JPH09255185A - Paper sheet cassette device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper sheet cassette device having a means for automatically detecting the amount of paper sheets. SOLUTION: During printing, an arm 4 is lowered by a spring 9, a first of paper sheets 2 of a cassette 2 is sent by a roller 5 and by detecting the angle of the lowered arm 4, the remaining amount of the paper sheets 1 is detected. Thus, following the lowering of the arm 4, a large gear 6 is rotated and a small gear 5 is also rotated, a slit 51 is also rotated by the rotation of this small gear 5, pulses are counted by a light receiving element 7, the degree of lowering of the arm 4 angle from its home position is set according to the pulse count and since the arm 4 is lowered for each reduction of the paper sheets 1 in the cassette 2, the remaining amount of the paper sheets 1 is detected and the detected result is displayed by a displaying means 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper cassette device, and more particularly to a paper cassette device provided with means for simply detecting the remaining amount of paper in the cassette.

[0002]

2. Description of the Related Art As shown in FIG. 2, a conventional paper cassette device does not have a remaining paper amount detecting means, and when the user mounts the paper 1 in the cassette 2, the number of papers is counted and mounted in advance. In this method, the number of sheets of paper 1 used is displayed on the display means during printing.

In this method, the user has to count the number of sheets of paper 1, and when the cassette 2 is replaced (from plain paper to postcard), the number on the display means is reset to count the number of sheets of paper 1. It was necessary to check the remaining amount of the paper 1 in the cassette 2.

[0004]

As described above, in the conventional paper cassette device, in order to know how much remaining paper is in the cassette, the paper in the cassette is counted in advance or the cassette is opened. I had no choice but to look into it.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a paper cassette device which automatically detects the remaining amount of paper without counting the paper in advance and confirming it by opening the cassette.

[0006]

In order to solve the above-mentioned problems, a paper cassette device of the present invention comprises a paper sheet, a feed roller arranged above the cassette for storing the paper sheet, and a feed roller for feeding the paper sheet. An arm having a feed roller attached to one end thereof, a large gear attached to the other end of the arm, a small gear provided with a slit interlocking with the large gear, and the arm tilting based on the remaining amount of the sheet. Thus, it is configured by a light receiving element that counts pulses in the slit when the large gear and the small gear rotate, and a display unit that displays the remaining amount of the paper by the pulses counted by the light receiving element. And

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a paper cassette device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram (A) and a detailed diagram (B) of a sheet cassette device according to an embodiment of the present invention.

As shown in FIG. 1, a sheet cassette device according to an embodiment of the present invention includes a sheet 1 and a feed roller 3 which is arranged above a cassette 2 for storing the sheet 1 and which feeds the sheet 1. An arm 4 having the feed roller 3 attached to one end, and a large gear 6 attached to the other end of the arm 4.
When the large gear 6 and the small gear 5 rotate, the small gear 5 having the slit 51 interlocking with the large gear 6 and the arm 4 tilting based on the remaining amount of the sheet 1 cause the slit 5 to rotate when the large gear 6 and the small gear 5 rotate.
A light receiving element 7 that counts pulses with 1, and this light receiving element 7
And the display means 8 for displaying the remaining amount of the paper 1 by the pulse counted in.

Next, the operation of the paper cassette device according to the embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1A, the operation of the sheet cassette device according to the embodiment of the present invention is such that the arm 4 is lowered by the spring 9 during printing and the sheet 1 in the cassette 2 is moved.
The first sheet is fed by the feed roller 5, and the remaining amount of the sheet 1 is detected by detecting the angle at which the arm 4 is lowered, as shown in FIG.

The detection of the remaining amount of the sheet 1 will be described in detail. As shown in FIG. 1B, the large gear 6 is fixed to the arm 4 and meshes with the small gear 5, and the small gear 5 has a slit. 51 is attached, and is fixed to a frame or the like separately from the arm 4 together with the light receiving element 7.

Therefore, as the arm 4 descends, the large gear 6
And the small gear 5 also rotates, and by rotating the small gear 5, the slit 51 also rotates, and the light receiving element 7 counts the pulses. When the number of pulses is, the angle of the arm 4 is from the home position. The arm 4 is lowered by setting how many times the paper has been lowered, and the paper 1 in the cassette 2 is reduced.
, And the user can detect the remaining amount of paper at a glance.

If the ratio of the large gear 6 and the small gear 5 is increased or the number of slits 51 is increased, the arm 4 is increased.
Since the remaining amount can be detected even with a small movement of, the remaining amount can be set in several steps.

However, since the thickness of the paper differs depending on the type of paper (plain paper, postcard, thermal paper), it is very difficult to detect the remaining amount of each paper. Become.

[0016]

As described above, according to the paper cassette device of the present invention, the remaining amount of paper in the cassette is simply and automatically displayed on the display means, and the user can easily see the remaining amount of paper in the cassette. There is a detectable effect.

[Brief description of drawings]

FIG. 1 is a configuration diagram (A) and a detailed diagram (B) of a sheet cassette device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a conventional paper cassette device.

[Explanation of symbols]

 1 Paper 2 Cassette 3 Feed Roller 4 Arm 5 Small Gear 6 Large Gear 7 Light-Receiving Element 8 Display Means 9 Arm (Spring) 51 Slit

Claims (1)

[Claims] 1. A paper sheet, a feed roller for arranging the paper sheet at an upper portion of a cassette for feeding the paper sheet, feeding the paper sheet, an arm having the feed roller attached to one end, and a large roller attached to the other end of the arm. A gear, a small gear provided with a slit interlocking with the large gear, and a light-receiving element that counts pulses in the slit when the large gear and the small gear rotate by tilting the arm based on the remaining amount of the paper. And a display unit for displaying the remaining amount of the above-mentioned sheet by the pulse counted by the light receiving element.