JP2533603B2 - Paper cassette - Google Patents

Description

Detailed Description [Table of Contents] Outline Industrial field of application Conventional technology (Fig. 5) Problem to be solved by the invention Means for solving the problem (Fig. 1) Operation Example (a) One Description of Embodiments (FIGS. 2, 3, and 4) (b) Description of Other Embodiments Effect of the Invention [Outline] Paper is mounted on the bottom plate to regulate the positions of paper of various sizes. Regarding a paper cassette, a separation claw that engages with the leading edge of the stored paper and a bottom plate that rotates around one end with the separation pawl for the purpose of restricting the position of the paper that is smaller than the bottom plate with a restriction slider. A sheet cassette having a biasing member that biases the other end of the bottom plate toward the separation claw, and a slidable regulation slider that regulates the rear end of the sheet, and the regulation slider advances on the bottom plate. Smaller than the bottom plate provided with a notch forming a passage The rear end of the sheet, and so regulating the position in the regulating slider.

[Industrial applications]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper cassette that mounts paper on a bottom plate and regulates the positions of paper of various sizes.

Devices using cut paper are widely used in printers, copiers, facsimiles and the like.

In such a device, a paper cassette that stores cut paper is used.

In such a paper cassette, there is a demand for a paper cassette of various sizes that can be position-regulated and accommodated and that can be easily separated and taken out.

[Conventional technology]

 FIG. 5 is an explanatory diagram of a conventional technique.

The paper cassette is provided with a pair of separation claws 2a and 2b on both sides of the front end of the cassette case 1, and a bottom plate 3 rotatable about one end, and the other end of the bottom plate 3 are urged toward the separation claws 2a and 2b. It has a coil spring 5.

On the other hand, a regulation slider 4 is provided at the rear end of the cassette case and can slide along the slide guide 4a.

In such a paper cassette, the paper is mounted on the bottom plate 3 and the rear end of the paper is position-regulated by the restriction slider 4, so that the front ends of the paper are aligned with the lower parts of the separation claws 2a and 2b.

Therefore, sheets of various sizes are set with their leading ends aligned, and the sheets are pressed against the separation claws 2a and 2b by the bottom plate 3, so that the separation claws 2a and 2b can be properly taken out and separated.

[Problems to be Solved by the Invention]

By the way, the longer the bottom plate 3 is, as shown in FIG.
The pressing area of the bottom plate 3 applied to the paper by the coil spring 5 becomes large, and the inclination angle θ changes little depending on the size of the paper, and stable paper separation is possible regardless of the size of the paper.

However, since the position regulation range of the sheet, that is, the movable range of the regulation slider 4 is between the rear end of the case 1 and the bottom plate 3,
It is not possible to regulate the positions of various sizes, especially sheets smaller than the bottom plate 3.

For this purpose, the bottom plate 3 may be made smaller and configured as shown in FIG. 5 (C), but this makes the bottom plate 3 shorter,
The pressing area applied to the paper becomes small, and the inclination angle θ changes greatly depending on the size of the paper, which adversely affects the separation characteristics of the paper.

As described above, in the conventional technique, the improvement of the separation property of the paper and the position regulation of the paper of various sizes are contradictory problems.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sheet cassette that can regulate the position of a sheet smaller than the bottom plate with a regulation slider.

[Means for solving the problem]

 FIG. 1 is a principle diagram of the present invention.

The present invention, as shown in FIG. 1, includes separation claws 2a and 2b that engage with the leading edge of a sheet to be stored, a bottom plate 3 on which the sheet is mounted and which rotates about one end, and a bottom plate 3 of the bottom plate 3. The other end is the separation claw
In a paper cassette having a biasing member 5 for biasing in the directions 2a and 2b and a slidable regulation slider 4 for regulating the position of the rear end of the sheet, the bottom plate 3 is provided with a passage for the regulation slider 4. The cutout portion 3a is provided, and the rear end of the sheet smaller than the bottom plate 3 is positionally regulated by the regulation slider 4.

[Action]

According to the present invention, the bottom plate 3 is provided with the notch 3a so that the restriction slider 4 can enter the notch 3a.

Therefore, even if the paper is smaller than the bottom plate 3, the regulation slider 4
The position of the rear end can be regulated, and the sheets of various sizes can be aligned even if the bottom plate 3 is lengthened to improve the separation characteristics.

〔Example〕

(A) Description of an Embodiment FIG. 2 is an exploded view of an embodiment of the present invention, FIG. 3 is a completed structure of an embodiment of the present invention, and FIG. 4 is a top view of an embodiment of the present invention. .

In the figure, the same components as those shown in FIGS. 1 and 5 are designated by the same symbols.

The case 1 has width-direction width slide guides 1a and 1c,
A tray 1b for the coil spring 5 and a longitudinal slide guide 4a in the longitudinal direction are provided, and the longitudinal slide guide 4a is the second.
It is extended toward the front (separation claws 2a and 2b) in the figure.

