JPH0597313A - Paper discharging device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a paper discharge device capable of accurately stacking various kinds of paper sheets at a predetermined position regardless of size and hardness. [Structure] A mountain-shaped guide plate 15 provided parallel to the paper discharge direction of sheets such as originals and copy paper and standing upright with respect to the paper discharge tray 14 can be moved in the paper discharge direction. By adjusting the position in the front-back direction according to the length of the paper sheets and the strength of the waist, various paper sheets are loaded at appropriate positions.

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 for paper sheets such as originals and copy sheets.

[0002]

2. Description of the Related Art When a paper discharge tray of a copying machine or an automatic document feeder (ADF) is provided so as to be inclined with respect to the main body (the main body of the copying machine or the ADF main body) so that the front end in the paper discharge direction is upward. It is possible to prevent the paper sheets discharged onto the paper discharge tray from protruding from the leading edge or falling off.

However, in this case, a certain amount of space in the height direction is required for inclining the paper discharge tray, which has the drawback of increasing the size of the apparatus.

Further, when the discharge tray is provided horizontally with respect to the main body, paper sheets may stick out from the tip of the discharge tray,
In order to prevent the paper from falling off, the length of the paper discharge tray must be sufficiently long, which requires a space in the lateral direction.

From such a background, it has been proposed to form a plurality of mountain-shaped guide plates on the paper discharge tray in parallel with the paper discharge direction.

FIG. 6 is a configuration diagram of an ADF and a scanner having a discharge tray with a mountain-shaped guide plate.

Inside the scanner body 1, a CCD 3, a lens 4, a mirror 5 and a fluorescent lamp 6 for illuminating an original are arranged. The image reading method is the same as that of a general copying machine, and will not be described.

The operation of the ADF 2 will be described. The original 8 stacked on the original table 7 is conveyed from the paper feeding section 9 along each roller 10 and the guide section 11, and the original 8 is read by the reading section 12 in the figure. Image information of
After that, the paper is discharged by the paper discharge roller 13 and stacked on the paper discharge tray 14.

The original document 8 conveyed by the discharge roller 13
Are stacked on the paper discharge tray 14 along the mountain-shaped guide plate 15 having a certain angle, and when the document 8 is a small size (short size), as shown in FIG. Since the document 8 stops on the slope 15a and does not move further in the X direction, it does not protrude from the paper discharge tray 14. Further, when the document 8 has a large size (longitudinal size), as shown in FIG. 8, the document having the conveying force F advances in the Z direction along the slope 15a of the mountain-shaped guide plate 15, but the mountain-shaped guide is used. Board 15
The portion beyond the apex 15b is bent from the Z direction to the Y direction due to the document weight that overcomes the strength of the original, and the bending also attenuates the conveying force F, and finally the original is The mountain-shaped guide plates 15 are stacked along the shape of the mountain-shaped guide plates 15 in the state shown by the broken line.

[0010]

However, in the above-mentioned conventional apparatus, since the mountain-shaped guide plate is fixedly provided to the paper discharge tray, the size (length) of various kinds of paper sheets.
However, there was a drawback that it was not possible to cope with the hardness (strength of the waist).

The present invention is premised on a paper discharge tray provided with a mountain-shaped guide plate, and provides a paper discharge device capable of accurately stacking various kinds of paper sheets at a predetermined position regardless of size and hardness. The purpose is to

[0012]

The above object is to stack paper sheets discharged from the pretreatment section and to provide a predetermined number of upright mountain-shaped guide plates in parallel with the sheet discharge direction. This is achieved by providing the mountain-shaped guide plate movably in the paper discharge direction in a paper discharge device having a paper discharge tray.

[0013]

[Operation] A predetermined number of mountain-shaped guide plates provided upright with respect to the paper discharge tray in parallel with the paper discharge direction of paper sheets such as originals and copy papers can be moved in the paper discharge direction. By adjusting the position in the front-rear direction according to the length of the paper sheet and the strength of the waist, the paper sheet is always stacked at an appropriate position regardless of the type.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an assembled state of the paper discharge device according to the first embodiment, and FIG. 2 is an exploded perspective view of the same.

In this embodiment, a fitting groove 14a having a length L1 larger than the length L2 of the mountain-shaped guide plate 15 is formed in the discharge tray 14 at a position facing the mountain-shaped guide plate 15. On the other hand, the mountain-shaped guide plate 15 is formed on a thin plate-shaped support stand 16 separate from the paper discharge tray 14. The mountain-shaped guide plate 15 is fitted into the fitting groove 14a, and the paper ejection tray 1
4 and the upper surface of the supporting base 16 are overlapped with each other, and the lower surface of the supporting base 16 having a width W1 and a thickness T1 is W2 having a receiving width slightly larger than W1 and a thickness T2 slightly larger than T1. Stack on 17.

