the secondary transfer region Q4 by the sheet conveying roll Ra and the registration roll Rr arranged along the sheet conveying path SH.
The toner image on the intermediate transfer belt B is secondarily transferred to the recording sheet S passing through the secondary transfer region Q4 by the secondary transfer unit T2. The toner remaining on the surface of the intermediate transfer belt B after the secondary transfer is collected and cleaned by a belt cleaner CLB as an example of an intermediate transfer member cleaning member. The secondary transfer roll T2b removes paper dust and the like attached by a secondary transfer roll cleaner CLt as an example of a secondary transfer unit cleaner.

The recording sheet S on which the unfixed toner image is transferred in the secondary transfer region Q4 is conveyed to the fixing device F with the toner image being unfixed. The fixing device F heats and presses the toner image in a fixing region Q5 where a heating roll Fh as an example of a heating member and a pressure roll Fp as an example of a pressure member are in contact with each other to fix the toner image.
The image recording device PR + G + T1 + T2 + B + F of Example 1 is configured by the image carrier PR, the developing device G, the transfer device T1 + T2 + B, the fixing device F, and the like.

  Further, above the fixing device F on the downstream side in the transport direction, when the recording sheet S is transported to the paper discharge tray TRh, a paper discharge path SH3 as an example of a first medium discharge path, and an inversion or image recording An upper connection path SH4 is provided as an example of a branch conveyance path through which the recording sheet S discharged with the surface facing up is conveyed. A first gate GT1 as an example of a conveyance path switching member that switches the conveyance path according to the conveyance destination of the recording sheet S is disposed in the branching section B1 to which the discharge path SH3 and the upper connection path SH4 are connected. ing. Therefore, when discharged to the paper discharge tray TRh, the fixed recording sheet S is transported through the paper discharge path SH3, and is discharged to the paper discharge tray TRh by a paper discharge roll Rh as an example of a first discharge member. The

FIG. 2 is an explanatory diagram of a main part of the medium discharging apparatus according to the first embodiment.
1 and 2, an optional discharge unit U3 as an example of an additional medium discharge device is supported above the fixing device F, and the optional discharge unit U3 is disposed above the discharge tray TRh. And a face-down tray TRh2 as an example of a second discharge unit, which is an example of a second stacking unit that is stacked with the image recording surface facing down like the paper discharge tray TRh. The face-up tray TRh3 is an example of a third stacking unit that is stacked with the surface facing upward, and is an example of a third discharge unit.

  Inside the optional discharge unit U3, a reversing / discharging common path SH5 as an example of a conveying path connected to the upper connecting path SH4, and a recording sheet connected to the reversing / discharging common path SH5 and on the face-down tray TRh2 As an example of a face down discharge path SH6 as an example of a second medium discharge path for sending S and an example of a third medium discharge path connected to the reversing / discharge common path SH5 and sending the recording sheet S to the face up tray TRh3 And a face-up discharge path SH7. A reversing roll Rh2 that is an example of a second reversing member and is an example of a medium reversing member is disposed in the face-down discharge path SH6. A face-up paper discharge roll Rh3 as an example of a third discharge member is disposed and conveys the recording sheet S in each of the discharge paths SH6 and SH7.

A second gate GT2 as an example of a conveyance path switching member for switching the conveyance path of the recording sheet S is disposed at the branching portion B2 of the reversal / discharge common path SH5, the face-down discharge path SH6, and the face-up discharge path SH7. Yes. The second gate GT2 switches the conveyance path to the face-down discharge path SH6 when the recording sheet S is discharged to the face-down tray TRh2 and when reversed for duplex printing, and the recording sheet S is transferred to the face-up tray TRh3. When the paper is discharged, the conveyance path is switched to the face-up discharge path SH7.
Here, the second discharge path SH4 + SH5 + SH6 of the first embodiment is configured by the upper connection path SH4, the reversal / discharge common path SH5, and the face-down discharge path SH6.
Further, the upper connection path SH4, the reverse / discharge common path SH5, and the face-up discharge path SH7 constitute a third paper discharge path SH4 + SH5 + SH7 of the first embodiment.

