JPH04246054A - Paper discharger - Google Patents

Abstract

PURPOSE:To discharge a sheet of paper to a position apart from a discharge roller as improving the extent of conveyability for the paper discharge roller or the like as well as to improve the extent of mountability onto a paper tray, at a time when the paper so far guided on a guide plate is discharged and mounted onto a tray other than equipment by the discharge roller and a driven roller, in this invented paper discharger. CONSTITUTION:Paper 16 is guided into a discharge roller 27 and a driven roller 28 by a guide member 30, while these rollers 27, 28 are rotated, discharging the paper 16 onto a paper tray 5 other than equipment. An arm 40 projecting outward from the outer circumferential surface is formed in either of this discharge roller 27 or driven roller 28 with a elastic material, and a projection 41 jutting out in the rotational direction of the discharge roller 27 or driven roller 28 is formed in a tip part of the arm 40. In addition, a guide auxiliary member 42, which covers an upper part of the arm 40 and keeps off any contact between the arm 40 and the paper 16, is installed in a range up to the vicinity of a contact position between these rollers 27 and 28.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper ejecting device, and more particularly to a paper ejecting device that ejects paper guided on a guide plate onto a paper tray outside the device by means of an ejecting roller and a driven roller.

0002

2. Description of the Related Art In image reading devices such as facsimile machines and copying machines, as well as recording devices such as printers, after a document is conveyed and read, it is ejected from the image reading device by a discharge roller and a driven roller. The recorded paper is ejected and placed on the document tray, and the printed and output recording paper is ejected out of the recording apparatus by an ejection roller and a driven roller and placed on the recording paper tray.

[0003] As a paper ejecting device for such equipment,
Conventionally, as shown in FIG.
and the upper guide plate 53 guide the paper ejection roller 54 and the driven roller 55, and rotate the paper ejection roller 54.
A paper 51 is discharged and placed on a paper tray 56 installed outside the device by a paper discharge roller 54 and a driven roller 55. In addition, as described in Japanese Utility Model Application Publication No. 62-47564, conventionally, in a printing device for forms, a rotatable motor is provided downstream of the printing position in the conveyance direction of forms conveyed by a guide member. What is disclosed includes a blade structure and a rotational drive mechanism that rotationally drives the blade structure. This printing device for forms was devised in order to deal with the problem of forms with folded or bent paper corners getting stuck on the guide member after printing and not being conveyed smoothly. By rotationally driving the blade structure to transport the printed forms without getting caught in the guide member, it is attempted to transport the printed forms in a stable manner.

[0004] Furthermore, conventionally, Utility Model Application No. 107045
As described in the publication, in a device that feeds a plate-shaped material by rotation of a roll, the distance from the center of rotation of the roll to the tip of the roll is shown on the outer peripheral surface of the roll, and the distance from the center of rotation of the roll to the surface of the plate-shaped material is A configuration in which one or more flexible tongue-shaped wings are protruded so as to be shorter than the distance is disclosed. This feed roller is used in a device for feeding roll paper and other thin plate-like materials, and conventionally, feed rollers for these plate-like materials have been made of elastic materials such as rubber or resin and have a smooth circumferential surface. was used, but it was devised in response to the problem that paper dust and dirt adhere to the surface of the feed roller during use, reducing friction and reducing the feed roller's ability to feed sheet materials. It is. This feed roller is
A tongue-shaped wing body made of flexible material is provided on the roll surface to improve the frictional force against the plate material and improve the feeding performance of the plate material by the feed roller. The aim is to maintain initial performance over a long period of time by releasing attached paper dust and dirt.

[0005]

However, in such a conventional paper ejection device, the paper is guided toward the ejection roller and the driven roller by the lower guide plate and the upper guide plate, and the paper is guided toward the ejection roller and the driven roller. The paper was rotated, and the paper was ejected and placed on a paper tray installed outside the device using a paper ejection roller and a driven roller, so the paper ejection roller did not have enough force to kick the paper far, and the paper was ejected. The paper remained near the paper roller and could not be placed properly. Therefore, in order to properly place the paper on the paper tray without leaving any paper near the paper ejection roller, it is necessary to increase the height difference between the paper ejection roller and the paper tray. As a result, when a conventional paper ejecting device is applied to a device, there is a problem that the device becomes larger.

