JPS628046Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a paper cassette used for feeding paper into a copying machine, and is capable of easily adapting to accommodate paper of different sizes and smoothly feeding the paper into the copying machine. This provides a one-size-fits-all paper cassette.

Conventional copying machine paper cassettes have fixed left and right side plates and a rear presser plate that match the size of the paper, so a cassette must be prepared for each paper size, and non-standard sized paper cannot be smoothly loaded using the cassette. There was a problem in that paper could not be fed properly.
In addition, conventional cassettes have a structure in which the paper loading plate is attached to the outer frame via a hinge at the rear end so that it can swing, but with this structure, the weight change due to the difference in size of paper varies. This causes a change in the rotational moment of the paper loading plate, and when the paper loading plate is pulled up with a spring or weight, the contact pressure that brings the paper into contact with the delivery roll changes, making it necessary to adjust the contact pressure. The problem also arises.

The cassette of the present invention can accurately position and store paper within a predetermined size range, even if it is a non-standard size, so smooth paper feeding using the cassette is possible regardless of the size of the paper. It becomes possible without
Since it is a one-size-fits-all cassette, there is no need to prepare it for each size, and even if the paper size differs, there is little change in the rotational moment of the paper placement plate, so there is no need to adjust the contact pressure to the delivery roll. It has the following excellent features.

The present invention consists of an outer stile, left and right side plates for regulating both sides of the paper with paper upper surface presser claws provided on the outer stile so that at least one side can move according to the width of the paper, and a plate that can move back and forth depending on the length of the paper. It has a rear presser plate provided on the outer stile for regulating the trailing edge of the paper, and a notch that allows movement of the left and right side plates and the rear presser plate, and is closer to the center of the front than the most advanced position of the rear presser plate. A free-size paper cassette for a copying machine is characterized by a structure consisting of a paper mounting plate provided on the outer sill so that the front end can be pivoted on a fulcrum provided on the outer stile and rotated upwardly, and further includes a paper cassette on the left and right side plates. This is a one-size-fits-all paper cassette whose width is adjusted by a pinion provided on the outer frame that engages with racks provided on the left and right side plates.

Hereinafter, the present invention will be explained based on the drawings.

FIG. 1 is a plan view showing one embodiment of the present invention, and FIG. 2 is a sectional view taken along line A-A in FIG. A paper placement plate 3 is swingably attached to the inside of the outer frame 1 by a hinge 2, and the front part of the paper placement plate 3 is supported by a spring or a weight (not shown) to support the paper of the copying machine. It is biased to come into contact with the delivery roll 4. The left and right side plates 5 and 5', which are adjustable in width and regulate the horizontal position of the paper on the paper loading board, are equipped with presser claws 6 and 6' that press down on the top surface of the front corner of the paper. To adjust the width of 5 and 5', the respective racks 7 and 7' engage with a pinion 8 rotatably attached to the bottom plate of the outer stile 1, so turn the lock knob 9 provided on one side plate to lock it. By removing the side plates, moving the side plates from side to side, and locking them again, the width can be set by moving both side plates symmetrically.
Reference numerals 10 and 10' indicate notches provided in the paper placement plate 3 so that the left and right plates can be moved. There is also a notch 1 on the paper mounting plate for attaching the hinge 2 to the outer frame.
1. A notch 12 is provided that allows the rear presser plate to move when it is attached to the outer stile. As shown in the figure, a rear presser plate 13 is attached to the bottom plate of the outer stile 1 so that its position can be adjusted. The rear presser plate 13 is unlocked by turning the lock knob 14 in the same way as the side plates, and moved along the slide hole to receive the front edge of the paper on the presser claws 6, 6' of the rear presser plate and the left and right side plates. By regulating the length of the paper between the hanging portion and locking the lock knob 14 again, the position of the paper on the placement plate is completely regulated. By attaching the rear presser plate 13 to the outer stile in this way, the rocking torque of the paper placement plate will not change even if the position is moved, and the overlapping thickness of the paper will decrease, causing the paper placement plate to tilt. Accordingly, the rear presser plate 13 pushes out the upper paper so as to shift it relative to the lower paper, making it easier for the delivery roll 4 to feed out one sheet at a time.

Regarding the drawings, 15 is a stopper guide that allows the rack parts of the left and right side plates to move in close contact with the bottom plate of the outer stile, 16 is a slide hole in the rack part, 17 is a shaft screw of the pinion, and 18 is a stopper guide on the bottom plate of the outer stile. The provided slide hole 19 in the side plate is also a slide hole in the rear holding plate.

In the present invention, the hinge of the paper placement plate 3 is not provided at the rear end as shown in FIG. 3 in the conventional case, but is provided closer to the center as shown in FIG. 2 or FIG. As the paper bends and comes out backwards from the hinge, the rotational torque that presses the paper placement plate against the delivery roll 4 increases, contrary to the conventional method.
The advantage is that there is no need to consider making the pressure-welding spring or weight work strongly as in the past.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. FIG. 4 is a side view showing the hinge position of the present invention. 1...Outer frame, 2...Hinge, 3...Paper mounting board,
4...Feeding roll, 5, 5'...Left and right side plates, 6, 6'...Press claw, 7,7'...Rack, 8
... Pinion, 9, 14 ... Lock knob, 13
... Rear presser plate.

Claims (1)

[Scope of utility model registration request] an outer stile, at least one of which is provided on the outer stile so that it can be moved according to the width of the paper, and left and right side plates for regulating both sides of the paper with paper upper surface presser claws; A rear presser plate for regulating the trailing edge of the paper provided,
It has a notch that allows movement of the left and right side plates and the rear holding plate, and is pivoted at a fulcrum provided on the outer stile near the center of the front of the most advanced position of the rear holding plate, so that the front end can be rotated upwardly. A one-size-fits-all paper cassette for a copying machine, characterized by a structure consisting of a paper mounting plate provided on an outer sill so as to be able to hold the paper.