  In FIG. 1, a reversing unit U4 as an example of an additional unit is installed on the left side of the printer body U1. The reversing unit U4 is provided with a reversing path SH8, which is connected to the lower end of the reversing / discharging common path SH5 and is an example of a transport path for transporting the recording sheet S during duplex printing. The reversing path SH8 includes a main reversing path SH8a extending linearly along the direction of gravity, an upstream reversing path SH8b connecting the main reversing path SH8a and the reversing / discharging common path SH5, and the main reversing path SH8a. A downstream inversion path SH8c connecting the registration roll Rr. A third gate as an example of a conveyance path switching member that switches the conveyance path so that the recording sheet S is not conveyed to the upper connection path SH4 at the time of reversal is provided at the connection portion B3 between the upstream reversal path SH8b and the reversal / discharge common path SH5. GT3 is arranged. A reversing path as an example of a reversing path transporting member that transports the recording sheet S in the reversing path SH8 is provided on the reversing path SH8 that is a transport path downstream in the transport direction of the reversing / discharging common path SH5 and the face-down discharging path SH6. A transport roll Ra2 is disposed.

Therefore, the recording sheet S to be printed on both sides is conveyed through the reversing / discharging common path SH5 and discharged to the face-down tray TRh2 until the rear end portion of the recording sheet S is sandwiched by the reversing roll Rh2. After that, the reverse roll Rh2 rotates in the reverse direction, and the recording sheet S is conveyed to the reverse path SH8. That is, the recording sheet S is so-called switched back on the reverse roll Rh2 and conveyed to the reverse path SH8. The recording sheet S transported through the reversing path SH8 is transported by the reversing path transport roll Ra2, and is transported to the registration roll Rr with the front and back sides reversed.
In FIG. 1, the paper feed path SH1 includes a first paper feed path sensor SN1 as an example of a first medium detection member for detecting the recording sheet S fed from each paper feed tray TR1. Has been placed. Further, the upper connection path SH4, the reversal / discharge common path SH5, the main reversal path SH8b, and the discharge paths SH3, SH6, and SH7 are connected as an example of a second medium detection member for detecting the recording sheet S. The path sensor SN2, the common path sensor SN3 as an example of the third medium detection member, the reverse path sensor SN4 as an example of the fourth medium detection member, and the discharge path sensor SN5a as an example of the medium detection member for the discharge path SN5c is arranged.

A sheet reversing device U4 as an example of a medium reversing device is mounted on the manual feed tray TR0. The main reversing path SH8a is formed inside the sheet reversing device U4. Therefore, at the time of duplex printing, the sheet S on which the toner image is fixed in the fixing region Q5 passes through the upstream inversion path SH8b, the main inversion path SH8a, and the downstream inversion path SH8c and is conveyed to the registration roll Rr. Then, the sheet S is retransmitted to the secondary transfer area Q4 with the front and back sides thereof being reversed.
The medium conveying device BHS of the first embodiment is configured by the members SH1 to SH8, Rp, Rp0, Rs, Ra, Ra2, Rr, Rh to Rh3, and the like.

(Description of optional discharge unit U3)
FIG. 3 is a perspective explanatory view of an optional discharge unit as an example of the medium discharge device of the first embodiment.
4A and 4B are explanatory diagrams of the offset mechanism of the medium discharging apparatus according to the first embodiment. FIG. 4A is an explanatory diagram viewed from above, and FIG. 4B is a diagram viewed from the direction of arrow IVB in FIG.
2 and 3, the optional discharge unit U <b> 3 according to the first embodiment includes a discharge device body 1. The right wall 2 as an example of the exposure restricting portion of the discharge device main body 1 is formed with a face-down discharge port 2a in which the reverse roll Rh2 is disposed as an example of a second discharge port.
2 to 4, the reversing roll Rh <b> 2 includes a driving discharge roll 4 as an example of a driving discharge member disposed on the upper side in the gravitational direction, and the driving discharge roll 4. It has a driven discharge roll 6 as an example of a driven discharge member that rotates following rotation.

  In FIG. 4, the drive discharge roll 4 includes a drive shaft 7 as an example of a rotary shaft extending in the front-rear direction, and four drive roll bodies 8 as an example of a drive side rotary body fixedly supported by the drive shaft 7. Have In FIG. 4B, the drive shaft 7 is supported at both front and rear ends by a bearing portion 9 of the discharge device body 1 so as to be rotatable and movable along the axial direction. A driven gear 10 as an example of a driven gear is supported at the rear end of the driving shaft 7. A transmission gear 11 as an example of a transmission gear meshes with the driven gear 10, and a drive from a discharge motor M 0 as an example of a discharge drive source is transmitted to the transmission gear 11. The transmission gear 11 according to the first embodiment is longer in the axial direction than the driven gear 10, and slides together with the drive shaft 7 even if the drive shaft 7 moves in a range in which the drive shaft 7 can slide in the axial direction. The length is set such that the drive can be transmitted while continuing to mesh with the driven gear 10.

