JPS59167426A - Paper feeder of copying machine - Google Patents

Abstract

PURPOSE:To facilitate the operation for attaching and detaching a cassette and to prevent moisture absorption of paper by attaching and detaching the cassette, with an opening and closing cover of the cassette engaged with guides to open and close the opening and closing cover, so as to eliminate the troublesome operation for opening and closing the opening and closing cover. CONSTITUTION:A cassette cover 8 is detachably fitted to the upper end opening portion of a paper feed cassette 7. The cassette cover 8 is provided with an opening and closing lid 8a hinged on the front portion thereof by a shaft 10 in such a manner as to open upward, and a spring is wound round the shaft 10 to urge the opening and closing lid 8a in the closing state. The forward end of the opening and closing lid 8a is provided with engaging portions 8b, 8c such as pin- like projections formed on both ends thereof. A support table 11 for supporting the cassette is projected on the opening lower end portion of a cassette insertion hole 6 of a copying machine body 1, and guide members 12, 13 for guiding the engaging portions 8b, 8c are fixed to both ends of the support table 11. Guide grooves 12a, 13a corresponding to the opening and closing loci of the engaging portions 8a, 8b are bored through the inner walls of the guide members 12, 13.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a copying machine in which a paper ejecting lid of a paper feed cassette mounted on a copying machine main body is opened and closed based on the attachment/detachment operation of the paper feed cassette. Regarding the paper feed device of the machine.

[Prior art]

As a conventional copying machine paper feeding device, for example, the one shown in FIGS.
There is a roller 3 that conveys paper A to a rotating photoreceptor drum 2 provided inside the copying machine main body l, and a roller 3 that conveys paper A to a rotating photosensitive drum 2, which is provided in the copying machine main body l, and It consists of a paper feed roller 4 that feeds the paper in the direction of the roller 3, a cassette insertion hole 6 in the copying machine main body l, and a paper feed cassette 7 that is equipped with an opening/closing lid 8 for taking out paper and is installed in the cassette insertion hole 6. ing.

In the above configuration, the opening/closing lid 8 of the paper feed cassette 7 containing paper is opened upward, the cassette 7 is inserted into the cassette insertion hole 6 of the copying machine main body l, and the paper feed roller 4 is inserted into the paper A.
After completing preparations for feeding the paper by placing it in pressure contact with
The paper is fed to the photoreceptor drum 2 via.

However, in the conventional copying machine paper feeding device, since the paper feeding cassette 7 has an opening/closing lid 8 having a hinge mechanism to prevent the paper A from absorbing moisture, when the cassette 7 is installed in the copying machine main body l, It is necessary to take out the cassette 7 from the cassette stand or the like, hold the cassette 7 with one hand, and open the opening/closing lid 8 with the other hand before inserting it into the insertion hole 6. For this reason, for example, in the case of a cassette 7 for large size paper such as A3 size, women and the like feel overcharged, making the installation work unstable and difficult to operate. Also, when I removed the cassette 7 from the copying machine main body 1, I forgot to close the opening/closing lid 8 and the paper A
There is also the risk of it absorbing moisture or getting dirty.

[Object and structure of the invention]

The present invention has been made in view of the above, and in order to eliminate the troublesome work of opening and closing the opening/closing lid and simplifying the work of attaching/detaching the cassette, the present invention is intended to simplify the work of attaching/detaching the cassette while the opening/closing lid of the cassette is engaged with the guide. To provide a paper feeding device for a copying machine in which an opening/closing cover can be opened and closed by attaching and detaching the cover.

The paper feeding device for a copying machine according to the present invention will be described in detail below.

〔Example〕

FIG. 3 shows an embodiment of the present invention, and parts that are the same as those in FIGS. 1 and 2 are indicated by the same reference numerals, so redundant explanation will be omitted. The opening/closing lid of the cassette cover 8 of No. 7 is opened and closed based on the operation of attaching and detaching the 8 ml cassette 7, thereby improving the operability of attaching and detaching the cassette 70.

That is, in this embodiment, a cassette cover 8, which is removably fitted to the upper end opening of the paper feed cassette 7, is hinged to the front part of the cassette cover 8 with a shaft 1O so that the opening/closing lid 8a opens upward. A spring (not shown) is wound around the shaft lO, and the opening/closing lid 8a is urged to be in the closed state. Further, engaging portions 8b and 8c such as pin-shaped projections are provided at both ends of the front end of the opening/closing lid 8a. On the other hand, a support stand 11 for supporting the cassette is protruded from the lower end of the opening of the cassette insertion hole 6 of the copying machine main body l, and at both ends of the support stand 11 are provided the retaining portions 8b.
, 8c are fixed.

