JP2983077B2 - Paper ejection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet discharging device, and more particularly, to a sheet discharging device for discharging a sheet guided on a guide plate onto a sheet tray outside the apparatus by a discharge roller and a driven roller.

[0002]

2. Description of the Related Art In an image reading apparatus such as a facsimile apparatus and a copying machine, and a recording apparatus such as a printer, a document is conveyed and read, and then the document is transported outside the image reading apparatus by a discharge roller and a driven roller. Is discharged and placed on a document tray, or the recording paper on which recording is output is discharged out of the recording apparatus by a discharge roller and a driven roller, and is placed on the recording paper tray.

In an image reading apparatus for such a device, FIG.
As shown in FIG. 1, the paper 1 is conveyed between a lower guide plate 2 and an upper guide plate 3 by a conveying roller 4 and a driven roller 5 which are driven to rotate. The sheet is conveyed to a reading position 8 set between the pressure plates 7. The image of the sheet 1 sequentially conveyed to the reading position 8 is formed by reflecting the reflected light of the light emitted from the light source 9 to the mirrors 10 a to 10.
The light is reflected by c, photoelectrically converted by the photoelectric conversion device 11 or the like, and read as image data. After the image has been read, the sheet 1 is further guided between the lower guide plate 2 and the upper guide plate 3 in the discharge direction, and is set outside the apparatus by a discharge roller 12 and a driven roller 13 that are driven to rotate. The sheet is discharged to the paper tray 14 and placed. Reference numeral 15 denotes an optical axis.

[0004] Looking at the behavior of the paper 1 in this image reading apparatus, the leading end of the paper 1 has a discharge roller 12 and a driven roller.
Until the paper 1 reaches the nip portion, the paper 1 is transported only by the transport force of the transport roller 4, and when the leading end of the paper 1 reaches the nip portion between the discharge roller 12 and the driven roller 13, the paper 1
Receives a transfer force by the transfer roller 4 and the discharge roller 12. Next, when the rear end of the paper 1 passes through the nip portion between the transport roller 4 and the driven roller 5, the paper 1
The sheet 1 receives only the transport force of the sheet 12, but as soon as the rear end of the sheet 1 passes through the nip portion between the discharge roller 12 and the driven roller 13, the sheet 1
Does not receive any transport force, as shown in FIG.
The paper 1 stops while the trailing edge of the paper 1 rides on the discharge roller 12. Here, when the next paper 16 is transported,
As shown in FIG. 24, the paper 16 bends the paper 1 discharged first, the paper 16 pushes the paper 1 out of the paper tray 14 to deteriorate the stacking state of the paper 1, There is a problem that the paper 16 enters and the order of the paper is disrupted.

In order to prevent such problems at the time of discharging the paper, a paper discharging device has conventionally been configured such that a paper discharging rubber 18 is attached to a driving shaft 17 for rotating the discharging roller 12 as shown in FIGS. Attached. The paper discharge rubber 18
It is formed of a flexible member with a predetermined rubber hardness, and the paper discharge rubber
The arm 18 protrudes from the outer peripheral surface of the discharge roller 12
The arms 18a and 18b are formed so that the arms 18a and 18b are rotated in the same direction as the discharge roller 12 to project the rear end of the discharged paper to securely discharge the paper.
I knocked it down to 14.

A paper discharge rubber 19 as shown in FIG.
a and 19b are attached to the drive shaft 17 of the discharge roller 12, and as shown in FIG.
Is designed so that the rear end of the sheet 1 discharged by the arm is cut out and knocked down onto the sheet tray 14 reliably. Reference numeral 20 denotes a support shaft of the driven roller 13.

[0007] Further, as shown in FIG.
A document sending member 23 is attached to a drive shaft 22 to which 21a to 21c are attached.
a and 23b are press-fitted, and the document sending members 23a and 23b
Rotates synchronously with the discharge rollers 21a to 21c. Fixed shaft 24
Are fixed to the ADF (Auto Document F-eeder) side, and rotating members 25a to 25c are loosely fitted to the fixed shaft 24. The rotating members 25a to 25c are synchronized by friction with the discharge rollers 21a to 21c. Rotate. The original is conveyed on a guide plate (not shown) in the direction of the arrow in the figure and is discharged.
For the document separated from the contact surface between the discharge rollers 21a to 21c and the rotating members 25a to 25c, the rear ends of the document are pushed out in the discharge direction by the protrusions 23c to 23f formed on the document sending members 23a and 23b, and are forcibly forced. Is discharged. Therefore, protrusions 23c to 23f projecting from the outer peripheral surfaces of the discharge rollers 21a to 21c are formed of elastic members on the outer periphery of the document sending members 23a and 23b, and the forced discharge of the document is performed by these protrusions 23c to 23f. Is possible. 26a and 26b are fixed shafts.
A spacer which is attached to 24 and maintains the interval between the rotating members 25a to 25c.