[0006] In order to solve this problem, the document printing device and the tongue-like wing body of the feed roller described in Japanese Utility Model Application Publications No. 62-47564 and No. 60-107045 are used to eject paper. It is possible to attach it to the paper ejection roller of the device, but if such a conventional tongue-like wing body is applied to the paper ejection roller, etc., the force with which the tongue-like wing body kicks the paper onto the paper tray will be weak. Not only is it not possible to obtain a sufficient effect, but the paper that has been guided toward the paper discharge roller by the guide plate hits the tongue-shaped wing body, which impedes the smooth conveyance of the paper. As a result, when such a paper ejection device is applied to a document reading device, a recording device, etc., a new problem arises in that the paper conveyance speed changes, affecting the read image and recording quality. .

[0007]

[Means for solving the problem] The invention according to claim 1 includes:
A discharge roller that is rotationally driven and discharges the paper out of the device, a driven roller that contacts and follows the discharge roller and discharges the paper together with the discharge roller out of the device, and a driven roller that guides the paper conveyed to the discharge roller and the driven roller. The paper tray is equipped with a guide member and a paper tray on which the paper ejected out of the device by the ejection roller and the driven roller is placed, and the paper guided on the guide member is transferred to the device by the rotating ejection roller and the driven roller. In a paper ejection device that ejects the paper to the outside and places it on a paper tray, an arm is formed on one of the ejection roller or the driven roller by an elastic member and projects outward from the outer peripheral surface of the ejection roller or the driven roller; The arm is characterized in that a protrusion is formed at the distal end of the arm to protrude in the rotational direction of the ejection roller or the driven roller. A driven roller that contacts and follows the roller and discharges the paper out of the device together with the discharge roller; a guide member that guides the paper conveyed to the discharge roller and the driven roller; a paper tray on which the paper is placed, the paper guided on a guide member is ejected out of the device by a rotating ejection roller and a driven roller, and the paper is placed on the paper tray. , an arm made of an elastic member is formed on one of the ejection roller or the driven roller and protrudes outward from the outer circumferential surface of the ejection roller or the driven roller; A guide auxiliary member is provided on the guide member, the guide member having a protrusion projecting from the side, and covering the rotating arm up to the vicinity of the contact position between the discharge roller and the driven roller and preventing the arm from coming into contact with the paper. It is characterized by

[0008]

According to the first aspect of the invention, the paper is guided to the discharge roller and the driven roller by the guide member, and the discharge roller is rotationally driven. This discharge roller is brought into contact with the driven roller, and the driven roller is rotated together with the discharge roller. The conveyed paper is discharged onto a paper tray outside the device by rotating the discharge roller and the driven roller. An arm protruding outward from the outer circumferential surface of the ejection roller or driven roller is formed on one of the ejection roller or the driven roller, and an arm is formed of an elastic material on one side of the ejection roller or the driven roller. A protrusion is formed that protrudes in the direction of rotation. Therefore, due to the elasticity of the arm and the protrusion formed on the arm, the paper can be kicked away from the ejection roller and the driven roller, and the paper can be ejected to a position away from the ejection roller and the driven roller.
It can be placed properly on the paper tray. As a result, the paper can be properly placed on the paper tray without increasing the height difference between the ejection roller or driven roller and the paper tray, improving the ease of placing the paper on the paper tray. It is possible to downsize the paper ejecting device and, by extension, the document reading device and recording device to which the paper ejecting device is applied. Furthermore, since a protrusion is formed at the tip of the arm that protrudes in the rotational direction of the ejection roller or driven roller, it is possible to prevent the paper from being caught by the arm, and it is possible to convey the paper smoothly. Therefore, when the paper ejecting device is applied to a document reading device or a recording device, the paper can be ejected smoothly without affecting the conveyance of the paper, and images read by the document reading device or recorded by the recording device can be The image quality of images can be improved.