The inner walls of the guide members 12 and 13 are provided with retaining portions 8b and 8.
Guide grooves 12a and 13m matching the opening/closing locus of c are bored.

In the above configuration, the opening/closing lid 8a of the cassette cover 8 of the paper feeding cassette 7 is always kept closed due to the elastic force of a spring (not shown), so that it is possible to forget to close the opening/closing lid 8a during storage. This also prevents paper A stored inside from absorbing moisture. To attach the paper feed cassette 7 to the copying machine main body l, hold the cassette 7 with both hands and press the support stand 1.
1 and insert it into the insertion hole 6 along the inner wall of the guide member 12.13. Then, the engaging portions 8b, 8c fit into the guide grooves 12L, 13&, and the guide grooves 12m, 13aK
a moves upward, so that the opening/closing lid 8a of the cassette cover 8 is opened upward and the cassette 7 is moved upward, as shown in FIG.
installation is completed. Since the opening/closing lid 8a opens as the cassette 7 is inserted in this way, the work of installing the cassette 7 can be simplified. When removing the cassette 7, the engaging portion 8
b and 8e move downward in the guide groove 2a113a, so the opening/closing lid 8a of the cassette cover 8 is closed downward. Therefore, the work of closing the opening/closing lid 8a can be omitted.

FIG. 5 shows another embodiment of the present invention, in which the guide member 22,
This embodiment differs from the one shown in FIG. 3 in that the engaging parts 8b and 8c are guided by tapered parts 22a and 23a that match the opening and closing trajectories of the retaining parts 8b and 8c. In such a configuration, when the supply cassette 7 is installed in the copying machine main body 1, the cassette 7 is placed on the support stand 11 and the guide member 2
When the cassette 7 is inserted into the insertion hole 6 along the inner wall of the guide member 22.degree. 23, the engaging portions 8b and 8c move upward along the tapered portions 22a and 23a of the guide member 22.degree. opens upward. Also, when removing the cassette 7, the engaging portion 8b.

8c moves downward along the tapered portions 22a, 23a, so the opening/closing lid 8a is closed. In the guide member 22, 23 according to this embodiment, the guide groove 12a as shown in FIG.
Since it is not necessary to provide I13&, there is an advantage that the structure and manufacturing are simple.

It should be noted that the engaging portions 8b, 8c and the guide members 12, 13, 22, 23 in the above embodiments may have various other structures. Further, it is also possible to have a structure in which the support stand ii is omitted.

〔Effect of the invention〕

As explained above, according to the copying machine paper feeding device of the present invention,
The opening/closing lid is opened and closed by attaching and removing the cassette while engaging the cassette lid with the guide, which eliminates the hassle of opening and closing the opening/closing lid and simplifies the work of loading and unloading the cassette. In addition, it is possible to prevent moisture absorption and staining of the paper during storage of the cassette.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the entire copying machine for explaining a conventional copying machine paper feeding device, FIG. 2 is a vertical sectional view of FIG. 1, and FIG. 3 is a copying machine feeder according to an embodiment of the present invention. A perspective view showing the main parts of the paper device; FIG. 4 is a side view for explaining the operation of FIG. 3;
FIG. 5 is a perspective view showing the main parts of a copying machine paper feeder according to another embodiment of the present invention. Explanation of symbols 1...Copying machine body, 2...Photoconductor, 3...
・Roller, 4...Paper feed roller, 6...Cassette insertion hole, 7...Paper feed cassette, 7a...Cassette body, 8...Cassette cover, 8a...Open/close lid, 8b, 8e...engaging part, io...shaft,
11...Support stand, 12,13,22.23...
・Guide member, 12a113 &... guide groove, 2
2m, 23m-tapered part. Patent applicant Fuji Xerox Co., Ltd.

Claims (1)

[Claims] A paper feeding device for a copying machine, which has a cassette whose cassette cover is provided with an opening/closing lid that forms a paper feeding opening, and the cassette is attached to a copying machine body to feed paper from the paper feeding opening, A paper feeding device for a copying machine, wherein the copying machine main body has a guide portion near a cassette insertion slot that engages with the opening/closing lid to open/close the opening/closing lid when the cassette is installed or removed.