JPH09216748A - Paper feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper feeder with a few number of parts constituted simply. SOLUTION: This paper feeder is installed in a facsimile device 31 and provided with a paper feed roller 4 driven by a motor 1 and a paper feed auxiliary roller 5 driven to this paper feed roller 4. A paper feed roller 6 is arranged next to the paper feed auxiliary roller 5 and gears 7, 8 are formed integrally with shafts respectively on the shafts of the paper feed auxiliary roller 5 and the paper feed roller 6 and connected through a gear 9. A drive force is transmitted to the paper feed roller 4 through a gear 2 from the motor 1 and the paper feed auxiliary roller 5 is also rotated thereby. This rotation is transmitted to the paper feed roller 6 through the gears 7, 9, 8 and the paper feed roller 6 is also rotated and a paper 15 is transfered in an arrow mark direction. A hand scanner 10 attachably/detachably installed against the paper feed roller 6 builds in a lighting means for lighting document and a read means for reading an image signal by the reflection light from the document.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeding device, and more particularly to a paper feeding device which realizes a compact structure by devising a driving mechanism.

[0002]

2. Description of the Related Art A conventional paper feeding device will be described in detail with reference to the drawings. Referring to FIG. 5, the conventional device includes a motor 1 serving as a drive source, a transmission gear 2, and a paper passing surface (paper 1).
The paper feed roller 4 is disposed on the side of the drive source with respect to the surface (where 5 passes), the paper feed auxiliary roller 5 that is in contact with the paper feed roller 4, and the paper feed roller 6.

The paper feed roller 6 is attached to a shaft 13 having a gear 14 on its end face, and the gear 14 is connected by gears 11 and 12. The driving force was transmitted to the paper feed roller 6 via these gears.

[0004]

However, in the above-described conventional paper feeding device, since the driving force is transmitted to the paper feeding roller 6 mounted on the side facing the drive source with respect to the paper passing surface, a plurality of paper feeding rollers are provided. The gears and the parts for drive transmission, such as the shaft, which requires a length up to the outside of the paper passing portion, were required. That is, there is a problem that the number of parts increases.

The reason is that the drive transmission gear of the paper feed roller 6 needs to be arranged outside the paper passing portion so as not to interfere with the paper feed.

Therefore, it is an object of the present invention to provide a paper feeding device having a small number of parts and a simple structure.

[0007]

In order to solve the above problems, the present invention is directed to a paper feed roller 4 driven by a drive source 1 and a paper feed auxiliary driven by the paper feed roller 4 as shown in FIG. In the paper feeding device including the roller 5, the paper 1
Another paper feed roller 6 that is rotated by the rotational force of the paper feed auxiliary roller 5 is provided on the side of the paper feed auxiliary roller 5 with respect to the paper passing surface of 5.

When the paper feed roller 4 on the drive source 1 side rotates with respect to the paper passing surface, the paper feed auxiliary roller 5 facing and in contact with this also rotates. This rotation is transmitted to the paper feed roller 6 via gears 7, 9, and 8, for example.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. Referring to FIG. 1, in the first embodiment of the present invention, a motor 1 serving as a drive source, a transmission gear 2, and a drive source 1 with respect to a paper passing surface (a surface through which the paper 15 passes)
Side paper feed roller 4 and the paper feed roller 4
A paper feed auxiliary roller 5 and a paper feed roller 6 that are in contact with and are in contact with.

Paper feed auxiliary roller 5 and paper feed roller 6
Gears 7 and 8 are formed integrally with the shaft, respectively, and these are connected via a gear 9.

Next, the operation of the first embodiment will be described. The driving force is transmitted from the motor 1 as a driving source to the paper feed roller 4 via the gear 2. As a result, the paper feed auxiliary roller 5 facing the paper feed roller 4 and in contact therewith also rotates. This rotation is transmitted to the paper feed roller 6 via the gears 7, 9 and 8, and the paper feed roller 6 also rotates to convey the paper 15 in the direction of arrow 3.