According to the second aspect of the invention, the paper is guided to the discharge roller and the driven roller by the guide member, and the discharge roller is rotationally driven. This discharge roller is brought into contact with the driven roller, and the driven roller is rotated together with the discharge roller. The conveyed paper is discharged onto a paper tray outside the device by rotating the discharge roller and the driven roller. An arm protruding outward from the outer peripheral surface of the ejection roller or driven roller is formed on one of the ejection roller or the driven roller, and an arm is formed from an elastic member on one side of the ejection roller or the driven roller. A protrusion is formed that protrudes in the direction of rotation. Furthermore, a guide auxiliary member is disposed close to the contact position between the discharge roller and the driven roller to cover the upper side of the rotating arm and prevent contact between the arm and the paper. Therefore, the paper is guided to the contact position between the discharge roller and the driven roller without contacting the arm, and it is possible to prevent the conveyance of the paper from being affected. As a result, when this paper ejecting device is applied to a document reading device or a recording device, it is possible to eject the paper smoothly without affecting the conveyance of the paper. The image quality of recorded images can be improved. In addition, the elasticity of the arm and the protrusion formed on the arm allow the paper ejected onto the paper tray outside the device by the ejection roller and the driven roller to be kicked away from the ejection roller and the driven roller and away from the paper tray. can be placed properly on top. As a result, the paper can be properly placed on the paper tray without increasing the height difference between the ejection roller or driven roller and the paper tray, improving the ease of placing the paper on the paper tray. It is possible to downsize the paper ejecting device and, by extension, the document reading device and recording device to which the paper ejecting device is applied.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 9 are diagrams showing an embodiment of a paper ejection device according to each invention of the present application. FIG. 1 is a schematic configuration diagram of a document reading device 1 to which a paper ejection device of each invention of the present application is applied.
The document reading device 1 includes a document reading section 3 housed inside a main body 2. A book-type document table 4 is formed at the top of the main body 2, and a document holding plate 5 is provided above the book-type document table 4.
is installed. The document holding plate 5 is attached to a document conveying device 6, and a document table 7 is further attached to the document conveying device 6 above the document holding plate 5. A plurality of single-sheet type originals can be set on the original table 7, and the original conveyor 6 transfers the originals set on the original table 7 to a reader formed above the main body 2 below the original transporter 6. The document is conveyed to position 8 , and the document read by document reading section 3 at reading position 8 is discharged onto document holding plate 5 .

The document reading section 3 includes a light source 10 and a mirror 1.
1, 12, 13, a lens 14, a photoelectric conversion element 15, etc., and projects light from a light source 10 onto a reading position 8 or a book-type document table 4. The light projected onto the reading position 8 or the book-type document table 4 is reflected by the document 16 conveyed or set on the reading position 8 or the book-type document table 4, and is transmitted through the mirrors 11, 12, 13 and the lens 14 to a photoelectric source. The light is input to the conversion element 15. Photoelectric conversion element 15
performs photoelectric conversion on incident light and outputs it as image data.

As shown in FIG. 2, the document conveyance device 6 includes a document feed roller 21, a driven roller 22, conveyance rollers 23, 24, 25, 26, a discharge roller 27, a driven roller 28, an upper guide plate 29, and a lower guide plate 29. It includes a guide plate 30, a motor 31, and the like. The motor 31 is connected to the document feed roller 21 and the transport roller 2.
3, 24, 25, 26 and the discharge roller 27 are rotationally driven. The document conveying device 6 feeds out the document 16 set on the document table 7 using a document feed roller 21 and a driven roller 22, and transports the document 16 set on the document table 7 by conveying rollers 23, 24, 25, 2.
6 to the reading position 8. The image information of the original is read by the original reading unit 3 at the reading position 8, and the original 16 from which the image information has been read is transferred to the upper guide plate 29 and the lower guide plate 3.
0 and is conveyed to the discharge roller 27 and the driven roller 28. The discharge roller 27 is rotationally driven by the motor 31, and the driven roller 28 is driven by the discharge roller 27.
contact and follow. These discharge rollers 27 and driven rollers 28 discharge the transported original 16 onto the original holding plate 5 outside the original conveyance device 6, and place the original 16 on the original holding plate 5. Therefore, the document holding plate 5 also serves as a document tray (paper tray).