A driven roll support frame 16 extending in the front-rear direction is disposed below the drive shaft 7 as an example of a driven side frame. The driven roll support frame 16 is an example of a driven frame body 17 that extends in the front-rear direction, and an example of a connecting portion that is supported on both front and rear ends of the driven frame body 17 and supported on the inside of the bearing portion 9 of the drive shaft 7. Connecting arm 18. Therefore, the driven roll support frame 16 moves integrally in the front-rear direction as the drive shaft 7 moves in the front-rear direction.
Further, an offset connecting portion 19 as an example of a shift connecting portion extending rearward is formed at the rear end of the driven frame main body 17, and as an example of a connected portion at the rear end of the offset connecting portion 19. As shown in FIG. 4A, an elongated connecting hole 19a extending in the left-right direction is formed.

In FIG. 4A, the driven frame body 17 has a face-down discharge guide 17a as an example of a moving guide portion that extends to the left and guides the recording sheet S conveyed through the face-down discharge path SH6 to the reverse roll Rh2. Is formed.
A pair of front and rear driven roll support portions 17 b are formed at the center portion in the front-rear direction of the driven frame main body 17 so as to correspond to the position of the drive roll main body 8. A pair of front and rear driven roll support members 21 that support the driven discharge roll 6 rotatably and urge the driven discharge roll 6 toward the drive discharge roll 4 are supported by the driven roll support portion 17b. The driven roll support member 21 is configured by a plate spring-like member, and the plate spring-like member is described in, for example, Japanese Patent Application Laid-Open No. 2006-21843, and is well known in the art. Is omitted. The driven roll support member 21 is not limited to a plate spring-like member, and various conventionally known configurations can be employed.

  The driven discharge roll 6 has a driven shaft portion 6 a that is rotatably supported by a pair of front and rear driven roll support members 21. At the center in the front-rear direction of the driven shaft 6a, a barrel-shaped collagulation roll 6b as an example of a bend imparting member for imparting a bend for enhancing straightness to the recording sheet S discharged to the face down tray TRh2. Is supported. Four driven roll main bodies 6c as an example of a driven rotary body disposed to face the drive roll main body 8 are supported at both front and rear ends of the driven shaft section 6a. The driven roll body 6c is normally held by the leaf spring-like driven roll support member 21 in contact with the drive roll body 8.

  4A and 4B, behind the offset connecting arm 19, an offset motor 22 which is an example of a drive source fixedly supported by the discharge device main body 1 and an example of a shift drive source is supported. The offset motor 22 has an offset motor shaft 22a extending downward, and a motor gear 23 is supported on the motor shaft 22a. The offset motor 22 according to the first embodiment is a pulse motor as an example of a drive source that drives forward and reverse rotation according to an input of a pulse signal as an example of a rectangular signal that is a rectangular signal, a so-called stepping motor. It is configured to be able to rotate forward and reverse. The stepping motor is a motor that rotates by a preset angle when one pulse as an example of one rectangular wave is input. The number of pulses per unit time [PPS: Pulses Per By controlling [Seconds], the number of rotations per unit time, that is, the rotation speed is controlled.

  A sector gear 24 as an example of a drive transmission member is disposed between the offset motor 22 and the offset connecting portion 19. The sector gear 24 is rotatably supported by the apparatus main body 1 around a rotation center 24a, and a fan-shaped gear portion 24b as an example of a gear portion is formed on the offset motor 22 side of the rotation center 24a. ing. Gear teeth (not shown) that mesh with the motor gear 23 are formed on the outer periphery of the gear portion 24b. The sector gear 24 has a connecting arm 24c extending from the rotation center 24a to the offset connecting portion 19 side. In FIG. 4B, a connecting projection 24d as an example of a connecting portion that fits into the connecting hole 19a is supported at the tip of the connecting arm 24c.

