JPS62211225A - Manual-combined paper feed cassette - Google Patents

Abstract

PURPOSE:To make the facilitation of expansion and contraction of a breadth regulating plate in a body and retraction and reset operations of a claw piece attainable at the time of inserting a sheet of recording paper, by connecting a rear end of an upper cover to the cassette body with a hinge, and making it possible to be fully opened toward the rear from the front in a paper feeding direction. CONSTITUTION:A rear end of a cover 2 is connected to a cassette body 1 via a hinge device, and other parts except this rear end are merely placed on a peripheral frame of the cassette body 1 with dead weight. With this constitution, since the upper cover 2 is easily opened with the hinge device 14 as a fulcrum if uplifting a feed direction front edge where elastic sheets 12 and 13 are extendedly installed, breadth regulating plates 3 and 4 inside the cassette body are expanded outward, taking out old recording paper after retracting claw pieces 9 and 10, and after inserting new recording paper, if these breadth regulating plates 3 and 4 are adjusted to the recording paper and put back inward, these claw pieces 9 and 10 are reset onto the new recording paper, so that if the upper cover 2 being opened so far is closed afterward, replacement of the recording paper is quickly completed without any trouble.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feed cassette that is attached to a paper feed section of a copying machine and serves both automatic paper feed and manual paper feed.

[Background of the invention]

In general, the paper feeding mechanism of a copying device stores recording paper stacked in a cassette body having a top lid with its upper surface open in the paper feeding direction, and the front edge side of the recording paper is placed on the bottom plate of a cassette mounting section provided in the copying device body. A push-up lever lifts the paper tray together with the paper tray and brings it into contact with the paper feed roller, so that the paper tray can be sent out toward the transfer section by the rotational force of the paper feed roller. The cassette used for this paper feeding mechanism is equipped with a claw piece inside the cassette body that can lightly support the leading edge of the recording paper, and the top cover of the cassette is used to ensure that each recording paper is fed out one by one. In order to make it possible to use it for manual insertion, there is a structure in which an elastic sheet is extended on the front edge of the top cover to cover and hide the claw pieces so that the claw pieces do not get in the way when two-handed feeding is performed. Also,
Some cassettes with this structure allow recording paper of different sizes to be replaced at any time.

However, since the top cover of the conventional cassette was fitted and fixed to the cassette body, it was troublesome to open and close it when the recording paper was frequently replaced. In order to avoid this trouble, it would be better to take out the old recording paper from the open part on the upper surface in the paper feeding direction without opening the top cover and insert the new recording paper, but the above-mentioned cassette does not have a Such a simple method could not be adopted because a claw piece was provided to support the recording paper, and an elastic sheet covering the claw piece was extended from the front edge of the top lid. Therefore, even though it is troublesome, it is necessary to remove the top cover and completely open the cassette body.

[Purpose of the invention]

This invention is intended to solve the above-mentioned problems.The top cover can be easily fully opened together with the elastic sheet, and the width regulating plate inside the cassette body can be expanded and contracted when taking out the old recording paper and inserting the new recording paper. To provide a paper feed cassette that can be used both manually and in which the evacuation and return operations of a claw and a claw piece can be performed easily.

[Structure of the invention]

In order to achieve the above object, the present invention uses the top cover of the cassette main body with its upper surface open in the paper feeding direction as a manual feed platform, and has a claw piece on the front edge of the top cover to lightly support the front edge of the recording paper stored in the cassette main body. In a manual paper feed cassette with an extending covering elastic sheet, the rear end of the upper cover is hinged to the cassette body, and is configured to be fully opened from the front to the rear in the paper feeding direction.

〔Example〕

Next, the present invention will be described based on embodiments shown in the accompanying drawings.

1 to 3 show the cassette of the present invention.