With the support 16 sandwiched between the paper ejection tray 14 and the substrate 17, the four corners of the paper ejection tray 14 and the substrate 17 are fixed by the screws 18 to complete the paper ejection device.

As described above, the length of the fitting groove 14a is longer than that of the mountain-shaped guide plate 15, and the support base 16 is loosely fitted between the paper discharge tray 14 and the substrate 17 due to the dimensional relationship. Since it is in the opened state, the support base 16 is movable in the direction of arrow A in FIG. Therefore, the mountain-shaped guide plate 15 is also movable in the direction of arrow A, that is, in the direction parallel to the sheet discharge direction.

When the mountain-shaped guide plate 15 is moved in the front-back direction (direction A) of the paper discharge tray 14 according to the type of paper sheet, a finger is hooked on the protrusion 16a standing at one end of the support base 16. You can operate it.

FIG. 3 is a perspective view of an assembled state of the paper discharge device according to the second embodiment, FIG. 4 is a perspective view of the same with a support base slightly pulled out, and FIG. 5 is an exploded perspective view of the same.

In this embodiment, the paper discharge tray 14 is formed in the shape of a hollow box, and has a width W3 and a thickness T3 at the center thereof, a width W4 narrower than the width W3, and a thickness T4 thinner than the thickness T3. 16 is loosely fitted, and the mountain-shaped guide plate 15 is fitted in the fitting groove 1.
It is made to project to the upper surface of the paper discharge tray 14 via 4a.

When the mountain-shaped guide plate 15 is moved, it is operated by hooking a finger on the projection 16b formed below one end of the support base 16.

FIG. 4 shows a state in which the support base 16 is popped out, but by making this pop-out portion function as an auxiliary tray, it is possible to deal with long-sized paper sheets.

As the paper sheets, in addition to the above-mentioned copy paper and manuscript, thermal paper used in facsimiles,
Various objects such as forms, carbonless paper, silver salt recording paper, and paper cards are targeted.

[0025]

According to the inventions of claims 1 to 3,
It is possible to always stack paper sheets such as copy paper and originals at a predetermined position accurately by the mountain-shaped guide plate whose position can be changed according to the type of paper sheets.

According to the fourth aspect of the invention, the position of the mountain-shaped guide plate can be changed with a simple structure in which the support base is slid with respect to the paper discharge tray.

According to the fifth aspect of the present invention, by utilizing the protruding portion of the support base as an auxiliary tray, it is possible to deal with long-sized paper sheets.

According to the invention of claim 6, the position of the mountain-shaped guide plate can be easily changed by hooking a finger on the projection.

[Brief description of drawings]

FIG. 1 is a perspective view of a paper discharge device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the paper discharge device according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a paper discharge device according to a second embodiment of the present invention.

FIG. 4 is a perspective view of a part of a support base of a paper discharge device according to a second embodiment of the present invention in a partially projected state.

FIG. 5 is an exploded perspective view of a paper discharge device according to a second embodiment of the present invention.

FIG. 6 is a configuration diagram of an ADF equipped with a paper discharge tray and a scanner according to a conventional example.

FIG. 7 is a configuration diagram of an ADF equipped with a paper discharge tray and a scanner according to a conventional example.

FIG. 8 is a schematic diagram showing an operation of a mountain-shaped guide plate.

[Explanation of symbols]

 14 Paper ejection tray 14a Fitting groove 15 Mountain-shaped guide plate 16 Supports 16a, 16b Projection

Claims (6)

[Claims] 1. A paper discharge tray that stacks paper sheets discharged from a pre-processing unit and has a paper discharge tray provided with a predetermined number of upright mountain-shaped guide plates parallel to the paper sheet discharge direction. In the apparatus, the mountain-shaped guide plate is provided movably in the paper discharge direction. 2. The paper discharge device according to claim 1, wherein the paper discharge tray is for stacking copy paper after image formation. 3. The paper discharge device according to claim 1, wherein the paper discharge tray is a paper discharge tray for stacking documents, which is provided in an automatic document feeder. 4. The support base for upstanding and forming the mountain-shaped guide plate according to claim 1, wherein the paper ejection tray has a fitting groove having a lengthwise dimension larger than that of the mountain-shaped guide plate. A sheet discharging device, in which the mountain-shaped guide plate is slidably fitted in the fitting groove, and the sheet discharging tray and the support base are overlapped with each other. 5. The discharge tray according to claim 4, wherein an auxiliary tray is configured by a protruding portion of the support table generated by sliding the support table relative to the discharge tray. apparatus. 6. The paper ejection device according to claim 4, wherein a protrusion is formed on the support when the support is slid with respect to the paper ejection tray.