However, in such a conventional paper discharge device, an arm formed on a paper discharge rubber attached to strike a discharged paper on a paper tray projects beyond the outer peripheral surface of the discharge roller. When one arm knocks down the trailing end of the ejected sheet, the other arm lifts the sheet for which the image is being read, and as shown in FIG. The arms 18a and 18b of the rubber 18 move the paper 21 on which the image is being read in the vertical and horizontal directions in the figure to vibrate the image of the paper at the reading position 8, thereby deteriorating the quality of the read image. In addition, this problem becomes more remarkable as the distance between the transport roller and the discharge roller becomes shorter with the recent miniaturization of the apparatus.

The paper discharge device shown in FIG. 29 also has protrusions 23c to 23f formed on the outer periphery of the document sending members 23a and 23b.
Are protruded from the outer peripheral surfaces of the discharge rollers 21a to 21c, so that the document surface being discharged is intermittently flipped up and vibrated, thereby deteriorating the image quality of the read image. In order to solve this problem, the document sending members 23a, 23b
Some cover the discharge means so as not to protrude from the outer peripheral surface of the discharge rollers 21a to 21c. However, there is a problem that the document sending member is worn or deformed. This causes new problems such as scratching the surface and generating paper dust.

A description will be given of a conventional example of a sheet discharging apparatus which solves these problems.

FIGS. 1 to 16 and FIGS. 19 to 21 are views showing an example of an improved conventional paper discharging apparatus. The paper discharging apparatus shown in FIGS. The same components as those described above are denoted by the same reference numerals and description thereof is omitted.

FIG. 1 and FIG. 2 are main part configuration diagrams of a paper discharge device 31 using an elastic pressing member. A rigid pressing member (pressing member) 32 formed of a rigid member on the discharge side with respect to the discharge roller 12 is shown. , 33 are provided. The rigid pressing members 31 and 32 have a discharge roller 12 and a driven roller 13 depending on the shape of the tip.
The ejected sheet acts on the sheet tray 14 in such a manner as to press the ejected sheet toward the sheet tray 14, and the ejected sheet is ejected onto the sheet tray 14 without the trailing end of the sheet being laid on the outer peripheral surface of the ejection roller 12. .

Therefore, even if the paper sheet during image reading is being discharged by the discharge roller 12, the paper discharge device 31 is restrained downward by the rigid pressing members 32 and 33, and the flutter is suppressed. When it is discharged,
The paper is pushed down in the direction of the paper tray 14 by the rotational force of the discharge roller 12, and the discharged paper is reliably placed on the paper tray 14. As a result, the paper can be discharged smoothly without fluttering in the image reading device, and the image quality of the image read by the document reading device and the image recorded by the recording device can be improved.

However, since the rigid pressing members 32 and 33 forcibly change the paper discharge direction, they only press the paper above the discharge roller 12 in the drawing, and thus the paper is pressed in the paper tray 14 direction. Is relatively small.

Therefore, as shown in FIGS. 3 and 4, between the drive shaft 17 of the discharge roller 12 of the paper discharge device 41 and the drive shaft 20 of the driven roller 13, the sheet is bent toward the discharge roller 12 and disposed. Elastic pressing member (pressing member) formed of elastic member 4
When the elastic pressing members 42 and 43 are provided, the elastic pressing members 42 and 43 are pressed by the stiffness of the paper 44 being discharged by the discharge roller 12 to be elastically deformed and bent in the discharging direction as shown in FIG. The members 42 and 43 act to press the sheet 44 downward in the figure, and maintain the discharge direction of the sheet 44.

Next, as shown in FIG. 6, when the paper 44 is discharged, the paper 44 is no longer pushed by the stiffness on the elastic pressing members 42 and 43 and returns to its original shape. Push the rear end toward the paper tray 14
The paper 44 is securely placed on the paper tray 14.

