JPH042910Y2 - - Google Patents

Description

[Detailed explanation of the idea] Technical field The present invention relates to a paper feeding device for a copying machine.

Prior Art Conventionally, a copying machine has a plurality of paper feeding means on the side of the main body, and the copy paper fed by each of these paper feeding means is fed through one paper feeding path that is shared with each other. A sheet feeding device is known that is configured to feed sheets of paper while merging toward one or more merging portions formed at appropriate locations in a sheet feeding path.

However, in the paper feeding device, the paper feeding path is formed by a shared guide plate on the side of the copying machine main body, and a merging guide plate on the side of the paper feeding means for merging the copy sheets into the merging section. Because it is covered, if copy paper jams in this paper feed path, the paper feed path exposed through the paper feed cassette insertion slot is narrow.
It becomes difficult to remove the jammed paper, and it is necessary to expose the paper feed path to a large extent, so increasing the distance between the paper feed means increases the size of the copying machine. The disadvantage is that the paper feed cassette must be removed.

Purpose The purpose of the present invention is to minimize the distance between the paper feeding means arranged in the copying machine main body, so that there is no need to remove the paper feeding cassette from the copying machine main body when copy paper jams. Another object of the present invention is to provide a paper feeding device that can easily remove jammed paper.

Configuration The present invention has a plurality of paper feeding means on the side of the copying machine main body, and the copy paper fed by each of these paper feeding means is passed through a shared paper feeding path. a common guide plate that is provided on the copying machine main body and serves as one of the copy paper guide surfaces forming the paper feed path; a paper feeding unit having the paper feeding means and a merging guide plate serving as the other copy paper guide surface facing the common guide plate and forming the paper feeding path and the merging portion, the paper feeding unit having the paper feeding means; The paper feeding unit is rotatably supported on the copying machine main body in a direction in which the merging guide plate is opened and closed relative to the plate.

Hereinafter, specific examples of the present invention will be described in detail based on the drawings.

In FIG. 1, a plurality of paper feed cassettes 2a, 2b, 2c, 2d, 2
A plurality of cassette insertion parts 1a,
1b, 1c, 1d, and 1e are formed, respectively.

A photoreceptor 3 rotatably arranged in the copying machine main body 1
Around, there is a static eliminator 4, a cleaning device 5,
Through a predetermined image forming process using an image forming device consisting of a charging device 6, an exposure device 7, and a developing device 8,
A toner image of a document 0 placed on the contact glass 10 on the top surface of the copying machine main body 1 is formed by the document feeder 9 . While this image forming process is being executed, the copy paper P is transferred from any one of the paper feed cassettes 2 to each merging section A by the paper feed roller 11 and the relay roller 12. and is fed through the paper feed path 13. This paper feed path 13 is formed by a common guide plate 14 on the copying machine main body 1 and a merging guide plate 15 on the paper feed roller 11 side.

The copy paper P fed through the paper feed path 13 is placed on standby with its leading edge reaching the registration rollers 16. This waiting copy paper P is fed again at the timing when its leading edge matches the leading edge of the toner image formed on the photoreceptor 3, and the image is recorded through the transfer device 17, separation device 18, and fixing device 19. Thereafter, the paper is ejected onto a paper ejection tray 22 through a copy paper ejection port 21 of the copying machine main body 1 by a paper ejection roller 20.

By the way, among the above-mentioned paper feed cassettes 2, the cassette insertion portions 1b, 1c, and 1d of the paper feed cassettes 2b, 2c, and 2d in the second, third, and fourth tiers from the top in FIG. are formed in each paper feed unit U ₁ , U ₂ , U ₃ which is rotatably supported with respect to the copying machine main body 1 so that its front surface can be opened and closed. These paper feeding units U ₁ , U ₂ ,
U ₃ includes paper feed rollers 11 corresponding to the respective paper feed cassettes 2b, 2c, and 2d, a merging guide plate 15, and one roller 12b of each relay roller 12 disposed beside the merging guide plate 15. are placed respectively. Therefore, this paper feed unit
As shown in FIGS. 3 and ₄ , which illustrate only the paper feed unit U 3, U ₁ , U ₂ , and U ₃ each move counterclockwise in FIG. By rotating, the paper feed path 13 can be exposed. Here, by arranging the support shafts 23 of each paper feed unit U ₁ , U ₂ , U ₃ on the side of the back side of the copying machine main body 1, the paper feed path 1
3 is exposed on the front side of the copying machine main body 1, making it easier to remove jam paper stuck in the paper feed path 13. Note that each paper feed unit U ₁ , U ₂ , U ₃ and the copying machine main body 1 are normally connected to the roller 12a of the copying machine main body 1 of the relay roller 12 by a locking means such as a magnetic catch or a hook. On the other hand, the rollers 12b of each paper feed unit U ₁ , U ₂ , U ₃ are locked in contact with each other. Further, the rotation of the paper feed roller 11 is controlled by a driven bevel gear disposed at the end of the support shaft 23 of the paper feed roller 11, and a driving bevel gear disposed at the side of the copying machine main body 1. On the other hand, the information is transmitted when the paper feed units U ₁ , U ₂ , and U ₃ engage in a locked state with the main body of the copying machine.

Note that the above-mentioned paper feeding unit may be configured such that a plurality of paper feeding cassettes 2c and 2d are inserted into one unit U ₂ (U ₃ ), as shown in FIG. 5, for example.

Effects In the paper feeding device of the present invention, the insertion portion of the paper feeding cassette includes a merging guide plate and a paper feeding means, and is arranged in a paper feeding unit that is supported to be openable and closable with respect to the main body of the copying machine. Therefore, if copy paper becomes jammed, there is no need to remove the paper feed cassette, and the paper feed path can be largely exposed, making it possible to easily remove jammed paper and minimizing the distance between each paper feed means. Can be set.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of a copying machine having a paper feeding device according to the present invention, FIG. 2 is a perspective view of the paper feeding device,
FIG. 3 is a partial perspective view of the paper feeding device shown in the above, FIG. 4 is a diagram showing the operating state of the paper feeding device shown in FIG. 3, and FIG. 5 is a perspective view showing another embodiment of the paper feeding device of the present invention. It is. 1... Copying machine main body, 1a, 1b, 1c, 1d,
1e...Cassette insertion section, 11...Paper feed roller,
12... Relay roller, 13... Paper feed path, 14...
...Common guide plate, 15...Merge guide plate, A...
Confluence, P...copy paper.

Claims (1)

[Claims for Utility Model Registration] A copying machine having a plurality of paper feeding means on the side of the main body,
Copy paper fed by each of these paper feeding means,
In a paper feeding device that feeds paper through a shared paper feeding passage toward at least one confluence formed at a proper location of the paper feeding passage, one of the paper feeding devices provided in the copying machine main body and forming the paper feeding passage A common guide plate that is a copy paper guide surface, a merging guide plate that is the other copy paper guide surface that faces the common guide plate and forms the paper feed path and the merging section, and the paper feeding means. A paper feeding device comprising: a paper feeding unit, wherein the paper feeding unit is rotatably supported on the copying machine main body in a direction in which the merging guide plate is opened and closed with respect to the shared guide plate.