JPS6164638A - Paper feeder for copying machines - Google Patents

Abstract

PURPOSE:To facilitate supplying operations for transfer paper and its trouble correcting operations ever so easy, by installing a shifting device which shifts a paper housing part so as to be exposed to the outside in time of no transfer paper in this paper housing part or anything unusual in the transfer paper. CONSTITUTION:When transfer paper is used up in the paper housing part 4 selected, a shutter plate 22a of a lever body 22 in a detecting device 21 covers a paper end switch 23, turning it to OFF, whereby a paper end state comes to be detected in consequence. If so, a motor 29 is set in motion, and the paper housing part 4 is moved so as to be exposed outward a copying machine body with combined action of a rack 28 and a pinion 30. Here, with switch-off in the switch 24, the motor 29 stops and the paper housing part 4 also stops in a state of going to the outside of the copying machine body. In consequence, a supply of the transfer paper to the paper housing part 4 becomes facilitated.

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to a paper feeding device used for copy paper and the like.

[Prior art]

Conventionally, seeding has been proposed and implemented for paper feeding devices used in copying machines, etc., but when the paper storage section in the paper feeding device that stores transfer paper runs out of paper, it is a paper end. This was indicated by appropriate means. However, if the paper storage section is built into the copying machine, the user must check the paper end display and then manually pull out the paper storage section. The drawing was complicated.

〔the purpose〕

The purpose of the present invention is to solve the above-mentioned problems of the slave device,
To provide a paper feeding device for a copying machine or the like which allows easy replenishment of transfer paper into a paper storage section and also allows easy correction of troubles with the transfer paper.

〔composition〕

In order to achieve the above object, the present invention includes a plurality of paper storage sections, a detection means for detecting a paper end or an abnormal state of transfer paper, and a detecting means that detects whether there is no transfer paper in the paper storage section or The present invention is characterized by comprising a moving device that moves the paper storage section so as to expose it to the outside when an abnormality in the transfer paper is detected.

Hereinafter, a detailed explanation will be given based on one embodiment of the present invention.

FIG. 1 shows a schematic configuration of one type of copying machine embodying the present invention. An optical scanning system 2 is disposed below a contact glass 1 on which an original is placed, and an image of light reflected from the original is formed on a photosensitive drum 3 via the optical scanning system 2.

On the other hand, there are a plurality of paper feeding systems (six stages in this embodiment), and from one of the paper storage units 4 to the paper feeding roller 5a,
Separation roller 5b, feed belt 5C.

Transfer paper is fed via intermediate roller 5d. The fed paper passes between a registration roller 6 and a leading edge bending roller 7 and is guided to the photosensitive drum 3.

Around the photosensitive drum 3, there are a charger 8, an eraser 9, a developer 10, a pre-transfer static elimination lamp & P sensor 11,
Transfer charger 12, separation charger 13, separation claw 14
．． A fur brush 15, a static elimination lamp 16, etc. are arranged.

Then, when the toner image is transferred from the photosensitive drum 3 to the transfer paper by a known method, the transfer paper is separated from the photosensitive drum 3 by the separation charger 13 and heads toward the conveyor belt 17. Then, the transfer paper passes through a fixing roller 18 having a built-in heater, has the toner image fixed thereon, and heads to a copy tray 20 via a paper discharge roller 19.

Incidentally, each of the paper storage sections 4 is provided with a detection means 21 for detecting the paper end as shown in FIG. That is, in the vicinity of the paper feed roller 5a, an intermediate portion of a lever unit 22, which rests on the transfer paper P by its own weight, is rotatably supported.
A shirt cover plate 22a is provided that shields and exposes the paper end switch 23. Therefore, when there is no more transfer paper in the paper storage section 4, the lower part of the lever unit 22 is lowered as shown by the two-dot chain line, and the entire lever unit 22 is rotated counterclockwise, and the shirt flap plate 22 is moved to the paper end switch. 23 and turn off this switch 23.