Therefore, the paper is not fluttered at the image reading position while the paper 44 is being ejected by the elastic pressing members 42 and 43, and the rear end of the paper 44 is ejected when the paper 44 is discharged. The paper 44 is pushed with a predetermined pressing force when returning to the state, so that the paper 44 is reliably pushed out and placed on the paper tray 14. As a result, by applying this paper discharge device 41 to a document reading device or a recording device, the paper being read is discharged by the discharge roller.
Even when the sheet is being ejected by 12, the elastic pressing members 42 and 43 suppress the sheet from flapping, thereby suppressing flapping.
When the paper 44 is discharged from the paper tray 12, it is pushed down in the direction of the paper tray 14 by the elastic force of the elastic pressing members 42 and 43, and the discharged paper 44 is still reliably placed on the paper tray 14.

However, the shape of the elastic pressing members 42 and 43 is not limited to these. For example, even when the elastic pressing member 45 having a shape as shown in FIG. 7 is provided, as shown in FIG. Since the paper 44 being discharged by the discharge roller 12 is pressed by the stiffness of the paper 44 and is elastically deformed and bent in the discharge direction, the elastic pressing members 42 and 43 act to press the paper 44 downward in the drawing, thereby changing the discharge direction. Can be maintained.

When the elastic pressing members 42, 43, and 45 are made of metal, the elastic pressing members 42, 43, and 45 are susceptible to deformation due to external force and inferior in durability. Other materials are considered to be weak against charging and wear.

On the other hand, as shown in FIGS. 9 to 11, in a paper discharge device 51 using a rotary type pressing member, a rotary pressing mechanism 52 is provided.
Is provided. In the rotation pressing mechanism 52, one end 53a of a rotation member (pressing member) 53 is rotatably mounted on a predetermined support shaft 54, and a stopper 55 for restricting a standby position of the rotation member 53 is provided. I have. The rotation pressing mechanism 52 is
As shown in 10, the paper being discharged by the discharge roller 12
Due to the contact between 56 and the pressing portion 53b formed on the rotating member 53,
The rotating member 53 rotates in the discharging direction in the drawing, and
Is pressed downward in the figure to maintain the discharge direction of the paper 56.

Next, as shown in FIG. 11, when the paper 56 is discharged, the rotating member 53 is returned to the original position and the stopper 55
The paper 56 is maintained at the standby position, and the rear end of the paper 56 is pressed against the discharge roller 12, and the rotational force of the discharge roller 12 acts to push the paper 56 toward the paper tray 14, thereby securely transferring the paper 56 to the paper tray 14. Place on top.

Therefore, the paper 56 is
The paper 56 does not flutter at the image reading position during discharge, and the paper 56 is discharged from the paper tray 14 because the rear end of the paper 56 is pressed against the discharge roller 12 when the rotating member 53 returns to the original position. It is reliably pushed out and placed. as a result,
By applying the paper discharge device 51 to a document reading device or a recording device, even if the paper during image reading is being discharged by the discharge roller 12, the paper is suppressed downward by the rotation pressing mechanism 52, and the fluttering is suppressed. When the paper is discharged from the discharge roller 12, the paper tray is rotated by the rotation position of the pressing member 53.
Pressed down in the 14 direction, the discharged paper 56 is securely placed on the paper tray 14.

Further, as in a paper discharge device 61 shown in FIGS. 12 to 15, the support shafts of the rotary pressing mechanisms 62 and 63 are
May be the same as the support shaft 20 of FIG. This rotary pressing mechanism 62
As shown in FIGS. 12 and 13, rotating members (pressing members) 65 and 66 are rotatably supported by the drive shaft 20 via bearings 64, and spring members 67 and 66 are attached to the rotating members 65 and 66. And 68, the force for pressing the sheet toward the discharge roller 12 is adjusted. Further, the standby positions of the rotating members 65 and 66 are limited by stoppers 69 and 70.

As shown in FIG. 14, when the paper 71 being discharged by the discharge roller 12 contacts the rotating member 65, the rotating pressing mechanism 62 rotates the rotating member 65 in the discharging direction in the drawing. The rotating member 65 acts to press the sheet 71 downward in the figure by adjusting the force of the spring 67, and maintains the sheet 71 in the discharge direction.