  Accordingly, when the offset motor 22 is rotated forward and backward, the sector gear 24 rotates around the rotation center 24a, and the connecting projection 24d moves around the rotation center 24a in an arc shape including components in the front-rear direction. At this time, the rotation is transmitted through the connection hole 19a into which the connection protrusion 24d fits, and the drive shaft 7 and the driven roll support frame 16 supported by the drive shaft 7 along the drive shaft 7 movable in the front-rear direction. Move back and forth. Therefore, when the offset motor 22 rotates forward and backward, the drive discharge roll 4 and the driven discharge roll 6 are integrally moved in the axial direction as the medium width direction, that is, the front-rear direction. Therefore, when the recording sheet S is sandwiched between the drive discharge roll 4 and the driven discharge roll 6 and is discharged to the face-down tray TRh2, the recording sheet S is moved by moving in the front-rear direction and discharged. It is possible to perform discharge, so-called offset discharge, with the face-down tray TRh2 being shifted and sorted in the sheet width direction.

FIG. 5 is an explanatory view of the shift discharge mechanism of the first embodiment, FIG. 5A is an explanatory view of the state moved to the reference position, FIG. 5B is an explanatory view of the state moved to the front shift position, and FIG. 5C is the rear shift position. It is explanatory drawing of the state which moved.
In FIG. 4A, the rotation of the offset motor 22 is changed to a so-called home position that is set by detecting a detected portion 19b of the offset connecting portion 19 by a home position sensor SNa as an example of a reference position detecting member. Controlled based on. That is, in the first embodiment, the movement of the discharge rolls 4 and 6 in the front-rear direction, which is the medium width direction, is the reference position shown in FIGS. 4 and 5A and the first shifted discharge position shifted forward from the reference position. Control is performed between a front side shift position shown in FIG. 5B as an example and a rear side shift position shown in FIG. 5C as an example of a second shift discharge position shifted backward from the reference position.

Here, in Example 1, the movement range of each of the discharge rollers 4 and 6 is set in advance so as to be from the front side shift position to the rear side shift position. That is, the range in which the discharge rolls 4 and 6 can move in the front-rear direction is limited to the range in which the connection protrusion 24d can move through the connection hole 19a, and the discharge rolls 4 and 6 move from the front-side shifted position. It is designed in advance so that it cannot move backward from the forward or rearward shift position.
An offset discharge mechanism ZH as an example of a displacement discharge mechanism, which is an example of a discharge member moving body, is configured by the members denoted by reference numerals 7 to 24 and the like.

(Description of medium pressing member)
6A and 6B are explanatory diagrams of the medium pressing member according to the first exemplary embodiment. FIG. 6A is an explanatory diagram illustrating a state where the medium pressing portion has moved to the pressing position. FIG. 6B is an explanatory diagram illustrating a state where the medium pressing portion has moved to the separation position. is there.
In FIG. 3, a pair of front and rear holding guide cases 31 as an example of a container are fixedly supported on the wall surface 2c above the face-down discharge port 2a along the seat width direction. 3 and 6, the pressing guide case 31 is formed with an opening 31a that is open on the downstream side in the sheet discharging direction, and a lifting portion 31b is formed by the lower edge of the opening 31a. 3 and 6, a passage port 31 c is formed at the inner end of the pressing guide case 31.

Inside the presser guide case 31, a slider 32 as an example of a shaft support portion is supported so as to be movable along the sheet discharging direction. In FIG. 3, a groove 32 a extending upward from the lower end is formed at the right end of the slider 32.
A solenoid 33 as an example of a pressing and moving member is supported inside the wall surface 2c. The solenoid 33 has a rod 33a that extends rightward through the passage port 2d and the passage port 31c of the wall surface 2c as an example of an expansion / contraction portion, and the right end of the rod 33a is connected to the left portion of the slider 32. . A coil spring 34 as an example of an urging member for urging the slider 32 to the right is attached to the rod 33a.

In FIG. 6, the operation of the solenoid 33 is controlled in accordance with a control signal from the pressing and moving means C1 of the control unit C. The pressing movement means C1 of the first embodiment has a separation condition storage means C1A that stores preset pressing / separation conditions, and operates the solenoid 33 based on the pressing / separation conditions stored in the separation condition storage means C1A. Control.
In the first embodiment, as a pressing and separating condition, when the type of the recording sheet S is a small medium smaller than a preset size such as “postcard”, when the offset discharge is not performed, the recording sheet S is reversed by duplex printing. When switching back with Rh2, is set, and in these cases, the pressing and moving means C1 performs control so that the solenoid 33 operates.
When the solenoid 33 is not in operation, the slider 32 of the first embodiment passes through the opening 31a as shown in FIG. 6A by the elastic force of the coil spring 34, and the right end portion projects outward. Move to the lifting separation position. Further, when the solenoid 33 is actuated, the rod 33a pulls the slider 32 to the left, and the coil spring 34 is contracted to move to the lifting position moved from the opening 31a to the inside of the pressing guide case 31 as shown in FIG. 6B.

