JPH058275Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) The present invention relates to a paper feeding device, and more specifically, to a paper feeding device that can be applied to copying machines, printing machines, etc. that store transfer paper inside the main body. It is.

(Prior Art) An example of a conventional copying machine in which transfer paper is stored inside the main body is shown in FIGS. 9 and 10. In the figure, a drawer member 23 serving as a cassette ejecting member in which a cassette 22 for storing transfer paper 21 is installed is provided at the bottom of a main body 20 of the copying machine so that it can be taken out and taken out. The main body 20 is equipped with a known copying mechanism, in particular a photosensitive drum 24.
Because of its configuration, it has to be installed far into the main body 20 from the operation side of the main body 20 where the operator stands. Therefore, the transfer paper 21 is also set to the back of the main body 20 accordingly.

In order to reduce the installation space of recent copying machines, a so-called front loading mechanism has been proposed in which the cassette is loaded from the operator's side, as in this conventional apparatus.

However, in the conventional device described above, the cassette 22 is installed relatively deep inside the main body 20, and the distance 1 ₁ from the side wall 23a of the drawer member 23 to the side wall 22a of the cassette 22 is absolutely necessary. be. Then, from the main body 20 to the cassette 22
When taking out the cassette 22, the drawer member 23 is pulled out from the main body 20 so that the cassette 22 can be attached and detached without any inconvenience. . The pull-out distance 1a of the pull-out member 23 causes inconveniences such as blocking a passage in a narrow space when replacing the cassette 22 or the like.

(Objective) It is an object of the present invention to eliminate the disadvantages of the prior art described above and to provide a paper feeding device in which the distance from the main body of a drawer member containing a cassette, that is, a cassette ejecting member, is shortened.

(Structure) In order to achieve the above object, the present invention includes a cassette for storing transfer paper to be subjected to a predetermined transfer operation inside the apparatus main body, and a cassette that is installed on the upper side, and a cassette retrieval member that can be pulled out from the cassette to the outside of the apparatus main body; and a cassette moving member that is interposed between the cassette retrieval member and the cassette and moves the installation position of the cassette on the cassette retrieval member to a predetermined position. and when taking out the cassette from the cassette take-out member,
The installation position of the cassette in the cassette take-out member is changed from the first position for paper feeding operation to the second position closer to the cassette take-out side of the cassette take-out member via the cassette moving member. This device is characterized in that it is configured to move in conjunction with the drawing operation of the cassette ejecting member.

Hereinafter, the present invention will be explained in detail based on embodiments.

1 to 5 show a first embodiment of the present invention.

In the figure, the upper part of the copying machine main body 1 is equipped with a presser plate 2 and an operating section 3 for operating the copying machine in various modes, as is known in the art. At the bottom of the main body 1 is a cassette 5 for storing transfer paper 4.
A drawer member 6 on which is installed is provided so as to be freely put in and taken out. Further, a known copying mechanism is equipped inside the main body 1, and a photosensitive drum 7 is rotatably supported by a frame 8 and installed at the back of the main body 1.

The cassette 5 is located inside the main body 1 at a position corresponding to the photosensitive drum 7, and is configured to feed transfer paper 4 each time a copying operation is performed. Then, with the drawer member (hereinafter the same) 6 as a cassette take-out member shown in FIG. 1 being pulled out, the cassette 5 is attached and detached, and the size of the transfer paper 4 is changed or the paper is replenished.

In this embodiment, as shown in FIG.
A first position A in which the drawer member 6 is inserted into the main body 1 and a copying operation is possible, and a second position A in which the drawer member 6 is pulled out from the main body 1 and opens a take-out portion 9 in which the drawer member 6 can attach and detach the cassette 5 to the main body 1. 2 and the position of the cassette 5, and the distance from the operation surface 1a of the main body 1 (equal to the position of the outside 6a of the drawer member 6) to the one side 5a of the cassette 5 at the first position A 1 ₁ and the distance 1 2 from the outside 6a of the drawer member 6 to the one side 5a of the cassette 5 at the second position B is _{1 1}
The relationship is set to >1 ₂ .

As a result of this configuration, compared to the pull-out distance 1a of the pull-out member 6 in the conventional device, the pull-out distance 1b of this embodiment is shorter, 1a>1b, and the area occupied by the pull-out member 6 when replacing the cassette 5 is reduced. It becomes less.

Next, an example of a mechanism for moving the above-mentioned cassette 5 with respect to the drawer member 6 will be explained. FIG. 3 shows the main body 1 in the first position A of the cassette 5.
FIG. 4 is a plan view of the drawer member 6 portion inside the main body 1, illustrating the state in which the cassette 5 is in the second position B, and FIG. 5 is a partial perspective view of the main part. It is a diagram.