Next, as shown in FIG. 15, when the paper 71 is discharged, the rotating member 65 is returned to the original position and the stopper 69 is moved.
The paper 71 is maintained at the standby position, and the rear end of the paper 71 is pressed against the discharge roller 12, and the rotational force of the discharge roller 12 acts to push the paper 71 toward the paper tray 14, thereby securely transporting the paper 71 to the paper tray 14. Place on top.

Therefore, the paper is not fluttered at the image reading position while the paper 71 is being ejected by the rotation pressing mechanisms 62 and 63, and when the paper 71 is ejected, the rear end of the paper 71 is moved to the original position. The paper 71 is pressed against the discharge roller 12 when returning to
Is reliably pushed out onto the paper tray 14. As a result, by applying the sheet discharging device 61 to a document reading device or a recording device, even if the sheet during which the image is being read is being discharged by the discharging roller 12, the sheet is suppressed downward by the rotary pressing mechanisms 62 and 63. When the paper is ejected from the ejection roller 12, the paper 71 is pushed down in the direction of the paper tray 14 by the rotating position of the rotating members 65 and 66, and the ejected paper 71 is securely placed on the paper tray 14. Is placed. As a result, the paper 71 can be discharged smoothly, and the image quality of the image read by the document reading device and the image recorded by the recording device can be improved.

Further, since the support shafts of the rotating members 65 and 66 are coaxial with the driven roller 13, the space for disposing the rotating pressing mechanisms 62 and 63 is reduced, and the size of the sheet discharging device 61 can be reduced. Relatively easy.

Further, as shown in FIG. 16, the shape of the rotating member 65 is a rotating member 72 having a concave portion formed in a portion in contact with the rear end of the sheet 71, so that the sheet 73 having a strong upper curl is discharged. When the paper tray is
Some are placed on top of 14.

FIGS. 19 and 20 show another conventional sheet discharging apparatus 91.
The paper discharge device 91 has a fixed shaft 24 on which a rotating member 92 formed longer than the mounting interval between the document sending members 23a and 23b is rotatably fitted and mounted. The member 92 also has a function as a driven roller. 93a and 93b are the rotating member 92 and the rotating members 25a and 25b
It is a spacer for maintaining an attachment interval with the spacer.

In FIG. 19, the rotating member 92 is synchronously rotated by friction with the discharge rollers 21a to 21c.
Projection portions 23c- formed on document sending members 23a and 23b
23f is also in contact with the rotating member 92 while rotating, and the projecting portion 23
As shown in FIG. 20, c to 23f are elastically deformed by the rotating member 92 and are bent so as not to protrude from the outer peripheral surfaces of the discharge rollers 21a to 21c.

Therefore, as shown in FIG.
The projections 23c to 23 of the document sending members 23a and 23b are placed on the surface of the document being discharged by the discharge rollers 21a to 21c while being guided on the top 94.
It is possible to prevent the document from flicking and hit, and prevent the document image from being vibrated, thereby smoothly discharging the document.

FIG. 21 is a diagram showing a main part of a paper discharge device 95 in which a rotating member is provided for each document sending member.
In this example, the rotating member 92 integrated with the sheet discharging device 91 shown in FIG. 19 is divided into lengths that are in contact with the document sending members 23a and 23b and provided independently.

Therefore, the rotating member 97 is connected to the original sending member 23.
a, the protruding portions 23c, 23d are bent so as not to protrude from the outer peripheral surface of the discharge roller 21b. Similarly, the rotating member 98 rotates in contact with only the document sending member 23b, and the protruding portion 23e, 23f is bent so as not to protrude from the outer peripheral surface of the discharge roller 21b.

As a result, the projections 23 of the document sending members 23a and 23b are placed on the surface of the document being discharged by the discharge rollers 21a to 21c.
It is possible to prevent the document from being flipped up when c to 23f hits, to prevent the document image from vibrating, and to smoothly discharge the document.

[0035]

However, each of these improved prior arts requires a rather complicated mechanism and has a problem that the discharge performance is not sufficient. The present invention provides a paper discharge mechanism that reliably improves discharge performance with a simple mechanism.

