JPS626034Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper feeding device suitable for copying machines, particularly electrophotographic copying machines.

Conventionally, copying machines, especially high-end machines, have been equipped with multiple paper feed trays or multiple paper feed cassettes that can be loaded at the same time, so that copy paper of different sizes can be arbitrarily selected. In addition to paper feed, it is also required to be able to manually feed any desired single sheet material.

In such a configuration, each paper feeding system and its switching mechanism are required, making the device complicated and costly, and there are various problems such as complicating the jam processing mechanism and reducing its operability. . Furthermore, space is required for installing a plurality of paper feed trays or paper feeding devices of the cassette loading mechanism, which increases the size of the entire machine, which is inconvenient in meeting the demand for miniaturization of the entire device as much as possible.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide an apparatus capable of automatic paper feeding and manual paper feeding that is extremely effective and suitable for micro-transportable copying machines in particular.

In other words, the present invention includes a paper feeding means that is provided in the paper feeding section of the main body of the copying machine and feeds the sheets of the cassette loaded in the paper feeding section one by one, and a cassette loading means that guides the cassettes to the paper feeding section. It is attached to the copier main body so that it can move between a closed state that covers the opening and the cassette loading opening, and a protruding state that opens downwardly outside the main body of the copying machine. This paper feeding device for a copying machine is characterized in that the cassette is mounted on the copying machine by placing the cassette on the opening/closing lid in a protruding state.

The embodiments shown in the accompanying drawings will be described below.

First, an example of an ultra-compact portable copying machine to which the present invention is applied will be described. A document 2 on a document glass 1 is scanned by an illumination lamp 3, a short-focus small-diameter imaging element array 4, and a charger 5. A latent image is formed on the photosensitive master 6. During this time, the photosensitive master 6 is stopped, but after the latent image is formed, the photosensitive master 6 starts rotating counterclockwise in the figure and is developed by the developing roller 7 that carries toner, synchronizing with the start of the photosensitive master 6. Copy paper 8 is fed. The image is transferred onto the copy paper 8 by the transfer charger 9, and then fixed on the copy paper 8 via the fixing device 10, and then discharged onto the tray 11. After the transfer, the photosensitive master 6 begins to rotate clockwise in the figure, is cleaned by the cleaning roller 12, and returns to its initial position, completing the entire copying process. The copy paper 8 is conveyed while being supported by a gripper 14 on an endless belt 13.

Needless to say, from the second sheet onward, multiple copies can be made by repeating the above process.

The copying machine exemplified above has the advantage of being extremely compact due to its configuration and being portable and easily carried to conference locations or sales activities.

In such a small-sized copying machine, if a copy paper feed tray or cassette tray is provided inside the copying machine main body, a space is required and the purpose of miniaturization is lost.

Therefore, the present invention prevents the overall size of the copying machine from increasing in size by providing a structure in which a copying paper cassette is removably loaded as an attachment into the main body of the copying machine. Furthermore, it is possible to manually feed any paper or the like and make copies at any time.

To explain the illustrated embodiment in detail, a loading opening 18 for the cassette 15 is provided in the main body wall surface 17 facing the paper feed roller 16 for feeding the copy paper 8 stored in the cassette 15. The lid 19 is attached to the main body at the lower part by a shaft 20 so as to open downward to the outside, and this is attached to the copy paper cassette 15.
At least the front part thereof is made to have sufficient strength to be supported by the structure described below.

When the opening/closing cover 19 is opened to use the cassette mounting table as shown in FIG. 1, the front end of the cassette 15 is positioned by hitting the paper feed guide 21,
The uppermost surface of the copy paper 8 stacked on the inner bottom 23 that is pushed up by the inner base 23 comes into contact with the paper feed roller 16, and the roller 16 rotates in response to a timing signal and feeds it between the single-sheet photosensitive master 6 and the belt 13. It is configured to be gripped by a gripper 14.

FIG. 2 shows a state in which the opening/closing lid 19 is closed, and at this time, the paper feed guide 21 is pushed out by the spring 24 to just below the paper feed roller 16. A manual feeding guide opening 25 opening toward the space between the roller 16 and the guide 21 is provided in the lid 19. However, the guide port 25 is provided as 26 in a part of the wall surface 17 above the lid 19, and the copy paper 8 is guided by a fixed guide 27 between the roller 16 and the guide 21.
It is also possible to guide the

FIG. 3 shows a support mechanism for the cassette 15. In the figure, a concave protrusion 28 is integrally formed on the opening/closing lid 19, and a convex protrusion 28 is formed on the cassette 15 side corresponding to the concave part. 29 is provided. When the cassette 15 is inserted into the main body along the opening/closing lid 19, the convex protrusion 29 on the side of the cassette 15 is inserted into the lid 19.
The cassette 15 is supported on the lid 19 by fitting into the concave protrusion 28 of the lid 19. The cassette 15 inserted as described above comes into contact with the guide 21 to set its position. In addition to the above structure, the support mechanism for the cassette may include a protrusion 28 provided on the main body of the apparatus,
Other deformation mechanisms can be applied.

As mentioned above, an opening/closing lid is provided on the cassette loading slot of the copying machine main body, and the paper feed cassette is supported on top of the lid when it is open, so there is a space for inserting the cassette deeply into the main body and supporting it. And the main body can be made smaller without requiring any means. When the lid is closed, it does not get stuck, so you can get a compact copying machine that is suitable for carrying.

When the opening/closing lid is closed and the loading slot is closed, a manual paper feed opening is formed between the lid and the wall surface in the loading slot, and a common paper feeding means is used for manual paper feeding and automatic paper feeding from the cassette. Since it is used, the paper feeding means is not required twice and is simplified, and the number of mechanisms that cause jams is reduced.

[Brief explanation of the drawing]

The drawings illustrate the present invention; Fig. 1 is a vertical cross-sectional view of the copy paper cassette loaded, Fig. 2 is a longitudinal cross-sectional view of a portion of the copy paper cassette in use, and Fig. 3 is an explanation of the cassette support mechanism. figure. 17 is the main body of the copying machine, 19 is an opening/closing lid (cassette mounting stand), 18 is a loading opening (cassette loading port), 2
5 and 26 are manual feed guide openings (openings), and 16 is a paper feed roller.

Claims (1)

[Scope of Claim for Utility Model Registration] A paper feeding means 16 that is provided in a paper feeding section in the main body of the copying machine and feeds sheets one by one, and a cassette loading opening for inserting a cassette 15 into this paper feeding section. 18; a closed state covering the cassette loading opening 18;
It is attached to the copying machine main body so that it can be moved to a protruding state in which it is opened and protruded downward from the exterior of the copying machine main body, and when the loading opening 18 is open and protruded to the outside, it serves as a mounting table that supports the cassette 15 to be loaded, and when it is closed. In this state, it has an opening/closing lid 19 that forms openings 25 and 26 for manual paper feeding that guide sheet materials to the paper feeding section at the position of the loading opening 18, and selectively performs cassette paper feeding and manual paper feeding. A paper feed device for a copying machine characterized by being able to.