  In the groove portion 32a of the slider 32, a base end portion of a rubber sheet pressing body 36 as an example of a square bar-like elastic material as an example of a pressing portion rotates around a rotation shaft 36a as an example of a rotation center. Supported as possible. In FIG. 3, the sheet pressing body 36 according to the first exemplary embodiment is configured such that from the one end side to the other end side in the sheet thickness direction of the face-down discharge port 2 a, that is, from the upper end to the lower end, with the slider 32 moved to the lifting and separating position. It extends. That is, it is set to a length straddling the face-down discharge port 2a. Further, the surface of the sheet presser main body 36 on the face-down discharge port 2a side cushions when the recording sheet S comes into contact, and extends downward as an example of an elastic member for reducing damage to the recording sheet S. A thin film 37 is supported. The pressing member 36 + 37 of the first embodiment is configured by the sheet pressing main body 36, the rotating shaft 36a, the film 37, and the like.

  Therefore, in the state where the slider 32 is moved to the lifting and separating position shown in FIG. 6A, the sheet pressing body 36 straddles the face-down discharge port 2a in the vertical direction and the surface of the recording sheet S discharged from the face-down discharge port 2a. , Rotates upward and moves to a pressing position where the surface of the recording sheet S can be pressed. When the slider 32 is moved to the lifting position shown in FIG. 6B, the lower surface of the upper end of the sheet pressing body 36 comes into contact with the lifting portion 31b and rotates upward to be separated from the face-down discharge port 2a. It moves to a separation position where it cannot contact the surface of the recording sheet S discharged from the down discharge port 2a.

  In the first embodiment, the discharge roll Rh and the face-up discharge roll Rh3, which are other discharge members, are also offset by the offset discharge mechanism ZH similar to the offset discharge mechanism ZH, similarly to the reverse roll Rh2. The offset discharge between the reference position, the front side shift position, and the rear side shift position is possible. Further, a pressing member similar to the pressing member 36 + 37 corresponding to the reversing roll Rh2 is also arranged for the paper discharge roll Rh and the face-up paper discharge roll Rh3.

(Operation of Example 1)
In the printer U according to the first embodiment having the above-described configuration, when an image forming operation is started, an image is recorded on the recording sheet S by the image recording apparatus PR + G + T1 + T2 + B + F, and the discharge trays TRh to TRh3 are set according to the user's setting. Discharged.
In the printer U according to the first exemplary embodiment, when a small medium such as a postcard is discharged from each discharge roll Rh, Rh2, and Rh3, when offset discharge is not performed, or when the reverse roll Rh2 performs double-sided printing, the first image is printed. When the recording sheet S on which is recorded is switched back, that is, when the pressing / separating condition is satisfied, the solenoid 33 is operated to move the sheet pressing 36 + 37 to the upper pressing / separating position. Therefore, the sheet presser 36 + 37 is held in a state where it does not contact the recording sheet S passing through the discharge rollers Rh to Rh3.

In the case of a small medium such as a postcard, even if the pressing member 36 + 37 is not pressed, the consistency and capacity when loaded on the discharge trays TRh, TRh2, and TRh3 are sufficiently high. May get worse. Further, when offset discharge is not performed or when the double-sided printing is switched back, when the recording sheet S that is in contact is curved in a convex or concave shape along the sheet conveyance direction, that is, in a so-called curled state, the recording sheet is placed on the sheet presser 36 + 37. There is a possibility that S may be caught, and the capacity may be deteriorated, or there may be a conveyance failure, a paper break, a paper wrinkle, a paper jam or the like at the time of switchback.
In the printer U according to the first exemplary embodiment, when these pressing and separating conditions are satisfied, the solenoid 33 is activated and the sheet pressing portion 36 is moved from the pressing position to the separating position, and the sheet pressing 36 + 37 with respect to the recording sheet S. Will not touch. Therefore, in the printer U of the first embodiment, when the sheet presser 36 + 37 comes into contact with the recording sheet S in the face-down tray TRh2, the sheet presser 36 + 37 moves to the separation position and the recording sheet S is moved. Deterioration of the capacity is reduced, and the capacity is improved as a whole.

