JPH0432423A - Paper feeding device - Google Patents

Abstract

PURPOSE:To achieve vertical and lateral feed by a single cassette by bending rectangular papers by 180 deg. at the main surface to face the longer sides with the shorter sides of the papers almost in parallel, and providing a pressurizing means on the inner side of the paper, and a pair of an upper and a lower supply rollers on the outer side. CONSTITUTION:A plurality of rectangular papers 1 laminated on each other are bent by 180 deg. toward a supply direction F to put the shorter sides AB almost in parallel to the longer sides AC, and they are put between a pressurizing member 4 and a holding member 5. The papers 1 are positioned by bent members 5a, 5b of the holding member 5, and the papers 1 are held by an upper and a lower supply rollers 2, 3 and the pressurizing member 4. For vertical feed, the upper supply roller 2 is rotated for a predetermined number of times in the direction of an arrow, and supplies the first paper 1. The lower supply roller 3 rotates following the paper 1, and after the first paper passes, it stops the next paper for preventing feeding more than two papers together. For lateral feed, the lower supply roller 3 rotates in the direction of an arrow, and the upper supply roller 2 rotates following the papers 1. Both vertical and lateral feed can thus be achieved by a single cassette, and the number of necessary cassettes can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cut sheet feeding device that is applied to copying machines, facsimile machines, printers, printing machines, and the like.

[Conventional technology]

In general, a copying machine is equipped with two paper cassettes for storing cut sheets: a cassette that feeds in the short direction (horizontal feed) and a cassette that feeds in the longitudinal direction (vertical feed).

This means that horizontal feeding is convenient for increasing the number of copies per unit time, but on the other hand, for example, from A3 size to A4
This is because vertical feeding is convenient for reducing size copies.

[Problem to be solved by the invention]

However, in the above conventional technology, even one size of paper has horizontal feeding and vertical feeding, so it is necessary to prepare dedicated paper cassettes for each, which increases cost and sets cassettes for horizontal feeding and vertical feeding. Then, a cassette of this size alone occupies the space of two stages, resulting in an increase in the size of the apparatus. Another drawback is that a large space is required to store the paper cassette outside the machine.

Furthermore, since there are horizontal and vertical feeds even for the same size,
Each time, the dedicated cassette had to be replaced as necessary, which caused the problem of requiring time and effort to operate.

The object of the present invention is to provide longitudinal feeding with one paper cassette;
An object of the present invention is to provide a paper feeding device capable of feeding paper in both transverse directions.

[Means to solve the problem]

The above object is to provide a holding means for bending and holding a sheet of paper by about 180 layers relative to its main surface so that the long and short edges of the sheet face each other in parallel with each other in the downstream direction in the sheet feeding direction; Located on the downstream side of each edge and longitudinal edge, the paper is
This is achieved by a first means comprising a longitudinal sheet feeding means and a transverse sheet feeding means that feed sheets sheet by sheet, and a pressure means that applies sheet feeding pressure to both of the sheet feeding means.

The above-mentioned object also provides a holding means for bending and holding the paper by approximately 180 coal seams with respect to the main surface so that the long and short edges of the paper face each other in parallel with each other in the downstream direction in the paper feeding direction; It is located inside the hand edge and the longitudinal edge, and by rotating forward and backward, the paper can be selectively fed from either the longitudinal edge or the short edge while applying paper feeding pressure to the paper with the holding means. This can also be achieved by a second means comprising a paper feeding means for feeding paper one by one.

Further, the above object can be achieved by providing, in addition to the second means, a pressing means for urging the paper toward the paper feeding means during paper feeding.

[Effect]

According to the first means, the longitudinal paper feeding means is in contact with the outer surface of the short end of the bent paper, and the paper is fed in the longitudinal direction by driving the longitudinal paper feeding means. On the other hand, the transverse direction paper feeding means is in contact with the outer surface of the longitudinal end of the sheet, and the paper is fed in the transverse direction by this transverse direction paper feeding means.

Further, according to the second means, the paper feeding means provided inside the transverse edge and the longitudinal edge of the paper can be rotated in forward and reverse directions to feed the paper in the longitudinal direction and the transverse direction. I do.

〔Example〕

Hereinafter, each embodiment of the present invention will be described based on the drawings.

1 and 2 relate to the first embodiment, where FIG. 1 is a perspective view of a main part of a paper feeding device, and FIG. 2 is a configuration diagram of FIG. 1 viewed from the front direction.

In the figure, 1 is the paper, 2 is the top paper roller (longitudinal paper feeding means), 3 is the bottom picture paper roller (transverse direction paper feeding means), and 4
5 is a pressure member (pressure means), and 5 is a holding member (holding means).

