JPH01167123A - Paper feed cassette - Google Patents

Abstract

PURPOSE:To prevent unnecessary sensing to a photoconductive sheet, when a paper feed cassette is mounted to and removed from an insertion port of a printer or the like, by providing a moving cover, able to slide an upper cover upper surface, in a horizontal direction to the paper feed cassette insertion port of the printer or the like and arranging a front cover, provided in the bottom of the moving cover being able to open and close by its movement, in an end part of the moving cover. CONSTITUTION:When a paper feed cassette A is tried to be intruded into a suitable paper feed position, first an insertion port 10 is adapted to a moving cover 3. The moving cover 3, while an upper surface of its upper cover 2 is retracted against a coil spring 5, moves sliding. As the resulting, a notch opening part 2b is opened in an end part of the upper cover 2 of the paper feed cassette A. However, because the paper feed cassette A is inserted while moving into the insertion port 10 in accordance with retracting the moving cover 3, even when the before said opening part is formed in the paper feed cassette A, no sensitization of external light is generated in a photoconductive sheet 17. Thus the photoconductive sheet can be prevented from a trouble caused by previous sensing.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to paper feed cassettes for printers using photoconductive sheets. More specifically, the present invention relates to the structure of a paper feed cassette for storing and supplying photoconductive sheets.

(Conventional technology) A conventional paper feed cassette is illustrated in FIG.

The paper feed cassette B consists of a main body l and a top cover 12 that can be opened and closed, and a photoconductive sheet 17 is usually housed in a gap formed by the main body l and the top cover 12, and is separated from the external environment to block light. will be stored in An opening/closing lid 14 which can be freely opened and closed is provided at the front end of the upper lid 12 at a number 15. When installing Paper Feed Cera) B into the cassette insertion slot of a printer, etc., first open/close lid 1.
4 is opened using a hinge 15 to form an open portion 0 at the front end of the top cover 12, as shown in FIG. This open part O is pushed into a cassette insertion opening 10 of a printer or the like shown in FIG. 1, and is locked in the insertion opening 10. The photoconductive sheet 17 is moved and fed in the direction of the arrow as the feeding roller 18 rotates. Reference numeral 16 is a claw provided at the end of the cassette body l, which separates and supplies only one photoconductive sheet 17 that is in contact with the roller 18, which moves in the direction of the arrow as the roller 18 rotates. be.

Furthermore, insert the paper cassette B into the cassette insertion slot 10 of the printer, etc.
When removing the photoconductive sheet 17 from the photoconductive sheet 17, the paper feed cassette B is pulled out from the insertion slot 10 in the opposite manner as described above, and the opening/closing lid 14 is closed to shield the photoconductive sheet 17 from light and store it.

(Problems to be Solved by the Invention) However, with the structure of the conventional paper feed cassette, it is necessary to open and close the top cover before and after inserting and removing the paper into the insertion slot of a printer, etc., and the paper is stored in the paper feed cassette each time. There was a problem in that the photoconductive sheet was exposed to external light and became exposed.

(Means and effects for solving the problems) The present invention has the following features:
The purpose is to overcome the above-mentioned problem, and when inserting and removing the paper feed cassette into and from the insertion slot of a printer, etc., there is no need to open and close the cover, thus preventing unnecessary exposure of the photoconductive sheet to light. To provide a paper feed cassette with a configuration.

That is, a movable cover is provided that can slide on the upper surface of the top cover horizontally with the paper feed cassette insertion opening of a printer, etc., and a front cover that can be opened and closed by moving the movable cover below the movable cover is disposed at the end of the movable cover. When inserting a paper feed cassette into the insertion slot of a printer, etc., the movable cover that contacts the insertion slot is moved along the top surface of the top cover according to the insertion operation, and the front cover is rotated along with this movement. The end of the top cover is opened to allow the photoconductive sheet paper feed cassette to feed paper into the insertion slot, and to completely store the paper feed cassette into the insertion slot.

Furthermore, when removing the paper feed cassette from the insertion slot of a printer, etc., contrary to the above, the movable cover returns to its original position and closes the opening of the top cover, and at the same time the front cover rotates back and closes the top cover entrance. Close.

