JPH03216425A - Picture forming device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an image forming apparatus used as, for example, an electronic copying machine.

(Prior Art) Some electronic copying machines are equipped with a normal paper feed cassette inside the main body and a large-capacity paper feed device (hereinafter referred to as a large-capacity feeder) on the side of the main body. .

Paper fed from the paper feed cassette is sent to the image transfer section via a transport system, and paper fed from the large capacity feeder is sent to the image transfer section via another transport system. , images are transferred to each.

Incidentally, the large-capacity feeder is provided facing a conveyance system that conveys sheets from the paper feed cassette.

(Problem to be Solved by the Invention) However, in the past, because the large-capacity feeder was fixedly attached to the side of the copying machine body, the paper fed from the paper feed cassette became jammed in the conveyance system. In this case, there is a problem that the large-capacity feeder becomes an obstacle and the jammed paper cannot be easily removed.

Although the large-capacity feeder does not get in the way if removed, the large-capacity feeder is heavy and difficult to remove.

Therefore, in the present invention, when paper is jammed in the conveyance system,
It is an object of the present invention to provide an image forming apparatus in which a large-capacity paper feeding device can be easily moved and released from a conveyance system.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention provides an apparatus main body including an image transfer means for transferring an image formed on an image carrier onto a sheet of paper, a conveyance means for conveying the image to the image transfer means;
A paper feeding means is provided on the side surface of the apparatus main body facing the conveyance means and continuously supplies a large amount of paper, and the paper feeding means is slidable horizontally along the side surface of the apparatus main body. The invention is characterized in that it includes support means for supporting.

(Function) When paper is jammed in the conveyance means, the paper feeding means is moved along the support means to release it from the conveyance means, and then the paper jammed in the conveyance means is removed.

(Example) The present invention will be described below with reference to an example shown in the drawings.

Figures 1 and 2 show an electronic copying machine.
is the main body of the copying machine as the main body of the apparatus. The photocopy main body 1 is placed on a mounting table 21.

A photosensitive drum 2 is provided in the copying machine main body 1 so as to be rotatable in the direction of the arrow, and a charger 3, an exposure section 4, and a developing device are arranged around the photosensitive drum 2 in order along the direction of rotation. 5a, 5b, transfer, peel charger-6.7
, a cleaning device (cleaning means) 8 and a static eliminator 9 are provided.

A conveyance path 10 is provided approximately at the center of the copying machine main body 1, and the conveyance path 10 sequentially includes the following along the conveyance direction of the paper P.
registration roller 12, the above-mentioned transfer and peeling charger 6,
7, conveyor belt 11, fixing device 13 and discharge port 14
is installed.

A large capacity feeder 22 serving as paper feeding means is provided on one side of the copying machine main body 1, and a sorter 23 is provided on the other side.

A take-out roller 24 is provided above the large-capacity feeder 22, and the paper P taken out by the take-out roller 24 is sent to the registration roller 12 by a paper feed roller 25.

Furthermore, paper feed cassettes 26 and 27 are disposed above and below the mounting table 21 as a first paper feeding section, and these paper feeding force sets 26 and 27 are connected to the front surface of the mounting table 21. It is designed for people to come in and out from.

The paper P in the paper feed cassette '26, 27 is taken out by the big up rollers 28 and 29, and this paper P is sent to the registration roller 12 by the paper feed rollers 31 and 32 via the conveying means 33. ing.

In addition, the . Canopy on top side, exposure system 41
is provided.

This exposure system 41 includes an exposure lamp 42 and a first reflection mirror 43 provided on a first carriage (not shown), and second and third reflection mirrors 44 provided on a second carriage (not shown). .45, a lens 46, and fourth to sixth reflecting mirrors 47, 48, and 49.

The first and second carriages are configured to reciprocate along a document glass 50 provided on the upper surface of the copying machine main body 1.

Reference numeral 51 denotes a line flow fan, and the line flow fan 51 exhausts hot air inside the main body 1 of the copying machine to the outside.

By the way, the large capacity feeder 22 is shown in FIGS. 2 and 3.
As shown in the figure, its upper and lower parts are slidably supported by guide rails 55, 55 as supporting means,
The mounting table 21 can be moved back and forth in the horizontal direction along the side surface thereof.

