JPH04109939U - paper feed roller - Google Patents

Abstract

(57) [Summary] [Purpose] The main feature of this invention is to provide a paper feed roller that can improve paper feeding defects. [Structure] The paper feed roller is installed so that the rotating surface is inclined with respect to the central axis of rotation, and when the paper feed roller rotates, it twists the paper toward the center, making it easier to separate the paper from the paper below. feed the paper one sheet at a time.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to paper feed rollers, especially paper storage cassettes in facsimile machines, copying machines, etc. The present invention relates to a paper feed roller that feeds sheets of paper stored in a sheet one by one.

0002

[Problems to be solved by conventional techniques and ideas]

Figure 3 is a diagram used to explain how to feed paper using a paper feed roller in a conventional copying machine. It is a diagram. Referring to FIG. A paper feed roller 3 is provided. The rotation surface of the paper feed roller 3 is perpendicular to the rotation axis. ing. A claw 4 is provided on the paper feeding side of the paper storage cassette 1. Therefore, double feeding of the paper 2 is prevented.

0003 When the paper feed roller 3 is rotated in the feeding direction, the friction between the paper feed roller 3 and the paper 2 Therefore, the sheet 2 is fed out linearly, and the claw 4 prohibits the feeding of other sheets. Only the top sheet 2 is fed.

0004 However, the friction coefficient of the paper feed roller 3 shown in Fig. 3 has decreased due to long-term use. Depending on the paper quality, paper feeding problems may occur.

[0005] Therefore, the main purpose of this invention is to provide a paper feed roller that can improve paper feeding defects. It is to be.

[0006]

[Means to solve the problem]

This idea is based on a paper feed rotor that feeds sheets of paper stored in a paper storage cassette one by one. The rotation surface is inclined with respect to the rotation center axis, and the The device is configured to twist the paper toward the center when feeding the paper. Ru.

[0007]

[Effect]

The paper feed roller according to this invention twists the paper toward the center when it rotates. This makes it easier to separate the sheets and prevents double feeding.

[0008]

[Example of idea]

FIG. 1 is a front view of one embodiment of this invention. In the example shown in FIG. The outer circumferential surface of the sheet is formed so that it comes into contact with the paper 2 from an oblique direction, and the sheet is attached to the rotating shaft 5. It is. In other words, the center of rotation of the rotating shaft 5 and the rotating surface of the feed roller 6 are perpendicular to each other. Rather, it is provided so as to be inclined at a predetermined angle.

[0009] FIG. 2 is a diagram showing a state in which paper is fed in an embodiment of this invention. Shown in Figure 1 As shown in FIG. Therefore, when the paper feed roller 6 rotates, it is possible to twist the paper 2 toward the center. , it becomes easier to separate from the paper underneath. By twisting the paper 2 towards the center. Therefore, since the width of the paper 2 is narrowed, the paper storage cassette 1 is provided on the paper feeding direction side. The claw 7 can be made larger, and double feeding of the sheets 2 can be further prevented.

0010

[Effect of the idea]

As described above, according to this invention, the rotating surface is inclined with respect to the rotation center axis. By installing a paper feed roller in the paper feed roller, when the paper feed roller rotates, the paper is It is possible to twist the paper in the opposite direction, making it easier to separate the paper from the paper below, and preventing double feeding. Can be stopped.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of this invention.

FIG. 2 is a diagram showing a paper feeding state according to an embodiment of the invention.

FIG. 3 is a diagram showing a state in which paper is fed by a conventional paper feed roller.

[Explanation of symbols]

1 Paper storage cassette 2 Paper 5 Rotation axis 6 Paper feed roller 7 Nails

Claims (1)

[Scope of utility model registration request] 1. A paper feed roller for feeding sheets of paper stored in a paper storage cassette one by one, the roller being provided so that its rotating surface is inclined with respect to the central axis of rotation, and when rotated, the roller feeds the sheets of paper one by one. A paper feed roller that feeds the paper by applying a twist toward the center of the paper.