Also, the side Vc of the cassette-shaped paper storage body 4, the first switch 24, the second switch 25. The i3 switches 26 are arranged in parallel, and a fourth switch 27 is arranged below. Furthermore, a rack 28 is formed on the side of each paper storage body 4,
It meshes with a pinion 30 fixed to the motor 29, and serves as a moving device for the paper storage body 4. The bottom surface of the rack 28 is adapted to slide on the top surface of the guide rail 31.

Therefore, when there is no transfer paper in a selected paper storage section 4, the detection means 21, that is, the shutter plate 22a of the integrated lever 22 blocks the paper end switch 23, turns off the switch, and detects the paper end state. It becomes. Then, the motor 29 is activated, and the rack 28 and the binion 30 work together to move the paper storage section 4 so as to expose it to the outside of the copying machine main body. Here, the first switch 24 is turned off when the paper storage section 4 is moved and the shielding by the paper storage section 4 is released.

The motor 29 is stopped, and the paper storage section 4 is stopped in a state where it is exposed to the outside of the copying machine main body (the state indicated by the dotted line in FIG. 1, position A in FIG. 1). Therefore, it is known that the paper storage section 4 has reached the paper end, and when replenishing transfer paper, the paper storage section 4 is located in a position where it can be easily pulled out, making the operation by the user extremely simple. .

Then, set the transfer paper in the paper storage section 4, insert the paper storage section 4 along the guide rail 31, and proceed. Then, the paper storage section 4 is moved to position 8-1 shown in Fig. 4. At this position, the motor 29 is stopped by the action of the second switch 250, and the paper storage section 4 is stopped at the so-called standby position. I will do it.

Furthermore, during the copying operation, the selected paper holder i3' (section 4) is moved 8 times to the C position shown in FIG. Then, the paper storage section 4 stops, and the paper feeding roller 5a or the like can feed the transfer paper.

Further, the fourth switch 27 is the vapor switch mentioned above.

After feeding the transfer paper to the paper storage section 4 in the idle state, set the paper storage section 4 on the guide rail 31 to turn on the switch and start the motor 29! The paper storage section 4 is automatically moved to the standby position where the second switch 25 is turned on.

FffJ notes 1st to 4th sweets f24.25.26.

27 The switch is turned on and off by shielding and releasing the paper storage section 4.

Incidentally, when an abnormal condition occurs such as a transfer paper jam, the abnormal condition is detected, and the paper storage section 4 is exposed to the outside of the copying machine main body in accordance with the detection signal in exactly the same process as described above. It is also possible to move it further. This makes it easier to remove paper jammed in the paper feed section.

Figures 8 to 12 show each paper storage section or any stage Q.
The operation of the paper storage section 4 (assuming N stage) and the relationship between the first to fourth switches 24, 25, 26, 27, etc. are shown in a flow diagram.

〔effect〕

As described above, the present invention can provide a paper feeding device for a copying machine or the like that allows easy replenishment of transfer paper into a paper storage section and correction of troubles with the transfer paper.

[Brief explanation of drawings]

FIG. 1 is a side view of a copying machine embodying the present invention, FIG. 2 is an explanatory diagram showing an embodiment of the detection means of the present invention, and FIG. 3 is a decoration of an embodiment of the paper storage section of the present invention. An enlarged perspective view showing the fourth part.
The figure is a plan view illustrating the relationship with each switch of the same example 111, a side view for the curse of the same example of embroidery as in Figure 5, and Figure 6 is the relationship between the moving device and the fourth switch of the same example. The plan view, FIG. 7, FIG. 8, FIG. 9, and FIG. 10 for explaining the operation flow chart of each state of the paper storage section are shown. 4...Paper storage section, 21...Detection means,
22... Lever integrated % 22a... Shutter &, 23... Paper end switch, 28...
...Rack, 29...Motor, 30...
...Pinion, 31...Guide rail. Age 9 Ward 17q (2)

Claims (1)

[Claims] a plurality of paper storage units; a detection unit that detects a paper end or an abnormal state of the transfer paper; and when the detection unit detects that there is no transfer paper in the paper storage unit or that the transfer paper is abnormal, the paper storage unit A feeding and finishing device such as a copying machine, which consists of a moving device that moves the image so that it is exposed to the outside.