As shown in FIG. 3, the driven roller 28 that contacts and follows the discharge roller 27 is
A plurality of arms 40 are attached that protrude outward from the outer peripheral surface of the holder, and the arms 40 are made of a highly elastic material such as urethane rubber, chloroprene rubber, or polyester film. As shown in FIG. 4, a protrusion 41 that protrudes in the rotational direction of the driven roller 28 (indicated by an arrow in FIG. 4) is formed at the tip of the arm 40. roller 2
It protrudes like a rod in the direction of rotation of the arm 8 and has a substantially L-shape integrally with the arm 40.

Note that the protrusion formed on this arm 40 is as follows:
The protrusion 42 is not limited to the rod shape shown in FIG. 4, but may be a spherical protrusion 42 as shown in FIG. Further, a guide auxiliary member 42 is attached to the lower guide plate 30 for guiding the document 16 to the ejection roller 27 and the driven roller 28.
and the driven roller 28 from the front side in the conveying direction of the document 16 to the vicinity of the contact position between the ejection roller 27 and the driven roller 28, and are arranged so as to cover the upper part of the arm provided on the driven roller 28. Therefore, the original 16 is
2, the discharge roller 2 can be removed without being caught by the arm 40.
7 and the driven roller 28 to a contact position.

The guide auxiliary member 42 may be fixed to the lower guide plate 30 with adhesive 43 as shown in FIG. 7, or fixed to the lower guide plate 30 with screws 44 as shown in FIG. Alternatively, it may be fixed by welding. Furthermore, as shown in FIG. 9, the guide auxiliary member 42 moves the lower guide plate 45 from the front side of the ejection roller 27 and the driven roller 28 in the document conveyance direction to the vicinity of the contact position of the ejection roller 27 and the driven roller 28, so that the lower guide plate 45 is attached to the driven roller 28. It may be integrally configured with a lower guide plate 45 so as to cover the upper side of the provided arm.

Next, the operation will be explained. Single sheet type manuscript 1
6, the original 16 is placed on the original table 7.
, and press the start button (located on the operation section not shown) to start reading. When the start button is pressed, the document reading device 1 drives the document conveyance device 6, separates the document 16 one by one, and transports the document 16 to the reading position 8 using the conveyance rollers 23, 24, 25, and 26.
Transport to. The light source 10 projects light onto the original 16 conveyed to the original reading position 8, and the original reading unit 3 reads the original 16.
is scanned to read the image of the document 16. The original 16 whose image has been read is conveyed in the direction of the ejection roller 27, and is transferred to the original reading device 1 by the ejection roller 27 and the driven roller 28.
The document is discharged and placed on the document holding plate 5, which is an external paper tray.

At this time, when the original 16 is conveyed to the ejection roller 27, it is guided by the lower guide plate 30 and the upper guide plate 29, but the ejection roller 27 and the driven roller 2
A guide auxiliary member 42 is arranged in front of 8.
From this side of the discharge roller 27 and the driven roller 28, the guide auxiliary member 42 guides the discharge roller 27 and the driven roller 28.
7 and the driven roller 28 to a contact position. This guide auxiliary member 42 is disposed so as to cover the upper part of the arm 40 attached to the driven roller 28.
The document 16 is transferred to the arm 4 attached to the driven roller 28.
Discharge roller 27 and driven roller 28 without being caught by zero
conveyed to the contact position. Further, since the arm 40 is made of a highly elastic material, it is possible to prevent the original 16 from getting caught on the arm 40 as much as possible, and further,
Since a protrusion 41 is formed at the tip of the arm 40 that protrudes in the rotational direction of the driven roller 28, the document 16 is
0 can be further prevented. Therefore, the document 16 can be transported without affecting the conveyance speed.
It can be transported smoothly. As a result, the image of the document 16 at the reading position 8 can be read appropriately, and the quality of the read image can be improved. In particular, since the protrusion 41 shown in FIG. 5 is formed in a spherical shape, it is possible to further prevent the document 16 from being caught on the arm 40.