7A and 7B are explanatory diagrams of the medium pressing member according to the second embodiment. FIG. 7A is an explanatory diagram illustrating a state in which the medium pressing portion has moved to the pressing position. FIG. 7B is an explanatory diagram illustrating a state in which the medium pressing portion has moved to the separation position. is there.
The second embodiment is different from the first embodiment in the following points, but is configured in the same manner as the first embodiment in other points.
In FIG. 7, in the printer U of the second embodiment, the pressing guide case 31, the slider 32, the solenoid 33, and the coil spring 34 of the first embodiment are omitted. Further, on the outside of the wall surface 2c, a shaft support portion 41 that rotatably supports the rotation shaft 36a of the sheet pressing body 36 is fixedly supported on the wall surface 2c. As an example of an interlocking member, an interlocking protrusion 42 extending in the radial direction from the rotating shaft 36a toward the left in FIG. 7A is supported on the rotating shaft 36a.

  As an example of a pressing rotation member, an insulator-like rotation bar 43 is supported at the passage opening 2d so as to be rotatable about a rotation center 43a. The right end of the rotation bar 43 is set so as to be able to contact and non-contact with the interlocking protrusion 42 according to the rotation of the rotation bar 43, that is, engage and disengage. A tension spring 44 that pulls the left end of the rotating bar 43 downward is connected to the left end of the rotating bar 43 as an example of an urging member. Further, a solenoid 46 as an example of an operating member is supported above the left portion of the rotating bar 43, and the tip of the rod 46 a of the solenoid 46 is connected with a necessary play at the left end of the rotating bar 43. ing. The solenoid 46 is controlled by a control signal from the pressing and moving means C1 ′ of the control unit C. The pressing and moving means C1 ′ of the second embodiment is configured in the same manner as the pressing and moving means C1 of the first embodiment.

  Therefore, in a state where the solenoid 46 is not operated, the rotation bar 43 is held in a state where it is not engaged with the interlocking protrusion 42 as shown in FIG. 7A by the elastic force of the tension spring 44. It is supported in a freely rotating state at the pressing position shown in FIG. 7A. Therefore, when the recording sheet S passes, the recording sheet S is rotatable as shown by the broken line in FIG. 7A. When the solenoid 46 is actuated, the rod 46a pulls the left end of the rotation bar 43 upward, the tension spring 44 extends, and the rotation bar 43 rotates around the rotation center 43a as shown in FIG. 7B. Along with this, the right end of the rotation bar 43 comes into contact with and engages with the interlocking protrusion 42, and pushes the interlocking protrusion 42 downward. When the interlocking protrusion 42 is pushed downward, the sheet presser 36 + 37 rotates about the rotation shaft 36a and moves to the separation position shown in FIG. 7B.

(Operation of Example 2)
In the printer U according to the second embodiment having the above-described configuration, as in the first embodiment, when the pressing separation condition is satisfied, the sheet pressing 36 + 37 moves to the separation position and does not contact the passing recording sheet S. Deterioration of capacity and poor conveyance are reduced.

(Example of change)
As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various change is made in the range of the summary of this invention described in the claim. Is possible. Modification examples (H01) to (H011) of the present invention are exemplified below.
(H01) In each of the above-described embodiments, the printer U is illustrated as an example of the image forming apparatus. However, the present invention is not limited to this, and can be applied to a copying machine, a FAX, or a multifunction machine having a plurality of functions. Further, the image forming apparatus is not limited to an electrophotographic image forming apparatus, and can be applied to an image forming apparatus of an arbitrary image forming system such as an ink jet recording system, a thermal head system, or a printing machine such as a lithograph. Further, the image forming apparatus is not limited to a multi-color developing image forming apparatus, and may be configured by a monochromatic, so-called monochrome image forming apparatus. Further, the invention is not limited to the rotary developing device G, and a configuration in which an image holding member, a charger, a latent image forming device, a developing device, and the like are provided for each color, that is, a so-called tandem configuration may be employed.
(H02) In the above-described embodiment, the configuration of the present invention is applied to each of the paper discharge rolls Rh to Rh3 arranged in the printer main body U1 and the optional discharge unit U3. However, the present invention is not limited to this. For example, the configuration of the reverse roll Rh2 Can be applied to other discharge rolls Rh and Rh3. In addition, the configuration of the present invention can be applied to a paper discharge roll disposed in a post-processing apparatus described in JP-A-2006-069748. Similarly, the configuration of the face-down discharge port 2a can be applied to other discharge ports.