[0036]

According to the first aspect of the present invention,
A discharge roller that is driven to rotate and discharges the sheet out of the apparatus, a driven roller that is driven to contact the discharge roller and discharges the sheet out of the apparatus together with the discharge roller, and guides the sheet conveyed to the discharge roller and the driven roller. A guide member, a paper tray on which the paper discharged by the discharge roller and the driven roller is placed, and a paper tray mounted on an axial end of the discharge roller so as to rotate in the same direction as the discharge roller, An arm protruding from the outer peripheral surface of the discharge roller is formed by an elastic member, and a pressing member that presses the rear end of the discharged paper toward the paper tray by the arm is provided. , Which is discharged out of the device by rotating discharge rollers and driven rollers,
In a paper discharge device in which the trailing end of the discharged paper is pressed by an arm of a pressing member and the paper is placed on a paper tray, the guide member is moved to a nip position between the discharge roller and a driven roller by the pressing member. A guide assisting member is provided to cover the upper part of the rotating arm and prevent contact between the arm and the sheet.

[0037]

According to the first aspect of the present invention, the arm that projects from the outer peripheral surface of the discharge roller to the nip position between the discharge roller and the driven roller is formed by the elastic member on the guide member that guides the paper in the discharge direction, and the sheet is discharged. A guide auxiliary member is provided to cover the upper part of the rotating arm of the pressing member that presses the rear end of the sheet to be pressed in the sheet tray direction by the arm to prevent the arm from contacting the sheet. Therefore, the sheet is guided to the contact position between the discharge roller and the driven roller without contacting the arm, thereby preventing the sheet from being affected.

As a result, when the paper discharge device is applied to a document reading device or a recording device, the paper can be smoothly discharged by a simple mechanism without affecting the sheet conveyance. It is possible to improve the image quality of the image read by the printer and the image recorded by the recording device.

A description will now be given based on the illustrated embodiment. Figure
FIGS. 17 and 18 are main part configuration diagrams of a paper discharge device 81 to which the present invention is applied.
Arms 18a, 18 formed on the paper discharge rubber 18 shown in 6)
The lower guide plate 82 is extended to the nip portion of the discharge roller 12 and a driven roller (not shown) so that the lower guide plate 82a does not contact the paper being discharged, and the auxiliary guide plate 82a is formed so as to cover the arms 18a and 18b. The rollers 12 can prevent flapping of the paper generated when the arms 18a and 18b of the paper discharge rubber 18 come into contact with the paper being discharged.

Accordingly, the original function of the paper discharge rubber 18 is reliably exhibited, and the rear end of the paper discharged by the arms 18a and 18b is pushed out toward the paper tray 14 to place the paper on the paper tray 14. Let it. As a result, by applying the paper discharging device 81 to a document reading device or a recording device, even if the paper for which an image is being read is being discharged by the discharging roller 12, the arms 18a and 18b of the paper discharging rubber 18 can discharge the paper. The lifting action is suppressed by the auxiliary guide plate 82a, and the fluttering of the sheet is suppressed. When the sheet is ejected from the ejection roller 12, the sheet tray is moved by the arms 18a and 18b.
Pressed down in the 14 direction, the discharged paper is securely placed on the paper tray 14 and the paper can be discharged smoothly, and the image quality of the image read by the document reading device and the image recorded by the recording device is improved. Can be improved.

[0041]

According to the present invention, an arm protruding from the outer peripheral surface of the discharge roller to the nip position between the discharge roller and the driven roller is formed by the elastic member on the guide member for guiding the sheet in the discharge direction, and the sheet is discharged. A guide auxiliary member is provided to cover the rotating arm of the pressing member that presses the rear end of the paper sheet in the direction of the paper tray by the arm and to prevent the arm from contacting the paper, so that the paper comes into contact with the arm. Thus, the sheet can be guided to the nip position between the discharge roller and the driven roller, and it is possible to prevent the sheet from being affected.

As a result, when the paper discharge device is applied to a document reading device or a recording device, the paper can be smoothly discharged by a simple mechanism without affecting the sheet conveyance. It is possible to improve the image quality of an image read by a computer or an image recorded by a recording apparatus.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part configuration of an example of a conventional paper discharge device.

FIG. 2 is a side view of a main part configuration of FIG. 1;

FIG. 3 is a perspective view of a configuration of a main part of another example of the conventional sheet discharge device.

FIG. 4 is a side view of a main part configuration of FIG. 3;

FIG. 5 is a view for explaining an elastic pressing member during discharge of a sheet by the sheet discharge device of FIG. 3;

FIG. 6 is a view for explaining an elastic pressing member after a sheet is discharged by the sheet discharge device of FIG. 3;

FIG. 7 is a main part configuration diagram of another example of a conventional paper discharge device.

