JPS60128135A - Paper feed device in copying machine and the like - Google Patents

Abstract

PURPOSE:To make it possible to make smooth the feed of papers having any sizes, by providing a stopper for aligning the center line of a press-force setting arm and the center line of a paper, on the outer bottom surface of a tray. CONSTITUTION:A stopper 4 for aligning the center line of a press-force setting arm 2 with the center line of a paper is attached to the outer bottom surface of a cassette tray 1. A block 3 attached with a press-force setting arm 2 moves along a guide shaft 5, and is urged always outward of a copying machine body by a pressing force of a spring 6. Papers are stored vertically into the cassette tray 1 which is then set on the copying machine body by being pressed in the direction B. Then, the stopper 4 presses a part of the block 3 overcoming the repulsion force of the spring 6, and therefore, the press-force setting arm 2 also moves in the direction B within a space 7 in the bottom part of the cassette tray 1. With this arrangement it is possible to effect a smooth feed of papers having various sizes.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to improvements in paper feeding devices such as copying machines! More specifically, it relates to a paper feeding device in which a constant pressure force is applied to the paper in the paper cassette tray even if the size of copy paper supplied to a copying machine changes. There is f.

PRIOR ART A paper feed device in a conventional copying machine, etc. includes a feed roll for taking out the top sheet of a stack of paper stored in a paper cassette 9, and a constant push for constantly pushing the stack of paper in the paper cassette tray. It consists of a pressing force setting arm for pressing the feed roll from below with pressure. The following shows the relationship between the paper dimensions and the position of the pressing force setting arm when a stack of paper is placed in the tray by aligning it with the corners of the tray and the pressing force setting arm pushes up the stack from below from the bottom of the tray. As shown in Figure 2, there are f. In Figure 2 (1)
has paper cassette tray f, A'6 is A6 size (29
7x420m) is stored so that the long side of the paper is parallel to the vertical direction (the direction of arrow A in which the paper is taken out from the tray), and the paper is fed vertically, and B4 is 8
Paper of 4 dimensions (257 x 3640) is also housed in the vertical direction (hereinafter abbreviated as center line)! 1 and the center line 12 of B4 paper, and
When feeding 3 sheets and 12 sheets of B4 paper, approximately the same pressing force is applied by the arm (2) to the bottom surface of each bundle of sheets. ↑ Paper feeding is not always good, and A4 paper (240×
In the case of B5 paper (182 x 25 paper), it is necessary to store the paper in a paper cassette tray and feed it horizontally so that the short side of the paper is parallel to the vertical direction. The drawback was that it was not easy to handle the manuscript when creating it.

OBJECTS OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned drawbacks of conventional paper feeding devices, to always store paper of any size in a paper cassette tray in the vertical direction, and to maintain the center line of the paper and the suppression setting arm. An object of the present invention is to provide a paper feeding device in which the center line of the paper coincides with the center line of the paper.

Mechanism of the Invention The object of the present invention is achieved by attaching a stone to the outer bottom surface of the paper cassette tray for aligning the center line of the pressing force setting arm with the center line of the paper.

The present invention will be described in detail below with reference to the drawings. FIG. 1 shows an embodiment of the present invention, and is a view of a paper cassette tray (1) viewed from below. The pressing force setting arm (2) is attached to the Zoroku (31) and the block (
3) can be moved by 1° C. along the guide shaft (5). One end of the guide shaft is fixed to the copying machine body, and
The screws (1) and (3) inserted into the screws (6) are always pushed toward the outside of the copying machine body. A stone/e f41 is provided on the outer bottom surface of the cassette tray (1). Place the paper vertically in the cassette tray (1)
, push the cassette tray in the direction of arrow B, and install it in the designated location of the copying machine main body.
4) presses a part of Zorotsuk (3) against the repulsive force of spring (6)! , the pressing force setting arm (2) attached to the block (3) also moves in the direction of arrow B in the space (7) at the bottom of the cassette tray (1). Once the installation of the cassette tray to the copying machine is complete, the stopper (4) will no longer press the block (31), so
The pressing force setting arm (2) is fixed to the stopper (4).
) also stops at a predetermined position, ie, a position 1 where the center line of the arm matches the center line of the paper in the cassette tray.

The relationship between the stop position of the pressing force setting arm (21) and the stopper (4) will be explained with reference to FIG.
1) indicates the paper cassette tray, A3゜B4 in the figure
e A 4 v B 5? 11pH2t et al. and 14 have the same meaning as in FIG. (2) is the pressing force setting arm! Yes, paper AM, B4. A4.
Is the stopping position for B Roku 5 a wave? #〒Indicated, the center of the arm at each stop position? 1M (equivalent to ! in Figure 2)
coincides with the center lines 11v12pls and 14 of each sheet of paper stored in the paper cassette tray in the vertical direction. In other words, when using A3 paper, is the center line of the pressing force setting arm (2) aligned with the center of the A6 paper? al
A stopper (4) is attached to the outside bottom of the paper cassette tray (1) so as to match the paper cassette tray (1). Press along (5) to stop the arm at the position ↑ where the center line of the arm matches the center line of the A6 paper.

In the case of B4 paper, the stopper (4) moves the block (3) to the guide shaft (5 ).

Below, in the case of A4 paper and B5 paper, the stopper (
4), the arm is pressed to a position where the center Ml of the sheet and 14 coincide with the center line of the pressing arm. The stock tray (4) is designed so that it can be positioned each time according to the size of the paper to be used, and the paper of the desired size is stored in the paper cassette tray in the vertical direction, and the paper cassette tray is loaded into the paper cassette tray.

If installed on the main body of a military aircraft, the center line of the pressing force setting arm and the center line of the paper will automatically match.

Effects of the Invention According to the present invention, paper of a desired size is fed vertically to match the corners of the paper cassette tray! If you insert the paper into a cassette tray so that the paper can be adjusted, and then insert and install this cassette tray into a designated location of a copying machine, the center line of the paper and the center line of the pressing force setting arm will automatically match. The paper is always fed with a constant pressure against the feed curl for smooth paper feeding, and the paper is always fed vertically and can be stored in the cassette tray, so you can change the arrangement of the original when making reduced or enlarged copies. The advantage is that you don't have to.

[Brief explanation of drawings]

Fig. 1 is a diagram for explaining the present invention in detail, Fig. 2 is a diagram showing the relationship between the center line of the paper stored in the paper cassette tray of the printer and the center line of the pressing force setting arm, and Fig. 6 is a diagram for explaining the present invention in detail. FIG. 1 shows the relationship between the paper center line and the center of the pressing force setting arm when using the apparatus of the present invention. Symbols in the figure: 1...Paper cassette tray 2...Pushing force setting arm 6...Block 4...Stock horn 5...Guide shaft 6...Panel 7...Space part ( 3 others)

Claims (1)

[Claims] In a paper feeding device such as a copying machine that has a paper cassette tray, a pressing force setting arm, and a feed roll, a center line of the pressing force setting arm and a center line of the paper stored in the tray are marked on the outer bottom surface of the paper cassette tray. A paper feeding device for a copying machine, etc., characterized in that it is provided with a stone and a radius for matching.