By doing so, the number of parts can be reduced by reducing the gears for driving the paper feed roller 6. For example, in the above example, the gear 1 in the conventional device of FIG.
1 and 12 can be reduced, the shaft 13 can be shortened, and the manufacturing cost can be reduced. Further, since the long shaft 13 (FIG. 5) used in the conventional device is eliminated, the device can be downsized.

Next, a second embodiment of the present invention will be described. This embodiment is an example in which the paper feeding device is used in a facsimile machine, and as shown in FIG.
In the above, the scanner unit 10 is arranged so as to face the paper feed roller 6. Other configurations are the same as those in FIG.

The scanner unit 10 has a built-in illuminating means for illuminating a document and a reading means for reading an image signal by the reflected light from the document, and is detachable and can be manually read and scanned.

For example, as shown in FIG. 3A, the hand scanner 10 is attachable to and detachable from the recess 31a of the facsimile main body 31. As shown in FIG. 3B, the reading unit (indicated by a triangle mark in the drawing) of the hand scanner 10 taken out from the main body 31 is brought into contact with the original 32 and moved in the direction of the arrow to read.

As described above, according to the apparatus of the second embodiment, the apparatus can be made compact when the hand scanner is incorporated. That is, FIG.
As shown in (a), the hand scanner 10 is added to the conventional device.
If the device is mounted, the width W1 of the device becomes long because of the shaft 13, but according to the device of the second embodiment shown in FIG. 4B, since the shaft 13 is not provided, the width W2 of the device is It can be made smaller than the device width W1.

[0017]

As described above, according to the present invention, the number of parts such as gears and shafts for transmitting driving force to the paper feed roller mounted on the side facing the drive source with respect to the paper passing surface is eliminated. Thus, the paper feeding device can be configured with a simple configuration. The reason is that the driving force of the paper feed roller mounted on the side facing the drive source with respect to the paper passing surface is obtained from the paper feed auxiliary roller.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention, in which (a)
Is a side view, and (b) is a plan view.

FIG. 2 is a view showing a second embodiment of the present invention;
Is a side view, and (b) is a plan view.

FIG. 3 is a diagram for explaining the operation of the second embodiment,
(A) is a figure which removed the hand scanner from the facsimile main body, and (b) is a figure which shows the manual reading state of a hand scanner.

FIG. 4A is a diagram showing a state in which a hand scanner is attached to a conventional device, and FIG. 4B is a diagram showing a state in which a hand scanner is attached to the paper feeding device of the second embodiment.

FIG. 5 is a schematic view of a conventional paper feeding device, (a) is a side view and (b) is a plan view.

[Explanation of symbols]

 1 motor 2 gear 3 arrow indicating the paper feeding direction 4 paper feeding roller 5 paper feeding auxiliary roller 6 paper feeding roller 7 gear 8 gear 9 gear 10 scanner unit 11 gear 12 gear 13 shaft 14 gear 15 paper 31 facsimile main body 31a recess 32 original

Claims (4)

[Claims] 1. A paper feeding device comprising a paper feeding roller driven by a driving source and a paper feeding auxiliary roller driven by the paper feeding roller, wherein the paper feeding auxiliary roller is provided on a side of the paper passing surface of the paper. A paper feeding device comprising another paper feeding roller which is rotated by the rotational force of the paper feeding auxiliary roller. 2. The paper feeding device according to claim 1, further comprising a scanner unit that is built in a reading unit that reads a document and that is detachable and that is capable of manual reading and scanning, facing the other paper feeding roller. 3. A paper feed device in which the driving force of a paper feed roller 6 mounted on the side facing the drive source 1 with respect to the paper passing surface is in contact with another paper feed roller 4 having a driving force. A paper feeding device, which is obtained from the auxiliary roller 5 via a gear, a belt, or the like. 4. An image is formed by illuminating means for illuminating a document and light reflected from the document on the side of the paper feed roller 6 which receives the driving force from the paper feed auxiliary roller 5 facing the paper passing surface. 4. The paper feeding device according to claim 3, further comprising a scanner unit 10 which has a built-in reading means for reading a signal and which is detachable and is capable of manually reading and scanning.