The document 16 is discharged onto the document holding plate 5 by a discharge roller 27 and a driven roller 28, and an arm 40 formed of a highly elastic member is attached to the driven roller 28. Therefore, manuscript 16 is
The discharge roller 27 and the driven roller 28 are controlled by the arm 40.
The paper is kicked away from the paper, and is discharged and placed at a position far away from the discharge roller 27 and the driven roller 28. Therefore, the document 16 is transferred to the ejection roller 27 and the driven roller 2.
It is possible to prevent multiple originals 16 from being ejected or placed near the paper tray 8, and to properly store multiple originals 16 without increasing the height difference between the ejection roller 27 and driven roller 28 and the original holding plate 5, which is a paper tray. It can be placed on. As a result, it is possible to reduce the size of the document conveying device 6 and, by extension, the document reading device 1, while improving the ease with which the document 16 can be placed.

Note that in the above embodiment, the arm 40
Although the case where the driven roller 28 is provided on the side of the document holding plate 5 which is a paper tray has been described, the invention is not limited to this, and when the ejection roller 27 is arranged on the paper tray side, 40 and protrusions 41 can be formed on the discharge roller 27 to cope with this problem.

[0020]

According to the invention as set forth in claim 1, one of the ejection roller and the driven roller that ejects the paper guided by the guide plate onto the paper tray outside the device is provided with the ejection roller or the driven roller. The arm that protrudes outward from the outer peripheral surface of the arm is made of an elastic material, and a protrusion that protrudes in the direction of rotation of the discharge roller or driven roller is formed at the tip of the arm, so that the elasticity of the arm is reduced. With the protrusion formed on the arm, the paper can be kicked away from the ejection roller and the driven roller and ejected onto a paper tray outside the device, and can be properly placed on the paper tray. As a result, the paper can be properly placed on the paper tray without increasing the height difference between the ejection roller or driven roller and the paper tray, improving the ease of placing the paper on the paper tray. It is possible to downsize the paper ejecting device and, by extension, the document reading device and recording device to which the paper ejecting device is applied. In addition, since a protrusion is formed at the tip of the arm that protrudes in the rotational direction of the ejection roller and driven roller, it is possible to prevent the conveyed paper from getting caught in the arm, and the paper can be conveyed smoothly. Can be done. Therefore, it is possible to improve the image quality of an image read or recorded on a document by a document reading device or a recording device.

According to the second aspect of the invention, the outer periphery of the ejection roller or the driven roller is attached to one of the ejection roller or the driven roller that ejects the paper guided by the guide plate onto the paper tray outside the device. An arm that protrudes outward from the surface is formed of an elastic material, and a protrusion that protrudes in the rotational direction of the discharge roller or driven roller is formed at the tip of the arm, and a guide plate is provided with a projection that protrudes in the direction of rotation of the discharge roller or the driven roller. A guide auxiliary member is provided that covers the rotating arm and prevents the paper from coming into contact with the rotating arm up to the contact position of the driven roller. The paper can be guided to a contact position with the rollers, and it can be prevented from affecting the conveyance of the paper. In addition, since a protrusion is formed at the tip of the arm that protrudes in the rotational direction of the ejection roller and driven roller, it is possible to prevent the conveyed paper from getting caught in the arm, and the paper can be conveyed smoothly. Can be done. As a result, when this paper ejecting device is applied to a document reading device or a recording device, the paper can be ejected smoothly without affecting the conveyance of the paper.
The image quality of images read by a document reading device and images recorded by a recording device can be improved. Furthermore, the elasticity of the arm and the protrusions formed on the arm allow the paper to be kicked away from the ejection roller and the driven roller and ejected onto the paper tray outside the device, allowing the paper to be properly placed on the paper tray. can be placed. As a result, the paper can be properly placed on the paper tray without increasing the height difference between the ejection roller or driven roller and the paper tray, improving the ease of placing the paper on the paper tray. It is possible to downsize the paper ejecting device and, by extension, the document reading device and recording device to which the paper ejecting device is applied.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an embodiment of a document reading device to which a paper ejecting device according to each invention of the present application is applied.