(Example) FIG. 1 is a perspective view illustrating the invention in detail.

The printer, etc. is on the left side when facing Figure 1, and the paper feed power is
A is inserted from the right side into an insertion opening 10 of a printer or the like indicated by a two-dot chain line. Photoconductive sheet stored in the paper feed cassette) 1? The sheets are fed one by one by a known sheet feeding roller 18 as will be described later.

Paper feeding power cella) A is main body 1, top lid 2, movable lid 3, front lid 4
It becomes more. A photoconductive sheet 17, a paper feeding roller 18, etc. are housed in the internal space formed by the upper lid 2, movable lid 3, front lid 4, and main body 1.

The roller 18 is installed on the side of the printer insertion slot lo, and the photoconductive sheet is used only when feeding paper after the paper feeding cassette is inserted.
It borders on 17. Normally, when setting the photoconductive sheet 17 in the paper feed cassette A, the upper cover 2 is removed together with the movable cover 3 and the front cover 4, and the cover is placed inside the main body 1 and returned to its original position. A notch opening 2b is formed at one end of the upper lid 2.

A movable lid 3 having an opening 3'a in one direction is provided so as to be able to freely slide substantially horizontally on the upper lid 2, and in order to perform this sliding smoothly, the following configuration is provided.゛The slide guide 7 installed across the side of the upper lid 2 has a
A guide roller 6 protruding from one side of the movement M3 is engaged so as to be movable laterally. Furthermore, a coil spring 5 is installed between the side surface of the upper lid 2 and the side surface of the movable lid 3. Further, a pair of male engagement fitting parts 8 are provided at one side end of the movable lid 3, and a pair of female engagement fitting parts 9 are provided at appropriate opposing positions on the upper cover 2. Front lid 4
One side forms a bent portion 4a. Inside this front lid 4,
A projecting portion 2a of the upper lid 2 is provided so as to be freely abuttable.

The front cover 4 is fixed to the movable cover 3 and the front cover 4 by a torsion spring 13 that is wound around a pin 11 that is inserted into and fixed to the pin 1.
When the paper feed cassette is not inserted into the insertion port 10 of a printer, etc., the overhanging portion 2a of the upper cover 2 is provided to rotate by the elastic force of the torsion spring 13. In the pressed state, the front cover 4 is in a closed position below the projecting portion 3b of the movable cover 3 as shown in FIG.

Next, the operation when loading the paper feed cassette A into the insertion slot 10 of a printer or the like will be explained. When trying to insert the paper feed cassette A into the insertion slot 10 using the upper lid 2, the width of the movable lid 3 is larger than the insertion slot IO, so it comes into contact with one side of the insertion slot IO and moves in the opposite direction to the insertion direction. Moving. The movable lid 3 resists the elasticity of the coil spring 5, and its roller 6 moves within the slide guide 7 in a direction opposite to the insertion opening. Accordingly, the front cover 4 also moves together with the movable cover 3. When the top cover 2 is inserted in the direction of the insertion port 10, the overhang 2a of the top cover 2 is adjacent to the back side of the front cover 4, that is, the top cover 2 side, so the overhang 2a of the top cover comes into contact with the inside of the front cover 4. . Accordingly, the front cover 4 is rotated by the elastic force of the torsion spring 13, and the front part of the paper feed force sensor A is opened. The front lid 4 moves together with the movable lid 3 while remaining open.

When trying to push the paper feed cassette A to an appropriate paper feed position, the insertion slot 10 first comes into contact with the movable lid 3, and the movable lid 3
slides while retreating on the upper surface of the upper cover 2 against the coil spring 5, so that a notch opening 2b is opened at the end of the upper cover 2 of the paper feed force cera)A. However, as the movable lid 3 moves backward, the paper feeder A is moved and inserted into the insertion slot 10, so even if the opening is formed by the movable lid in the paper cassette A, the photoconductive The adhesive sheet 17 is not exposed to external light.