When the large-capacity feeder 22 is moved rearward, the conveyance system 33 is exposed to the outside. Third
As shown in the figure, the moving distance 1 of the large-capacity feeder 22 is approximately 1/2 of the width of the large paper sheet.

As shown in FIG.
6a, 56b, a paper guide 57 and a feed roller 58, which are spaced apart from and opposite to these Baber guides 56a, 56b.
As shown in FIG. 5, the paver guide 57 is vertically divided into two parts, and one of the divided paver guides 60 is rotatably attached. The width dimension of this divided barber guide 60 is smaller than the moving distance l of the large capacity feeder 22.

Further, a handle 61 is attached to the divided paver guide 60, and the divided paver guide 60 can be opened by holding this handle 61.

During image formation, the exposure system 41 exposes the document to light, and an image of the document is formed on the surface of the photoreceptor drum 2 . The surface of the photosensitive drum 2 is charged by a charging charger 3, and an electrostatic latent image of the document is formed by the image formation. This electrostatic latent image is transferred to a developing unit 5 by rotation of the photoreceptor drum 2.
a or 5b, and this developing device 5a or 5b
Toner as a developer is supplied from.

On the other hand, at this time, the paper feed cassette 26 or 27
Alternatively, sheets of paper are taken out one by one from the large-capacity feeder 22 and sent to the pair of registration rollers 12. After the paper is aligned by the registration roller pair 12, it is sent to the image transfer section 6a between the photosensitive drum 2 and the transfer charger 6.
The image is transferred. The paper to which this image has been transferred is peeled off from the photosensitive drum 2 by the action of a peeling charger 7.

Then, this peeled paper is sent to the fixing device 13, and after the image is fixed in this fixing device 13,
The paper is discharged to the sorter 23 via the .

By the way, during image formation, the paper fed from the paper feed cassette 26 or 27 may become jammed in the conveyance system 33. In this case, first, as shown in FIG. 5, the large-capacity feeder 22 is slid backward by a distance l along the guide rails 55, 55 as indicated by the arrows. Thereby, the transport system 33 is exposed to the outside. After that, the divided paver guide 60 that constitutes the conveyance system 33
When the handle 61 is grasped and pulled, the divided Baber guide 60 is rotated and opened as shown in FIG.

After opening in this way, the paper P stuck in the transport system 33 is taken out and removed.

As described above, if paper becomes jammed in the transport system 33, the large capacity feeder 22 can be moved to release it from the transport system 33, so the large capacity feeder 22 does not get in the way and the paper can be easily removed. can be removed.

Moreover, since the large-capacity feeder 22 is slidably supported by the guide rails 55, 55, it can be easily moved.

[Effects of the Invention] As explained above, according to the present invention, when paper becomes jammed in the conveyance system, it is possible to move the second paper feeding section to release it from the conveyance system, and it is possible to remove the paper from the conveyance system, unlike the conventional paper. , the paper can be easily removed without the second paper feeding section getting in the way.

Further, since the second paper feed section is slidably supported by the support means, it is possible to easily move the second paper feed section.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic configuration diagram showing the inside of an electronic copying machine, Fig. 2 is a perspective view of its external appearance, and Fig. 3 shows the moving distance of a large-capacity feeder. Perspective view,
FIG. 4 is an explanatory view showing a state in which the webber guide is opened, and FIGS. 5 and 6 are explanatory views showing the operation of removing paper jammed in the conveyance system. 1... Copying machine main body (apparatus main body) 2... Photosensitive drum (image carrier), 6a... Image transfer section, 26.27.
...Paper feed cassette, 33...Transporting means, 22...Large capacity feeder (paper feeding means) 55.55...Guide rail (supporting means).

Claims (1)

[Claims] an apparatus main body including an image transfer means for transferring an image formed on an image carrier onto a sheet of paper; a conveyance means for conveying the sheet to the image transfer means; and a side surface of the apparatus body facing the conveyance means. The apparatus is characterized by comprising: a paper feeding means for continuously supplying a large amount of paper; and a supporting means for supporting the paper feeding means so as to be slidable in the horizontal direction along the side surface of the main body of the apparatus. Image forming device.