(H03) In each of the above embodiments, when the discharge rollers Rh to Rh3 that execute offset discharge are shifted in the front-rear direction, the driven discharge roller 6 and the like move integrally with the drive shaft 7 in the medium width direction. Although illustrated, as disclosed in Japanese Patent Application Laid-Open No. 2005-96889, the hollow shaft that is slidably supported by the drive shaft 7 moves without moving the drive shaft 7 in the medium width direction, and the offset discharge It is possible to make the configuration to perform. In each of the paper discharge rolls Rh to Rh3 in the above embodiment, the corrugation roll 6b is supported by the driven shaft portion 6a. However, as shown in Japanese Patent Application Laid-Open No. 2005-96889, the corrugation roll 6b is driven by the driven shaft portion 6a. It is also possible to have a configuration in which the corrugation roll 6b itself is omitted.

(H04) In each of the above embodiments, each of the paper discharge rolls Rh to Rh3 is configured similarly, but is not limited to this. For example, the face-up paper discharge roll Rh3 is exemplified in the modification example (H03). Each of the paper discharge rolls Rh to Rh3 can be configured differently.
(H05) In the embodiment, the home position sensor SNa is used to detect the reference position of each of the discharge rolls Rh to Rh3. However, the present invention is not limited to this. For example, the home position sensor SNa is omitted and the offset motor 22 is used. It is also possible to control the amount of movement of each of the paper discharge rolls Rh to Rh3 in the medium width direction only by controlling the rotation amount.

(H06) Although it is preferable that each of the paper discharge rolls Rh to Rh3 can be moved in parallel in the medium width direction as in the above embodiment, the present invention is not limited to this, and for example, parallel to the medium width direction. Even with a configuration that does not move, the effects of the present invention can be achieved. For example, the offset discharge mechanism ZH may be configured to be movable in a diagonally forward right direction and a diagonally backward left direction by adding a lateral component that is the medium conveyance direction to the longitudinal direction that is the medium width direction. is there. (H07) In the above-described embodiment, each of the paper discharge rolls Rh to Rh3 is configured to be movable to the three positions of the reference position, the front side shift position, and the rear side shift position under the control of the offset discharge mechanism ZH. However, the present invention is not limited to this, and it is also possible to adopt a configuration that moves to two positions or four or more positions. For example, it is possible to omit either the front side shift position or the rear side shift position and move to the reference position / front side shift position, or the reference position / rear side shift position. .

(H08) In the above embodiment, the offset discharge mechanism ZH controls the rotational drive of the offset motor 22 constituted by the stepping motor to shift the discharge rollers Rh to Rh3 in the front-rear direction. The present invention is not limited, and for example, a configuration in which each of the paper discharge rolls Rh to Rh3 is shifted in the front-rear direction by controlling rotation driving of a normal motor or controlling on / off of an electromagnetic solenoid is also possible. In this case as well, it is possible to achieve the effect of the present invention that makes the shifting sound of the offset discharge mechanism ZH inconspicuous.
(H09) In the above embodiment, the pressing / separating condition is not limited to the case illustrated in the embodiment, and conditions such as addition and deletion can be changed according to the design, specifications, and the like. For example, when printing an image with a high image density, if there is a risk of image quality deterioration such as rubbing due to contact with the sheet presser 36 + 37, the case where the image density is high may be added to the press separation condition. Is possible. In addition, it is also possible to move the sheet presser 36 + 37 according to the rigidity of the medium, so-called waist strength, or to move the sheet presser 36 + 37 according to a medium that is easily bent.

(H010) In the above-described embodiment, the configuration in which the sheet presser 36 + 37 is rotated and moved between the presser position and the separation position is exemplified, but the present invention is not limited to this. For example, the sheet presser 36 + 37 is slid in the sheet width direction. It is supported so that it can be moved between the pressing position inside the width direction end of the recording sheet S and the separation position outside the width direction end, so that the space between the pressing position and the separation position is reached. It is also possible to adopt a configuration in which it is moved. In addition, it is also possible to adopt a configuration in which the sheet press 36 + 37 is moved in the sheet thickness direction to move between the press position and the separation position.
(H011) In the above-described embodiment, the solenoids 33 and 46 are exemplified as the drive source for moving the sheet presser 36 + 37. However, the present invention is not limited to this, and a motor may be used. Therefore, it is possible to use any configuration that can move the sheet presser 36 + 37 between the pressing position and the separation position, such as using a gear or a so-called pinion rack.

