JPS63247225A - Large capacity paper feeding device - Google Patents

Abstract

PURPOSE:To increase the kind of the paper which can be loaded onto a tray and prevent the deflection of paper by allowing a paper width regulating plate to be shifted according to the designation of the size of a copying paper, in the captioned device for a copying machine. CONSTITUTION:A button for designating the size of a copying paper P is installed in an operation part 1a. When the size, e.g., A4 size is designated by the size designating button, a motor 17 is driven by the electric signal, and paper width regulating plates 16 and 17 shift to the designated paper width position through the operations of a pinion 15 and a rack member 14. With such constitution, the kind of the paper sheets which can be loaded onto a tray can be increased, and the deflection of paper having different paper width can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) This invention relates to a large-capacity paper feeding device for a copying machine.

(Prior art) As a large-capacity paper feeding device that feeds copy paper to a copying machine,
A known structure includes an elevator tray on which a large number of copy sheets are stacked, a drive mechanism for moving the elevator tray up and down, and a paper width regulating means for regulating the width of the copy paper.

(Problems to be Solved by the Invention) However, since the paper width regulating means in the conventional large-capacity paper feeding device is fixed to the main body of the device, only one type of copy paper can be stacked on the elevator tray. However, if you set copy paper with a different paper width (copy paper smaller in size than the standard copy paper for which the paper width can be regulated), there is a problem of paper scratching.

This invention was made based on the above circumstances,
The purpose is to provide a large-capacity paper feeding device that can increase the types of copy paper that can be stacked on an elevator tray and prevent paper misalignment of copy paper of different paper widths.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an elevator tray for loading copy paper, a drive mechanism for vertically moving the elevator tray, and a paper width for regulating the width of the copy paper. A large-capacity paper feeding device equipped with a regulating means is provided with a means for specifying the size of copy paper and a drive 114#I for moving the paper width regulating means according to the size of the copy paper specified by the specifying means. It is characterized by:

(Function) When you specify the size of copy paper to be set on the elevator tray, the paper width regulating means can be moved to the specified paper width position, so you can increase the types of copy paper that can be loaded on the elevator tray and also reduce the paper width. Paper misalignment of different copy papers can be prevented.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 indicates the main body of a large-capacity paper feeder installed adjacent to a copying machine (not shown). A paper feed connection port 2 to the copying machine side, a large-capacity paper storage chamber 4 whose rear surface is opened by opening the paper feed door 3, and an elevator tray 5 in which a large number of copy sheets are loaded in the storage chamber 4. , a paper feed roller (not shown) that conveys the copy paper P on the elevator tray 5 one by one in the direction of the paper feed connection port 2 , a drive mechanism that moves the elevator tray 5 up and down, and a copy paper P Paper width regulating plates 6 and 7 are provided as means for regulating the width of the paper.

The drive mechanism (not shown) sequentially moves the elevator tray 5 upward as the amount of paper decreases as the paper is sent to the copying machine side, and reaches the lower limit position where paper is replenished when the paper P becomes empty. The tray 5 is lowered, and its structure is well known and is not shown in the drawings. The front side and rear side kite rollers are pivotally supported, and one end is fixed to the take-up roller, and the other end is fixed to the tray 5 by bypassing the guide roller (this belt fixing part is attached to the side panels of the main body). (can be moved up and down along the vertical slot)
It is comprised of front and rear elevator belts fixed to the winding roller, and a reversibly rotatable drive motor that rotationally drives the winding roller via a reduction gear mechanism.

Therefore, the present invention provides the above elevator tray 5.
Drive mechanism for the same tray (not shown).

In a large-capacity paper feeder equipped with paper width regulating plates 6 and 7 as paper width regulating means, the power switch s of the apparatus main body 1, the electric lamp S1. Elevator button B.

A means for specifying the size of copy paper P, for example A4. Push buttons 20, 21, and 22 for specifying B5° and A5 sizes are provided, and when the paper size is specified by the specifying means for a poem with no paper stored, the driver I/f 410 is activated to regulate the paper width as a paper width regulating means. The plate 6.7 is moved to a designated paper width position.

To further explain this structure, the paper width regulating plates 6 and 7 located on the front side and the rear side in the main body 1 are connected to the drive unit 8 (
As shown in FIG. 3, the horizontally movable plate portions 6a, each having an L-shaped planar shape, are opposed to each other and are moved in the paper width direction within the case cover (shown as a removable case cover attached to the top cover 9 of the apparatus main body 1).