In the figure, reference numeral 1 denotes a cassette main body having an upper lid 2 with its upper surface open in the paper feeding direction, and a width regulating plate 3 on the bottom surface of the cassette main body 1 that can be moved according to the width of the recording paper R accommodated.
4 is provided, and a paper holder whose base end is pivotally connected is provided with a plate 5. The plate 5 of this paper tray is lifted by a push-up lever 7 disposed on the bottom plate of the cassette mounting section 6 of the copying machine A as shown in the fourth figure, so that the recording paper R in the cassette can come into contact with the paper feed roller 8. belongs to. 9
．． Reference numeral 10 denotes a claw piece for lightly supporting the front edge image side of the uppermost recording paper R in the cassette main body 1, and the base ends 9a and 10a of the claw pieces 9 and 1o are connected to the width regulating plate 3.4. are respectively pivoted to. The claw pieces 9 and 10 are provided to ensure that one sheet can be separated from the other when the sheet is fed out due to the friction caused by the rotation of the sheet feeding roller 8. Reference numeral 11 denotes a movable stand provided on the upper surface of the upper lid 2. The movable stand 11 is used to regulate one side edge of the manually fed sheet R' and to determine the manual feeding position according to the paper size. Reference numerals 12 and 13 denote elastic sheets extending from the lower surface of the front edge of the upper lid 2 on both sides, and the elastic sheets 12 and 13 are used to hold the manual paper R during manual feeding.
This is to cover the tips of the claws 9 and 10 so that they do not hit the claws 9 and 10. The elastic sheets 12 and 13 are opened sufficiently so that the paper feed roller 8 can come into contact with the recording paper R during automatic paper feeding, while each of the elastic sheets 12 and 13
has a width necessary to cover the moving area even when the claw pieces 9, 10 move according to the width regulating plate 3.4 which is adjusted according to the size of the recording paper stored in the cassette main body 1.

Further, it is desirable that the elastic sheets (9) and (12) and (13) be made of a material that does not generate static electricity due to friction with paper during manual feeding.

As shown in the second figure, the rear end of the upper lid 2 is connected to the cassette body 1 via a hinge means 14, and the rest of the lid 2 is simply placed on the peripheral frame of the cassette body 1 by its own weight. ing. As a result, the upper lid 2 can be easily opened using the hinge means 14 as a fulcrum by lifting the front edge in the sheet feeding direction where the elastic sheets 12 and 13 are extended.
As shown in the figure, the width regulating plates 3 and 4 inside the cassette main body are expanded outward, the claw pieces 9 and 1o are retracted, and the old recording paper is taken out, and then the old recording paper is taken out.

After inserting a new recording paper, if the width regulating plate 3.4 is returned inward to match the width of the recording paper, the claw pieces 9 and 10 will return to the top of the new recording paper, and then the top cover will open. 2, the replacement of the recording paper can be completed quickly and without trouble.

Note that the paper feed roller 8 has a half-moon shape with a part of its circumference cut out, and before paper feeding starts, the circular part 8a faces upward and the cutout part 8
b faces downward, so that a passage W for the manual paper R' can be formed between the paper R and the recording paper R lifted by the push-up lever 6 as described above, and the manual paper R' is placed in front of the passage W. shutter 14 for regulating the tip of the
is provided. This shutter 14 blocks the passage W when the paper feed roller 8 is not operating, and the paper feed roller 8 starts rotating, and the tip of the circular portion 8a in the rotation direction contacts the manual paper R' to feed the paper. Before starting, it is lifted up by the action of the cam 15 so that it can be retracted above the passage W. The paper R' thus sent out by the paper feed roller 8 is sent to the second paper feed roller 16 as shown in FIG.
The paper is fed to the transfer section at the same timing as the development section.

〔Effect of the invention〕

As described above, the present invention uses the top cover of the cassette main body with its upper surface open in the paper feeding direction as a manual feeding platform, and covers the front edge of the top cover that lightly supports the front edge of the recording paper stored in the cassette main body. This manual paper feed center with an extended elastic sheet is characterized in that the rear end of the top cover is hinged to the cassette body, so even when recording paper is frequently replaced, the top cover can be easily attached to the cassette using the hinge as a fulcrum. The cassette is easy to open and close, and can be fully opened with one touch, making it easy to extend and retract the width regulating plate inside the cassette body and to retract and return the claw pieces when removing old recording paper and inserting new recording paper. It has excellent effects.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a perspective view of the cassette body, Fig. 2 is a sectional view with the top cover slightly removed, Fig. 3 is a perspective view when replacing recording paper, and Fig. 4 is a copying machine. FIG. 1-・Cassette body 2-・Top lid 3, L-11 Width regulation temporary 5-Paper holder is plate 9.10-
・-・Claw body 12.1. ll-elastic sheet 14
- Hinge means Fig. 1 Fig. 2 Fig. 3 Fig. 4

Claims (1)

[Claims] The top cover of the cassette body with its upper surface open in the paper feeding direction serves as a manual feed platform, and an elastic sheet is extended on its front edge to cover the claw piece that lightly supports the front edge of the recording paper stored in the cassette body. What is claimed is: 1. A paper feed cassette for manual feeding, characterized in that the rear end of the upper cover is hinged to the cassette body.