In the drawing, a pair of arms 11 are provided on the back surface of the drawer member 6, with the shaft 10 as the center of rotation.

This arm 11 has boss portions 12a and 12 at both ends.
b is fixed, and one boss portion 12a is attached to the main body 1.
The other boss portion 12b is inserted into a longitudinally elongated small hole 13 formed on the lower surface of the cassette 5.

When the operator attempts to replace the cassette 5 by pulling out the drawer member 6 from the state shown in FIG. 3 to the state shown in FIG. 4, the cassette 5 is placed on the drawer member 6 and is pulled out together. When one boss portion 12a of the arm 11 inserted into the hole 19 of the main body 1 comes into contact with the end surface 19a of the hole 19, the arm 11 rotates around the shaft 10, and the other boss portion 12b of the arm By pushing the small hole 13 of the cassette 5, the cassette 5 moves to the right in the drawing within the drawer member 6, and as a result, the amount of movement of the cassette 5 becomes greater than the amount of movement of the drawer member 6, and as shown in FIG. The wasted space 1 ₁ in the drawn out state of the drawer member 6 shown in FIG. 1 can be shortened to 1 ₂ in the drawn out state.

Further, when setting the drawer member 6 into the main body 1, by performing a reverse operation, one boss portion 12a of the arm 11 is inserted into the other end surface 19 of the hole 19 of the main body 1.
b, the cassette 5 moves inside the drawer member 6 and returns to the first position A where the paper is fed.
(the state shown in Figure 3).

6 and 7 show another example of a mechanism for moving the cassette 5 with respect to the drawer member 6. In FIG. In the figure, a cassette holder 14 is arranged on a drawer member 6 provided in the main body 1, and a cassette 5 is stored in the cassette holder 14. Cassette cradle 14
One end of the return spring 15 is fixed to the main body 1, and the other end of the return spring 15 is fixed to one side of the return spring 15, and the other end is wound around a pulley 16 rotatably supported on the drawer member 6.
One end of the wire 17 is fixed to the main body 1, and the other end of the wire 17 is fixed to the main body 1.

Therefore, as shown in FIG.
When the cassette holder 14 is pulled out from the main body 1, the cassette holder 14 is moved to the right by the wire 17 due to the movement of the pulley 16 while stretching and accumulating the return spring 15. At this time, when the drawer member 6 is pulled out by 1 as shown in FIG. 7, the cassette holder 14 is moved by 21 by the movement of the pulley 16.

In this way, the cassette 5 is moved from the state of the first position A for performing the copying operation shown in FIG. 6 to the state where the drawer member 6 shown in FIG. to the second position B.

Further, when setting the drawer member 6, when the drawer member 6 is pushed into the main body 1, the cassette holder 14 is automatically moved to the first position A (the state shown in Fig. 6), which is the paper feeding state, by the return spring 15. Can be set.

In addition, as shown in FIG.
7 around the large diameter portion 16a and the small diameter portion 16b, the amount of movement of the cassette holder 14 can be set.

Further, although the above embodiment has been described in connection with a copying machine, the present invention can be applied to a type of apparatus such as a printing machine in which transfer paper is stored inside the main body.

(Effects) As explained above, the present invention can shorten the distance from the main body of the cassette ejecting member containing the cassette without affecting the paper feeding operation.
It is possible to provide a paper feeding device that has great practical effects, such as reducing the space for operating the cassette and improving the operability of the drawer.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a first embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of the same embodiment, and Fig. 3 is a plan view of the drawer member portion illustrating the state in which the cassette is in the first position A. Figure 4 shows the second position B of the cassette.
FIG. 5 is a partial perspective view of the main parts, FIG. 6 is a sectional view showing the second embodiment, and FIG. 7 is the operating state of the second embodiment. FIG. 8 is a side view for explaining the third embodiment, FIG. 9 is a perspective view of the conventional example, and FIG. 10 is a longitudinal sectional view of the conventional example. 1...Main body, 4...Transfer paper, 5...Cassette, 6...Drawer member, 9...Takeout section, A
...First position, B...Second position.

Claims (1)

[Claims for Utility Model Registration] A cassette for storing transfer paper to be subjected to a predetermined transfer operation inside an apparatus main body, and the cassette is installed on the upper side, and the transfer paper is transferred from the inside of the apparatus main body to the outside of the apparatus main body. a cassette removal member that can be pulled out; and a cassette moving member that is interposed between the cassette removal member and the cassette and moves the installation position of the cassette on the cassette removal member to a predetermined position; When taking out a cassette from the cassette take-out member, the cassette is moved from a first position for paper feeding operation to a second position closer to the cassette take-out side of the cassette take-out member. (f) a paper feeding device configured to move in conjunction with the pulling operation of the cassette ejecting member via the cassette moving member;