7a, and from one end of the horizontally movable plate portions 6a and 7a, a second As shown in the figure, vertical paper width regulating plate parts 6b, 611' and 7b extend downward from both side notches 5a, 5b of the elevator tray 5 and are spaced apart in the paper feeding direction.
, 7b'. Also,
The drive mechanism 10 for the paper width regulating plates 6, 7 is configured as a rack and pinion mechanism that relatively moves the front side and rear paper width regulating plates 6.7 in the paper width direction. 8, the specific structure of which is as follows: 2 which are attached to the horizontally movable plate part 6a of the front side paper width regulating plate 6 and the horizontally movable plate part 7a of the rear side paper width regulating plate 7 and spaced apart from each other in the direction perpendicular to the paper width. Book rack member 13.14
, a pinion 15 that is pivotally supported on the upper wall 9a of the main body that meshes with the opposing rack teeth of the latch members 13 and 14, and a drive that can rotate in forward and reverse directions to rotationally drive the pinion 15 via a transmission belt 16. It is composed of a motor 17. The drive motor 17 is fixed to a motor mount 18 attached to the top plate (upper wall 9a of the main body) of the main body top cover 9 so as to straddle the rack member 13. 22), it operates to move the paper width regulating plates 6, 7 to designated paper width positions. In this case, the operation linkage is, for example, the motor 1
When the pinion 15 is rotationally driven in the clockwise direction in FIG.
3.14 moves relatively in the direction shown by the solid line arrow in Figure 3, and as a result, the front side paper width regulation plate 6 and the rear side paper width regulation plate 7 are opened and moved to the designated paper width position, and vice versa. When the motor 17 is operated, the bin-on 15 is moved to the third position.
When rotated counterclockwise in the figure, this pinion 1
5, the rack members 13 and 14 that engage with the rack members 13 and 14 move relative to each other in the direction shown by the dotted line arrow in FIG. It will now be moved closed.

Note that in the above embodiment, the paper width of the copy paper P is regulated at the center by relative movement of the paper width regulation plate 6 on the front side and the paper width regulation plate 7 on the rear side. By providing a regulating plate only on either the front side or the rear side and moving the paper width regulating plate on one side with reference to the inner side of the main body (paper guide section) on the opposite side, the copy paper P can be moved to the main body 1 of the apparatus. As a modification, it may be possible to restrict the width by displacing it to one side of the inside. Further, as for the drive mechanism 10 of the paper width regulating plate 6.degree. 7, a hooking mechanism such as an endless chain or an operating mechanism such as a solenoid may be used instead of the rack and pinion mechanism. Furthermore, the present invention is not limited to a large-capacity paper feeder connected to a copier as described in the embodiments, but can also be applied to a large-capacity paper feeder built into a copier main body. This can be implemented by providing copy paper size designation means in the operation section (control panel section) of the main body of the copying machine.

〔Effect of the invention〕

The large-capacity paper feeding device of the present invention is provided with a copy paper size specifying means as described above and a drive mechanism for moving the paper width regulating means in accordance with the paper size specified by the specifying means. This has the effect of increasing the types of copy sheets that can be stacked on the tray and preventing misalignment of copy sheets of different paper widths.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a large-capacity paper feeder according to an embodiment of the present invention with the paper feed door open, FIG. 2 is a vertical cross-sectional view of the main parts of the paper feeder, and FIG. FIG. 2 is a cross-sectional plan view taken along the line ■-■ in FIG. 2; 1... Apparatus body, 3... Paper feed door, 4... Large capacity paper storage chamber, P... Copy paper, 5... Elevator tray 6... Front side as paper width regulating means Paper width regulating plate, 7... Paper width regulating plate on the rear side, 10... Drive mechanism for the paper width regulating plate, 13.14... Rack member, 1
5... Binion 16... Transmission belt, 17... Drive motor, 20.21.22... Push button as means for specifying paper size.

Claims (2)

[Claims] (1) Specifying the size of copy paper in a large-capacity paper feeder equipped with an elevator tray for stacking copy paper, a drive mechanism for moving the elevator tray up and down, and a paper width regulating means for regulating the width of copy paper. What is claimed is: 1. A large-capacity paper feeding device comprising: means and a drive mechanism for moving paper width regulating means in accordance with the size of copy paper specified by the specifying means. (2) The large-capacity paper feeding device according to claim 1, wherein the drive mechanism of the paper width regulating means is comprised of a rack and pinion mechanism and a drive motor.