JP3098824B2 - Paper feeder for copier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeder for a copying machine.

[0002]

2. Description of the Related Art A conventional paper feeder of this type is substantially similar to the present invention shown in the drawings, and will be described with reference to the drawings. It is detachably mounted on a copying machine main body (not shown) and includes a paper feed tray 1 having a friction roller 2 at an edge 12 on a take-out side. The bracket 14 is accommodated and rotatably supported by a bracket 14 imparted with an upward tendency by a compression spring 8. A projection 16 is provided on one side of the bottom of the bracket 14, and the projection 16 is provided on the sheet feed tray 1 on the upper surface of the projection 16. The pressing member 7 pivotally supported by the supporting shaft 6 and given a downward tendency by the tension spring 9 is in contact with the supporting member. In such a case, when the paper feed tray 1 is mounted on the copying machine main body, the push rod 5 provided on the copying machine main body engages with the pressing member 7 as shown in FIGS. By pressing the pressing member 7 against the force of the tension spring 9 to release the projection 16, the force of the compression spring 8 holds the friction roller 2 at the raised position in contact with the feed roller 3, and the copier When the push rod 5 is removed from the main body, the push rod 5 separates from the push member 7 as shown in FIGS. The roller 2 is separated from the feed roller 3 and moves to a lowered position accommodated in the edge portion 12.

[0003]

In the above-described apparatus, when the paper feed tray 1 is removed from the main body of the copying machine, the friction roller 2 is exposed and touches the operator's hand. The friction coefficient of the friction roller 2 may be reduced due to the oil content of the hand and cause double feeding or the like. If the paper feed tray 1 is left in such a state, the friction roller 2 is deteriorated by ultraviolet rays, and There is a problem that the paper performance is reduced.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the conventional paper feeding device, and when the paper feeding tray is removed from the copying machine main body, the friction roller is not exposed, and the operator is not required. The friction coefficient of the friction roller does not drop due to the oil content, etc., and double feed does not occur.Also, even if the paper feed tray is left in such a state, the friction roller is hand,
An object of the present invention is to provide a sheet feeding device capable of performing stable sheet feeding without deteriorating sheet feeding performance.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is directed to a first aspect of the present invention, wherein a friction roller is provided at an edge of a take-out side so as to be detachably mounted on a copying machine main body. A paper feed tray, wherein the friction roller is at an elevated position in contact with a feed roller provided on the copier main body when the paper feed tray is mounted on the copier main body; In a paper feeder of a copying machine, which is separated and located at a lowered position accommodated in an edge, a lid member for covering the friction roller when the friction roller is accommodated in the edge is provided. It is characterized by the following. According to a second aspect of the present invention, in the first aspect of the present invention, when the friction roller is at the lower position, the lid member automatically becomes a covering position for covering the lower surface of the friction roller. It moves to the open position.
According to a third aspect of the present invention, in the first or second aspect of the present invention, an indication is provided on the surface of the cover member when the cover member is at the covering position so as not to touch the friction roller.

[0006]

[Action] In the present invention as described above, serial to claim 1
The disclosed invention allows the lid member to be opened and closed manually.
According to the second aspect of the present invention , when the paper feed tray is at the raised position, it is pushed up by the friction roller to the open position, and the friction roller comes to the raised position and contacts the feed roller to feed the paper. When the tray moves to the lowered position, the tray automatically moves to the covering position where the friction roller is covered by its own weight. And Claim 3
In this case, the display provided on the surface of the lid member prevents the friction roller from being touched.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in the drawings, the same parts as those of the prior art described above are denoted by the same reference numerals, and the description thereof will be omitted. The lower ends of the pair of lid members 10 and 11 are attached to the front and rear sides of the opening of the blind hole
It pivots by giving the tendency to fall inward by its own weight of 0,11. When the paper feed tray 1 is at the raised position as shown in FIGS. 2 and 3, the lid members 10 and 11 are pushed up by the friction roller 2 to be in the open position, and the paper feed tray 1 is moved to the open position. When moving to the lowering position as shown in FIGS. 5 and 6, it automatically falls down inward due to its own weight and becomes the coating position where the friction roller 2 is coated. The lid members 10 and 11 are provided with a display on the surface when they are in the covering position so as not to touch the friction roller 2 to prevent the operator from touching the friction roller 2.

[0008]

The present invention is as described above. According to a first aspect of the present invention, there is provided a paper feed tray which is detachably mounted on a copying machine main body and has a friction roller at a take-out edge. When the paper feed tray is mounted on the main body of the copying machine, the paper feed tray is at a raised position in contact with a feed roller provided on the main body of the copier, and when removed, is housed in the edge portion away from the feed roller. When the paper feed tray is removed from the copier body, the friction roller is exposed because the cover is provided to cover the friction roller when it is housed in the rim. The friction coefficient of the friction roller is not reduced by touching the operator's hand and the friction coefficient of the friction roller is reduced. Can have the friction roller by ultraviolet rays is degraded, the paper feeding performance there is an effect that can perform stable feeding paper without such decreased. According to a second aspect of the present invention, in the first aspect of the present invention, when the friction roller is at the lowered position, the lid member automatically becomes a covering position for covering the friction roller. Since it is designed to move to the open position, the same effect as that of the first aspect of the present invention can be provided at a low cost without any special operation because of its simple structure. There is. According to a third aspect of the present invention, in the first or second aspect of the present invention, a display is provided on the surface of the cover member when the cover member is at the covering position so as not to touch the friction roller. In addition to the effect, it is possible to prevent the operator from accidentally touching the friction roller.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view when the friction roller is in a raised position.

FIG. 3 is a front view showing a state of a pressing member at the time of the above.

FIG. 4 is a partial cross-sectional view when the friction roller is in a lowered position.

FIG. 5 is a front view showing the state of the pressing member at the same time.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper feed tray 2 Friction roller 3 Feed roller 7 Pressing member 10, 11 Lid member 12 Edge

Claims (3)

(57) [Claims] 1. A paper feeding tray detachably mounted on a copying machine main body and having a friction roller at an edge on a take-out side, wherein the friction roller performs copying when the paper feeding tray is mounted on the copying machine main body. In a paper feeder of a copier, which is located at a raised position in contact with a feed roller provided on a main body of the machine, and which is separated from the feed roller when removed and is located at a lowered position accommodated in an edge portion. And a cover member for covering the friction roller when the friction roller is accommodated in the edge portion. 2. When the friction roller is at the lowered position, the lid member automatically becomes a covering position for covering the friction roller,
2. The paper feeder according to claim 1, wherein when the friction roller moves to the raised position, the friction roller moves to the open position. 3. The paper feeder of a copying machine according to claim 1, wherein an indication is provided on a surface of the cover member when the cover member is at the covering position so as not to touch the friction roller.