FIG. 8 is a view for explaining the operation of an elastic pressing member during discharging of a sheet by the sheet discharging device of FIG. 7;

FIG. 9 is a main part configuration diagram of another example of the conventional paper discharge device.

FIG. 10 is a view for explaining the operation of a rotary pressing mechanism during ejection of a sheet by the sheet ejection device of FIG. 9;

FIG. 11 is a diagram for explaining the operation of the rotary pressing mechanism after the paper is discharged by the paper discharge device of FIG. 9;

FIG. 12 is a perspective view of a configuration of a main part of another example of the conventional paper discharge device.

FIG. 13 is a side view of the sheet discharging device of FIG. 12;

FIG. 14 is a diagram for explaining the operation of the rotary pressing mechanism during discharging of a sheet by the sheet discharging device of FIG. 12;

FIG. 15 is a view for explaining the operation of the rotary pressing mechanism after the paper is discharged by the paper discharge device of FIG. 12;

FIG. 16 is a main part configuration diagram of another example of a conventional paper discharge device.

FIG. 17 is a plan view of a main configuration of a sheet discharging device according to an embodiment of the present invention.

FIG. 18 is a side view of the sheet discharging device of FIG. 17;

FIG. 19 is a main part configuration diagram of another example of a conventional paper discharge device.

FIG. 20 is a view for explaining the operation of the rotating member while the paper is being discharged by the paper discharge device of FIG. 19;

FIG. 21 is a main part configuration diagram of another example of a conventional paper discharge device.

FIG. 22 is a schematic configuration diagram illustrating an example of a document reading apparatus to which a conventional sheet discharging apparatus is applied.

FIG. 23 is a view for explaining an operation at the time of paper discharge in a conventional paper discharge device.

FIG. 24 is a diagram for explaining the operation of a conventional paper discharge device when discharging paper.

FIG. 25 is a plan view of a schematic configuration of a conventional paper discharge device to which a paper discharge rubber is attached.

FIG. 26 is a side view of the sheet discharging device of FIG. 22.

FIG. 27 is a perspective view of a schematic configuration of a paper discharge device to which another conventional paper discharge rubber is attached.

FIG. 28 is a diagram for explaining the operation of the paper discharge rubber when discharging paper in the paper discharge device of FIG. 24;

FIG. 29 is a perspective view of a schematic configuration of a paper discharge device to which a conventional document sending member is attached.

FIG. 30 is a view for explaining the behavior of a sheet being conveyed in a conventional sheet discharge device to which a sheet discharge rubber is attached.

[Explanation of symbols]

 12, 21a to 21c Discharge roller 13 Follower roller 14 Paper tray 17, 22 Drive shaft 18 Paper discharge rubber 20 Support shaft 24 Fixed shaft 31, 41, 51, 61, 71, 81, 91, 95 Paper discharge device 32, 33 Rigidity Pressing members 42, 43, 45 Elastic pressing members 44, 56, 71, 73 Paper 52, 62, 63 Rotating pressing mechanism 53, 65, 66, 72 Rotating member 54 Support shaft 55, 69, 70 Stopper 67, 68 Spring 82 Lower guide plate 82a Auxiliary guide plate 92, 96-98 Rotating member 94 Guide plate

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65H 29/00-29/70

Claims (1)

(57) [Claims] A discharge roller that is driven to rotate and discharges the sheet out of the apparatus; a driven roller that is driven to contact the discharge roller and discharges the sheet out of the apparatus together with the discharge roller; and a conveyance roller that is conveyed to the discharge roller and the driven roller. A guide member for guiding a sheet to be ejected, a sheet tray on which the sheet ejected outside the apparatus by the ejection roller and the driven roller is placed, and an axial end of the ejection roller that rotates in the same direction as the ejection roller. And a pressing member which is formed of an elastic member, and which presses the rear end of the discharged paper toward the paper tray by the arm. The ejected sheet is ejected out of the apparatus by a rotating ejection roller and a driven roller, and the trailing end of the ejected sheet is pressed by an arm of a pressing member. In a paper discharge device for placing paper on a paper tray, the guide member covers the upper part of the rotating arm of the pressing member up to the nip position of the discharge roller and the driven roller, and prevents the contact between the arm and the paper. A sheet discharging device provided with an auxiliary member.