2a ... discharge port,
31 ... Container,
31a ... opening,
31b ... Lifting part,
32 ... shaft support,
33 ... holding member for movement,
36 ... holding part,
36a ... rotation center,
36 + 37 ... medium pressing member,
36a ... rotating shaft,
42 ... interlocking member,
43. Holding member rotating member,
C1, C1 ′... Holding movement means,
C1A: separation condition storage means,
PR + G + T1 + T2 + B + F ... Image recording device,
Rh2 ... discharge member,
S ... medium
TRh2 ... loading section,
U: Image forming apparatus,
U3: Medium discharge device,
U4 ... reversing device.

Claims (7)

A stacking unit on which an image-formed medium is loaded;
A discharge member for discharging the medium to the stacking unit;
A medium pressing member disposed on the downstream side in the discharge direction with respect to a discharge port through which the medium discharged to the stacking unit passes, and is supported so as to be rotatable around a rotation center, and the thickness of the medium at the discharge port The medium pressing member having a pressing portion extending from one end side in the vertical direction to the multi-end side, and capable of pressing the medium by the pressing portion contacting the surface of the medium that has passed through the discharge port;
Based on preset pressing and separating conditions, the pressing portion can extend from one end side in the medium thickness direction of the discharge port to the multi-end side and contact the medium surface, and the pressing portion is connected to the discharge port. A pressing movement means for moving the pressing unit between a separation position that is moved in a separating direction and the pressing unit cannot contact the medium surface; and
A medium discharge device comprising: A shaft support portion for supporting a rotation shaft as the rotation center;
An accommodating body having an opening through which the shaft support portion can pass and a lifting portion formed at an edge of the opening, and capable of accommodating the shaft support portion, wherein the shaft support portion is located on the opening side. A lifting separation position where the pressing portion moves away from the lifting portion and moves to the pressing position, and the shaft support portion moves from the opening side to the inside of the container so that the pressing member moves to the lifting portion. And a lifting position that moves to the separated position in contact with the container, the container that movably supports the shaft support portion, and
A pressing movement member that moves the shaft support portion between the lifting position and the lifting separation position;
The pressing and moving means for moving the pressing portion by controlling the pressing and moving member; and
The medium discharging apparatus according to claim 1, further comprising: An interlocking member that is rotatably supported integrally with the pressing portion;
A pressing rotation member engageable with the interlocking member, the pressing rotation member engaging with the interlocking member during operation and rotating the pressing portion in a direction to move from the pressing position to the separation position;
The pressing movement means for moving the pressing portion by controlling the operation of the pressing rotating member;
The medium discharging apparatus according to claim 1, further comprising: Separation condition storage means for storing that the size of the medium is a small medium smaller than a preset size as the pressing separation condition;
The pressing movement means for moving the pressing portion to the separation position when the medium is the small medium based on the pressing separation condition;
The medium discharging apparatus according to any one of claims 1 to 3, further comprising: The discharge member supported so as to be movable in the width direction of the medium, and moved in the width direction of the medium with the medium to be discharged sandwiched therebetween, so that the position is shifted in the width direction of the medium. The discharge member capable of discharging the medium;
Separation condition storage means for storing that the medium is not discharged to a position shifted in the width direction as the pressing separation condition;
The pressing movement means for moving the pressing portion to the separation position when the medium is not discharged to a position shifted in the width direction based on the pressing separation condition;
The medium discharging apparatus according to any one of claims 1 to 4, further comprising: An image recording apparatus for recording an image on a medium;
The medium discharging apparatus according to any one of claims 1 to 5, wherein a medium on which an image is recorded by the image recording apparatus is discharged.
An image forming apparatus comprising: A reversing device for reversing the medium on which the image is recorded on the first side and conveying it to the image recording device;
The discharge member that rotates forward and discharges the medium to the stacking unit, and reversely rotates and conveys the medium toward the reversing device when a medium on which an image is recorded on the first surface approaches,
Separation condition storage means for storing a case of conveying to the reversing device as the pressing separation condition;
The pressing movement means for moving the pressing portion to the separation position when the medium is transported to the reversing device based on the pressing separation condition;
The image forming apparatus according to claim 6, further comprising:

Images