JPS6327339A - Paper width detecting mechanism - Google Patents

Abstract

PURPOSE:To easily detect the width of a sheet of paper by opening and closing two or more switches provided on a roller guide which is interlocked with a guide on the side of a sheet of paper of a paper feeding cassette. CONSTITUTION: A paper guide 2 installed on a paper feeding cassette 1 is moved on the paper feeding cassette 1 in accordance with the width of a sheet of paper. A guide part 3 which slides in along the side wall of a roller guide 4 when the cassette 1 is inserted in the direction of the arrow (a), is provided on the paper guide 2. When the cassette 1 is inserted up to a prescribed position, the roller guide 4 is moved to a position corresponding to the width of a sheet of paper. A switch guide part 5 for depressing switches SW6, SW7 is provided on the roller guide 4, and the width of a sheet of paper is detected by the combination of the opening and closing of the switches 6, 7. Thereby, the width of a sheet of paper can be detected by a simple device.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feeding mechanism for terminal equipment, etc., and particularly to a paper width detection mechanism.

[Conventional technology]

In the conventional paper width detection mechanism, a detecting body is provided at the paper feeding force center and a detected body is provided on the paper feeding mechanism main body side. The object to be detected and the object to be detected were in one-to-one correspondence with respect to a prescribed paper width based on paper feeding power.

Figure 3 shows an example of a conventional paper and detection mechanism, in which a magnet is used as the detection object and a Hall element is used as the detection object.The magnet 11 as the detection object is attached to the paper side guide 12 of the paper feed cassette, and Move accordingly. The Hall elements 13, which are objects to be detected, are attached to the main body of the paper feeding mechanism, and are arranged one-to-one at positions corresponding to the paper width to be detected.

[Problem that the invention seeks to solve]

The conventional paper width detection mechanism described above has a detection object on the paper feed mechanism main body side and a detection object on the paper feed force center, so it is necessary to adjust the gap between them, and it is necessary to adjust the gap between them. In order to detect this, a plurality of objects to be detected and objects to be detected are required, resulting in a mechanically complex configuration.

[Failure to solve the problem]

The paper width detection mechanism of the present invention includes a paper side guide of a paper feed cassette, a roller guide that moves in conjunction with the paper side guide, and two or more switches that move in conjunction with the roller guide.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

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

A paper guide 2 attached to the paper feed cassette 1 moves on the paper feed cassette 1 according to the paper width. When inserting the paper feed force section in the direction of arrow a, the roller guide 4
A guide portion 3 is provided which slides along the side wall of the device.

When paper cassette 1 is inserted to the specified position, it will appear as shown in Figure 2 (5).
) to (q), the position of the roller guide 4 is set corresponding to each paper width.
6, a switch guide part 5 for pressing down the sw 7 is provided, as shown in FIG. 2 (5).

(B), (sw5 corresponding to each paper width as shown in Q)
゜sw7. By setting the switch guide part 5,
By combining the signals w 5 and sw 7, it is possible to detect each paper width and the paper in between, as shown in FIG. The paper width shown in FIG. 2 becomes smaller in the order of (5) to (q (order of A to C) in FIG. 2).

〔Effect of the invention〕

As explained above, the present invention is achieved by providing two or more switches that move in conjunction with the roller guide on the paper feed mechanism main body side that moves in conjunction with the guide on the side of the paper in the paper feed cassette. The paper width can be detected by combining the signals of each switch for a specified paper width and an intermediate paper width.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the present invention, and FIG. 2 (5) to (
q is sw5.q corresponding to the paper widths A, B, and C, respectively. sw7. FIG. 3 is a sectional view of a conventional paper width detection mechanism, and FIG. 4 is a diagram showing the relationship between the paper width and the open/closed state of the switch. 1...Paper feed cassette, 2...Paper side guide, 3...Guide section, 4...Roller guide, 5...Switch Guide part, a...
...Paper cassette insertion direction, b...Roller guide movement direction, 11...Magnet, 12...
... Paper side guide, 13 ... Hawk element.

Claims (1)

[Claims] A paper width detection mechanism, characterized in that two or more switches are linked to a roller guide that moves in conjunction with a guide on the paper side of a paper feed cassette, and the width of the paper is detected based on signals from the switches.