JPS61119539A - Copying paper sheet selecting type paper feeding apparatus - Google Patents

Abstract

PURPOSE:To feed a copying paper sheet in accordance with the size of an original copying paper sheet by autmatically feeding-out a prescribed copying paper sheet only by selecting an instruction switch for the size of plural kinds of copying paper sheets having a different size set onto a copying machine. CONSTITUTION:A photosensitive paper sheet having a different size is accommodated into each container 1, 2, and paper feeding rollers 5 and 6 are rotatably installed onto paper feeding levers 7 and 8. Said levers 7 and 8 are supported onto cams 10 and 11, respectively. When an electromagnet 22 does not conduct, the boss part of the chain ring 17 of a sleeve 20 for clutch and a spring for clutch idly revolve, and the power of the chained ring 17 is not transmitted to the cam 10, while when the electromagent 22 conducts, a turning moment is transmitted by the friction. When the selecting switch for the electric circuit for the connection of the electromagnets 22 and 24 for controlling the cams 10 and 11 is pushed, a clutch operates to revolve the cam 10 or 11, and the roller 5 or 6 is lowered to feed paper sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a paper feeding device for selectively feeding sheet-like copy paper in a copying machine.

BACKGROUND ART Conventionally, when the sizes of originals to be copied are different, a sheet of copy paper is selected according to the size of the original and set in a copying machine. Unfortunately, if the size of the original to be copied differs from the size of the copy paper set in the copying machine, the copy paper must be replaced each time, which is very inconvenient.

<Purpose> The present invention has been made to address the above-mentioned drawbacks of the conventional technology, and allows the user to simply set multiple types of copy paper of different sizes in a copying machine and select the size of the copy paper using an instruction switch. The present invention provides a paper feeding device that automatically feeds out desired copy paper.

<Examples> Examples of the present invention will be described below with reference to the drawings. Figure 1 is a cross-sectional view showing an example of an electrophotographic copying machine.
are containers for storing photosensitive paper of different sizes, and are removably mounted on the white plates 3 and 4. container 1
For example, size A4 photosensitive paper is stored in the container 2, and size B4 photosensitive paper is stored in the container 2. Paper feed rollers 5 and A (/6 are attached to paper feed levers 7 and 8, and The paper feed levers 7 and 8 are rotatably attached by a ring 9. Although not shown in Figure 1, the paper feed roller 5 and the shaft 9 and the paper feed roller 6 and the shaft 9 are linked by a chain. Reference numeral 9 is linked to the drive motor of the copying machine.For this reason, the paper feed rollers 5 and 6 start rotating as soon as the main switch of the copying machine is turned on. cam 10
It is supported by a riser 11, and when the paper is not being fed out, the rollers 5 and 6 are in a lifted state.

The cams 10 and 11 are attached to a spring clutch mechanism as shown in Figure @2. 2nd Qll
In , the chain 17 is connected to the drive motor by a chain 18, and at the same time as the twin switch is turned on, ii
Start i*. One end of the clutch spring 19 is hooked into a hole in the cam 10 (or 11), and the end aS is hooked into a hole in the steel shaft 171Il of the clutch sleeve 20.

Furthermore, when no current is flowing through the electromagnet 22, the claw portion of the clutch operating lever 21 is inserted into the notch 23 of the clutch sleeve 20 as shown in FIG.
The boss part 7 and the clutch spring rotate idly and the power of the steel shaft 17 is not transmitted to the cam 10 by -1°. However, when current flows through the electromagnet 22, the clutch lever
21 is attracted toward the electromagnet 22, the pawl is detached from the notch 23 of the clutch sleeve 20, and the clutch spring 19 becomes entangled with the boss of the link 17 and the boss of the cam 10 and turns inward. , Nodding ring 1 due to friction
The rotational power of 7 is transmitted to the cam 10.

The electromagnet 22 that controls the cam 10 is connected to an electric circuit including a selection switch and a B4 photosensitive paper switch.
Further, the electromagnet 24 that controls the cam 11 is connected to an electric circuit including an A4 photosensitive paper switch.

I am now copying Sai χB4 on the manuscript table 25! ! When the B4 photosensitive paper switch, which is the X document rL selection switch, is pressed, a date signal is generated for a certain period of time, a current flows through the electromagnet for a certain period of time, the spring clutch of the cam 10 is engaged, and the cam 10 rotates.

Accordingly, the paper feed roller 5 is selected, and the paper feed loaf 5 moves down to the surface of the photosensitive paper and feeds out the B4 photosensitive paper.

The photosensitive paper sent out from the rk2 is id 13.
The photosensitive paper passes through a charging section 14 using corona discharge, an exposing section 15, and a developing section 16, where a copying operation is performed in sequence, and the copied photosensitive paper is discharged outside the machine as shown by the arrow.

When an A4 original is written and the A4 photosensitive paper switch is pressed, the paper is fed in the same manner and the copying operation is started, and the copying is performed through each process. That is, each paper feed roller is activated by each photosensitive paper switch to feed the photosensitive paper and start a copying operation. In the above embodiment, two types of photosensitive paper are used, but it is of course possible to use three or more sizes.

<Effects> As explained above, according to the paper feeding device of the present invention, multiple types of copy paper of different sizes are stored separately, and the desired size can be selected by simply pressing the copy paper switch. It is possible to automatically feed a copy sheet of the specified size and then feed the copy sheet through the copying process to start copying. At this time, when you select and operate the copy paper switch mentioned above, copy paper of the desired size starts to be fed and the copying operation starts immediately, eliminating the need to operate the copy start switch that starts copying after selecting the paper size. In addition to this, it also has the great effect of simplifying the copying operation.

In addition, it is possible to store copy paper of a plurality of different sizes in the machine in advance, and there is no need to replace the copy paper every time the size of the document changes, making the operation of the copying machine much easier.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of a copying machine according to the present invention, and FIGS. 2 and 3 are sectional views of a spring flanch mechanism. 1 and 2 are photosensitive paper storage containers, 3 and 4 are base plates, 5 and 6 are paper feed rollers, 7 and 8 are paper feed levers, 9 is a lever transfer, 1G and 11 are cams, 12 and 13 are photosensitive paper guides , 14 is a charging section, 15 is an exposure section, 16 is a developing section, 17 is a chain link, 18 is a chain, 19 is a clutch spring, 20 is a clutch sleeve, 2
1 is a clutch operating lever, 22 and 24 are electromagnets, 2
5 is a document table. Agent Patent attorney Yoshihiko Henshu (and 2 others) Figure 1

Claims (1)

[Claims] 1. A storage container that is removably attached to the copying machine body and stores different types of copy paper, and a paper feed roller that is provided facing each of the storage containers to which the copying machine body is attached;
A drive unit that rotationally drives each of the paper feed rollers, a selection switch that selects the paper feed of copy paper in each of the storage containers, and a paper feed roller that faces the copy paper selected by the selection switch. a paper feed roller selection mechanism to be operated, and the selection switch also serves as a start switch for feeding the paper selected by operating the switch and starting copying.