JPS62136445A - Sheet feed cassette - Google Patents

Abstract

PURPOSE:To provide automated continuous supply of even small-format recording sheets in a greater quantity to a recorder by installing removably distributing pawls at the frame of a sheet feed cassette having a receptacle plate for recording sheets, and thereby enabling separation and feed of recording sheets of different sizes. CONSTITUTION:A reference plate 43 and rear end stopper 45 of this sheet feed cassette 30 are installed by fixing members S of snap type, which are mounted with practicability of iterative removals, wherein part of the reference plate 43 protrudes up through a square hole opened in a receptacle plate 32, and one of the side faces contacts small recording sheets with B6 format in cooperation with the side face of said rear end stopper 45 to allow the front edge face of the recording sheets to be in contact with distributing pawls 34, 44 so as to provide restraint to the carry-out position. Because the reference plate 43 is mounted by the above-mentioned fixing member S upon being held in parallel with another reference plate 33 by a guide pin, recording sheets of other minor sizes than B6 format can be used by determining the installation position together with the rear end stopper 45, and it is also practicable for one sheet feed cassette to accommodate recording sheets of two or more different minor sizes.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feed cassette that accommodates a large number of sheets of recording paper and is used by being attached to an image recording apparatus.

[Conventional technology]

Image recording devices used for office purposes often make continuous copies of originals of the same size. A method is used in which the paper is stored in a paper cassette and attached to the apparatus, and one sheet is delivered and supplied in accordance with the copying process.

Once installed, this paper feed cassette is extremely convenient because it can automatically feed recording paper continuously in conjunction with the operation of the recording device, and it is also very convenient because it quickly supplies recording paper in accordance with the copy cycle. It is also widely used due to its efficiency.

[Problem that the invention seeks to solve]

However, these paper feed cassettes are prepared according to the size of the recording paper, and the sizes are generally the most frequently used 84 size, A4 size, and at least 85 size. It is available for large size recording paper, but is not available for smaller size recording paper such as 86 size and A6 size recording paper.
Therefore, when copying using such small-sized recording paper, it is necessary to manually feed one sheet of paper, which is extremely inefficient.

As a result of solving this problem and improving the present invention, it is now possible to automatically feed a large number of sheets of recording paper to a recording device in succession, in the same way as the dog-sized recording paper mentioned above. The purpose is to provide the best possible paper feeding capacity.

[Means for solving problems]

The above purpose is to provide a removable paper feeder to a paper feeder 1 for recording paper, which has paper cutting claws on both sides of the frame and a receiving plate on which the paper is pushed up by a lifting lever provided on the recording device. This is achieved by a paper feed cassette characterized in that a claw is attached to the frame so that recording paper of different sizes can be separated and fed.

〔Example〕

An embodiment of the present invention is shown in FIG.

Prior to describing the embodiment, the functions of a paper feed cassette for dog-sized recording paper, such as A4 size paper, will be explained with reference to the sectional view shown in FIG.

When the paper feed cassette 10 containing a large number of stacked sheets of recording paper P is attached and set in the cassette loading section of the recording device 20, the lifting lever 21 provided on the recording device side moves counterclockwise around the shaft 21a as a fulcrum. When activated, the receiving plate 12 is pushed up through the window 11a at the bottom of the frame 11 of the paper feed cassette 10, rotated counterclockwise around its end 12a as a fulcrum, and then tilted.

As a result, the uppermost surface of the recording paper P placed on the receiving plate 12 comes into pressure contact with the feeding roller n of the recording device with an appropriate pressing force to prepare for the feeding of the uppermost recording paper P. There is.

On the other hand, a pair of symmetrical reference plates 13 are provided on the left and right inner surfaces of the frame 11 to make the width of the stored recording paper P uniform.
A pair of separating claws 14 are attached symmetrically to each other and can freely rotate about the upper shaft 13a as a fulcrum.

The separating claw 14 includes a flat portion 14a that presses down the left and right corners of the stacked recording sheets P by its own weight, and a rising portion 14b on which the front end surface of the recording sheets P comes into contact. The height of the recording paper P is movable according to the amount of recording paper P housed together with a trailing end stopper 15 that regulates the trailing end surface.
It acts to regulate the transport position.

Further, when the feeding roller n starts to rotate counterclockwise due to the start of conveyance of the recording paper P, the flat part 14a of the sorting claw 14 uses the frictional force to move only one uppermost recording paper P to the lower one. The effect of separating from the recording paper P in
It also has a so-called judgment effect.

The present invention utilizes the functions of the paper feed cassette for large-sized recording paper as is, and furthermore, it is possible to replace and store small-sized recording paper and supply it to the recording device.
An example of a paper feed cassette that can be used for both small and small sizes is shown in FIG.

The paper feed cassette 30 of the present invention includes a reference plate 33 and a separating claw 34 fixedly attached to the left and right inner surfaces of the frame 31 for recording paper of large size, for example, 84 size. The reference plate 43 has a removable and rotatable cutting claw 44 attached thereto, and the receiving plate 32 has a rear end stopper 35 fixed to the bottom inner surface of the frame 31 for 84-size recording paper. A removable rear end stopper 45 is provided on the upper surface of the rear end stopper 45.

When the reference plate 43 and rear end stopper 45 are respectively attached by snap-type fixing members S that can be repeatedly attached and detached, a part of the reference plate 43 protrudes upward through the square hole opened in the receiving plate 32. The side surface thereof, together with the reference plate and the side surface of the newly attached rear end stopper 45, is brought into contact with a recording paper of a desired small size, for example, 86 size, and the front end surface of the recording paper is brought into contact with the cutting claw fitting and 44. It is designed to be regulated at the unloading position.

Note that the reference plate 43 is held parallel to the reference plate 33 in advance by a guide pin (not shown) and then attached by the fixing member S, and the rear end stopper 45
In addition to 86 format, it is also possible to accommodate various types of small-sized recording paper by setting the respective mounting positions, and it is also possible to accommodate multiple types of small-sized recording paper in one paper feed cassette. It becomes possible.

Furthermore, in this embodiment, a paper feed cassette that carries out the recording paper with reference to one side has been described, but for a paper feed cassette that carries out the recording paper with its center base, the above-mentioned separating claw 44 may be used. By preparing a pair of symmetrical reference plates 33 and attaching them at symmetrical positions with respect to the center line of the paper feed cassette, it is also possible to accommodate and transport various small-sized recording papers as in the previous example.

〔Effect of the invention〕

According to the present invention, it is possible to use a feeding force cent for dog-sized recording paper, which has conventionally been commonly used, as a means of feeding small-sized recording paper to a recording device, and as a result, it is possible to use a feeding force cent for dog-sized recording paper, which has conventionally been carried out only by manual feeding. Paper feeding power cents for both large and small sizes, which can rapidly and continuously feed a large number of sheets of recording paper of various sizes, such as small sizes, have now been provided.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the paper feed cassette of the present invention. Figure 2 is a cross-sectional view of a conventional paper feeding force centrifuge. 30... Paper feed cassette 31... Frame 32... Receiving plate 43... Reference plate 44... Judging claw
45-1. Rear end stopper S...Fixing member

Claims (2)

[Claims] (1) A paper feed cassette for recording paper that has a separating claw on both sides of the frame and a receiving plate on which the recording paper is pushed up by a lifting lever provided on the recording device has a removable separating claw attached to the frame. A paper feed cassette that is attached to the body and is capable of separating and feeding recording paper of different sizes. (2) Paper feeding according to claim 1, characterized in that small-sized recording paper is separated and fed by the separating claw on one reference side of the frame and the removable separating claw. cassette.