FIG. 2 is a configuration diagram of a document conveying device portion of a document reading device to which a paper ejecting device according to each invention of the present application is applied.

FIG. 3 is an enlarged view of part A in FIG. 2.

FIG. 4 is an enlarged view of a discharge roller and a driven roller portion of a document reading device to which a paper discharge device according to each invention of the present application is applied.

FIG. 5 is a diagram showing another example of an arm and a protrusion provided on the driven roller.

FIG. 6 is an enlarged view of a guide plate and a guide auxiliary member portion of a document reading device to which a paper ejecting device according to each invention of the present application is applied.

FIG. 7 is a diagram showing an embodiment in which a guide auxiliary member is fixed to a guide plate with an adhesive.

FIG. 8 is a diagram showing an embodiment in which the guide auxiliary member is fixed to the guide plate with screws.

FIG. 9 is a diagram showing an example in which the guide auxiliary member is integrally molded with a guide plate.

FIG. 10 is a schematic configuration diagram of an example of a conventional paper ejection device.

[Explanation of symbols]

1 Original reading device 2 Main body 3 Original reading unit 4 Book-type original table 5 Original holding plate 6 Original transport device 7 Original table 8 Reading position 10 Light sources 11, 12, 13 Mirror 14 Lens 15 Photoelectric conversion element 16 Original 21 Original feeding roller 22 Driven rollers 23, 24, 25, 26 Conveyance roller 27
Discharge roller 28 Followed roller 29 Upper guide plate 30 Lower guide plate 31 Motor 40 Arm 41 Projection 42 Guide auxiliary member 45 Lower guide plate

Claims (2)

[Claims] Claims: 1. A discharge roller that is rotationally driven and discharges the paper out of the apparatus; a driven roller that contacts and follows the discharge roller and discharges the paper together with the discharge roller; and a paper that is conveyed to the discharge roller and the driven roller. a guide member that guides the paper that is being output, and a paper tray on which the paper that has been ejected out of the device by the ejection roller and the driven roller is placed, and the ejection roller that rotates the paper guided on the guide member In a paper ejecting device that ejects the paper out of the device using a driven roller and places it on a paper tray, one of the ejecting roller or the driven roller is provided with an elastic arm that protrudes outward from the outer peripheral surface of the ejecting roller or the driven roller. 1. A paper ejecting device, characterized in that it is formed of a member, and a protrusion is formed at the tip of the arm to protrude in the rotational direction of the ejecting roller or the driven roller. 2. A discharge roller that is rotationally driven and discharges the paper out of the apparatus; a driven roller that contacts and follows the discharge roller and discharges the paper together with the discharge roller; and a paper that is conveyed to the discharge roller and the driven roller. a paper tray on which the paper ejected out of the device is placed by the ejection roller and the driven roller, and an ejection roller that rotates the paper guided on the guide member; In a paper ejection device that ejects the paper out of the device using a driven roller and places it on a paper tray, an elastic member is attached to one of the ejection roller or the driven roller and an arm that protrudes outward from the outer peripheral surface of the ejection roller or the driven roller. and a protrusion protruding in the rotational direction of the ejection roller or driven roller is formed at the tip of the arm, and the rotating arm is formed on the guide member to a point near the contact position of the ejection roller and the driven roller. A paper ejecting device characterized by being provided with a guide auxiliary member that covers the upper part and prevents the arm from coming into contact with the paper.