The bottom plate 3 is provided with a notch 3a in the longitudinal direction, a notch 3b in the width direction, and a rotary shaft 30 at one end. The rotary shaft 30 is covered with a set member 31, and the set member 31 is fixed to the case 1. Then it becomes rotatable.

One width slider 6a is provided with a left separation claw 2a, which is guided by the width slide guide 1a of the case 1 and can slide in the width direction between the notches 3b of the bottom plate 3.

 The separating claw 2b is fixed to the case 1 as shown in the figure.

On the other hand, the other width slider 6b is guided by the width slide guide 1c of the case 1 and is slidable in the width direction.

The coil spring 5 is set in the tray 1b of the case 1,
The bottom plate 3 is set on the top.

 An upper plate 7a is provided at the tip (other end) of the bottom plate 3.

Ground terminal plates 7b and 7c are provided below the bottom plate 3,
It is connected to the bottom of the bottom plate 3 and serves as an earth terminal to the outside.

The regulation slider 4 is set on the extended slide guide 4a of the case 1.

In this way, when the respective parts are attached to the case 1, the result is as shown in FIG. 3, and the lower roller 8 is further provided at the tip of the case 1.

Therefore, the bottom plate 3 is rotatable about the rotation shaft 30,
The coil spring 5 biases the separating claws 2a and 2b.

On the other hand, the regulation slider 4 is a slide guide for the case 1.
The cutout 3a of the bottom plate 3 can be penetrated by the 4a.

Further, the pair of width sliders 6a and 6b can be slid in the width direction by the width slide guides 1a and 1c and further by the notch 3b of the bottom plate 3 to regulate the position of the paper in the width direction.

Since the separation claw 2a is connected to the width slider 6a, the separation claw 2a also moves according to the position regulation of the width slider 6a in the width direction.

With this configuration, as shown in FIG. 4 (A), the movable range of the regulation slider 4 is extended in the longitudinal direction and can penetrate into the bottom plate 3. The edge position can be regulated and the paper can be conveyed.

As a result, it is possible to handle various paper sizes in a limited space.

Further, as shown in FIG. 4 (B), the width sliders 6a and 6b can regulate the width position of the paper smaller in the width direction than the bottom plate 3, and the separation claw 2a also moves, so that the paper can be conveyed. .

This makes it possible to handle a wider variety of paper sizes.

For the left-right balance regulation of the separation claws 2a and 2b, see the bottom plate 3
Since it is a rigid body, it is difficult to balance it, but due to the notch, the pressure of the coil spring 5 causes the bottom plate 3 to bend, which balances the pressure applied to the separation claws 2a and 2b.
Skew and jam can be prevented.

In this way, even if the bottom plate 3 is lengthened, the rear end position of the paper that is shorter than the bottom plate 3 in the longitudinal direction can be regulated, and the change in the inclination angle of the bottom plate 3 due to the amount of the paper can be reduced to ensure stable separation and conveyance. Can handle paper of various sizes.

(B) Description of Other Embodiments In the above embodiments, the slider in the width direction is provided, but it may not be provided depending on the paper to be handled, and the biasing means has been described as the coil spring. It may be by spring means.

Although the present invention has been described with reference to the embodiments, the present invention can be variously modified according to the gist of the present invention, and these modifications are not excluded from the present invention.

〔The invention's effect〕

As described above, according to the present invention, the position of the paper smaller than the bottom plate can be regulated, so that the length of the bottom plate can be increased.
The change in the inclination angle depending on the size of the paper is small, and the effect of being able to reliably separate and convey the paper, as well as the effect of being able to handle paper of various sizes, can effectively use various sizes of paper in the limited space of the paper cassette. .

[Brief description of drawings]

FIG. 1 is a principle view of the present invention, FIG. 2 is an exploded view of an embodiment of the present invention, FIG. 3 is a completed view of an embodiment of the present invention, and FIG. 4 is a top view of an embodiment of the present invention. FIG. 5 is an explanatory diagram of the conventional technique. In the figure, 1 ... Cassette case, 2a, 2b ... Separation claw, 3 ...
… Bottom plate, 3a… Notch, 4… Restriction slider, 5…
... Coil spring (biasing member).

Claims (1)

(57) [Claims] 1. A case (1) for accommodating a sheet, and separation claws (2a, 2b) engaging with the leading edge of the sheet accommodated.
A bottom plate (3) which is provided inside the case (1) and on which the paper is mounted and which rotates around one end, and the other end of the bottom plate (3) in the direction of the separation claws (2a, 2b). A paper cassette having a urging member (5) for urging and a slidable restricting slider (4) for restricting the rear end of the paper is provided in the case (1), and the restricting slider (4). Slide guide (4a) which is formed to extend in the direction of the bottom plate (3) while forming a guide for sliding movement of the
The slide guide (4a), which is provided on the bottom plate (3) and is arranged in the same line as the slide guide (4a) so that the rear end of the paper smaller than the bottom plate (3) is regulated by the regulation slider (4). A paper cassette having a cutout portion (3a) forming a passage for a regulation slider (4).