The male engagement tool part 8 and the female engagement tool part 9, which are made of plate spring material, are installed on the end of the movable lid 3 and the upper lid 2, respectively, and when the movable lid 3 slides back, the paper feed state is reached. When they reach this point, they become engaged with each other and hold the movable lid 3 so that it does not move. Therefore, the paper feed force sensor attached to the insertion slot 10) A
However, the repulsive force of the coil spring 5 provided on the movable lid 3 can prevent the lid from jumping out in the direction of the insertion opening 10.

When attempting to remove the paper feed cassette A from the insertion slot 1O, by pushing the lever part 9a of the female part 9 of the engaging fitting, the engagement with the male part 8 of the engaging fitting is released, and the movable lid 3 is removed from its position. The front cover 4 returns to its original position by the force of the coil spring 5, and at the same time the front cover 4 moves together with the movable cover 3, and finally returns to its original position at the opening 3a of the movable cover 3, closing the end of the top cover 2. do. When the paper feed cassette A and the insertion slot 1O are disengaged, the movable lid 3 returns to its original position as described above.
closes the opening with the top lid 2. Therefore, even when the paper feed cassette is removed from the insertion slot, this can be done without exposing the photoconductive sheet 17 to external light.

(Effects of the Invention) As described above, according to the present invention, when a paper feed cassette is attached to or removed from the insertion opening of a printer, etc., the movable lid or front lid is moved in response to contact with the insertion opening of the printer, etc. Since the photoconductive sheet is configured to open and close, it can be inserted into and removed from the insertion port of a printer or the like without exposing the photoconductive sheet stored inside to external light. Therefore, it has advantages such as being able to prevent problems and adverse effects caused by prior exposure of the photoconductive sheet to external light.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the paper feed cassette of the present invention. FIG. 2 is a route map showing a state in which the movable lid has moved backward, and is an enlarged perspective view with a part of the front lid cut away. FIG. 3 is a partially exploded perspective view of the upper lid, movable lid, and front lid. FIG. 4 is a perspective view showing a conventional paper feed cassette. DESCRIPTION OF SYMBOLS 1...Paper feed cassette main body, 2...Top lid, 3...Movable cover, 2a...Protrusion part, 3a...Opening part, 4...
・Front lid, 5...Coil spring, 6...Roller,
7... Slide guide, 8... Male part of retaining tool, 9
...Female part of the retainer, 10...Insertion port, 11...
Pin, 13...Torsion spring Applicant: Copal Electronics Co., Ltd. Agent Patent attorney: Sakae Kobayashi

Claims (1)

[Scope of Claims] 1. A movable lid that is movable horizontally with respect to the insertion opening of the printer, etc. when a paper feed cassette for storing and supplying photoconductive sheets is attached to and removed from the insertion opening of the printer, etc.; and the movable lid. What is claimed is: 1. A paper feed cassette having a top cover supporting the cassette, and a front cover attached below the movable cover and capable of being opened and closed as the movable cover moves. 2. A photoconductive sheet is stored in the gap formed by the main body, the top cover, the movable cover, and the front cover, and a movable cover is provided that opens in one direction and can slide on the top cover horizontally to the insertion opening of the printer. 2. A paper feed cassette according to claim 1, wherein the movable lid is provided with a front lid that can be opened and closed as the movable lid and the upper lid move below the opening of the movable lid. 3. The paper feed cassette according to claim 2, wherein the front cover is rotatably supported by a pin fitted into the side surface of the movable cover. 4. The paper feed cassette according to claim 1, comprising a slide guide installed on the side surface of the upper lid, and a roller connected to the movable lid slidably engaged with the slide guide. 5. The paper feed cassette according to claim 4, wherein a coil spring is installed on the side surface of the upper lid and the side surface of the movable lid. 6. The paper feed cassette according to claim 1, wherein a pair of female engagement fittings are provided at the end of the movable lid, and a pair of male engagement fittings are provided at opposing positions on the upper lid. 7. The paper feed cassette according to claim 3, wherein the front cover is rotated about a pin by a torsion spring installed between the movable cover and the front cover, so that the front surface of the upper cover can be opened and closed.