The holding member 5 has upper and lower contact pieces that grip the paper 1, and a U-shaped pressure member 4 is provided inside the holding member 5, and the paper 1 is held between the two.

A plurality of stacked sheets of paper 1 are inserted between the pressure member 4 and the holding member 5 at one corner (A in FIG. 1).
It is curved to form a bending line of about 45 degrees with the starting point (indicated by ) as a starting point, and the curved free ends (indicated by B and C in FIG. 1) are held substantially parallel. In FIG. 1, the positions of the free ends B and C of the paper 1 are determined by the two folded parts 5a and 5b on the front side of the holding member 50.

The feeding direction of paper 1 is the direction shown by arrow F, and the lead edge (A-B) located at the top in the figure is on the short end side of paper 1, that is, when viewed in the feeding direction, it is on the vertical feeding side, and the The lead edge (AC) located on the side becomes the longitudinal end side of the paper 1, that is, the lateral feed side when viewed in the feeding direction.

The paper 1 is pinched between the top paper roller 2 and the upper surface of the pressure member 4, and the paper 1 is pinched between the bottom picture paper roller 3 and the pressure member 4 to apply paper feeding pressure. It will be done.

First, vertical feeding (longitudinal direction feeding) will be explained.

Based on the paper feed start signal, the overprint paper roller 2 rotates in the direction of the arrow (clockwise) in FIG. 2 by a predetermined number of rotations.

At this time, the sketch paper roller 3 rotates with the paper l while applying rotational resistance to the paper l.

For example, a friction member is interposed between the drive shaft of the lower paper feed roller 3 and the lower paper feed roller 3, so that friction torque acts on the counterclockwise rotation of the lower paper feed roller 3. In this way, after the first sheet of paper 1 to be fed passes the lower paper feed roller 3, the next sheet of paper 1 is held back, which helps to prevent "multiple sheet feeding."

The reference for the paper 1 can be set as a one-sided reference with the paper edge A as the reference by setting the position of the free end B to a predetermined position, that is, by setting the folding position of the holding member 5 to a predetermined position. Alternatively, the center of the paper 1 can be set as a central reference that is always kept constant.

In the case of lateral feed (transverse direction feed), all of the above operations are reversed. In other words, the lower paper feed roller 3
rotates a predetermined number of rotations in the direction of the arrow in FIG. 2 (counterclockwise). At this time, the upper paper feed roller 2 rotates with the paper 1 while applying rotational resistance to the paper 1. Upper paper feed roller 2
is configured so that friction torque acts on rotation in the counterclockwise direction, which is completely opposite to that of the lower paper feed roller 3.

In this way, the upper paper feed roller 2 and the lower paper feed roller 3 function as paper feed rollers when feeding their own paper, and when feeding one of them, they can perform "multi-sheet feeding" by feeding the second and subsequent sheets together. It has the function of preventing

3 and 4 relate to the second embodiment, FIG. 3 is a perspective view of the main part of the paper feeding device, and FIG. 4 is the 1. It is a block diagram seen from the direction. In this embodiment, parts that are the same as or can be considered to be the same as those in the first embodiment are given the same reference numerals, and redundant explanation will be omitted.

In this embodiment, paper feed pressure application parts 5c and 5d are provided at the tips of the upper and lower contact pieces of the holding member 5, and inside the paper feeding pressure application parts 5c and 5d, a half-moon-shaped cross-section is provided with the outer periphery cut out so that the cross-sectional angle of view is 180 degrees or less. A paper feeding roller (paper feeding means) 6 is arranged. In addition, 7
is the drive shaft of this paper feed roller 6.

First, vertical feed (transverse direction feed) will be explained.

Based on the paper feed start signal, first, the paper feed pressure applying portion 5d is bent upward (FIG. 4). Next, the paper feed roller 6 rotates clockwise in FIG. 4 by a predetermined number of revolutions to feed only one sheet of paper 1.

The reference for the paper 1 can be set as a one-sided reference with the paper edge A as the reference by setting the position of the free end B to a predetermined position, that is, by setting the folding position of the holding member 5 to a predetermined position. You can also use it as a central reference that always keeps the center of the paper constant.

In the case of lateral feed (longitudinal feed), the above operations are all reversed. That is, in response to the paper feed start signal, the paper feed pressure applying section 5C first bends downward. At this time, the paper feed roller 6 rotates counterclockwise by a predetermined number of rotations to feed only one sheet of paper.

The feeding position of the paper 1 with respect to the paper feed roller 6 is such that the paper 1 does not come into contact even if the outer periphery of the roller rotates, as shown in FIG. Therefore, in this embodiment, the paper 1 is sent out only by the nipping pressure feeding between the paper feed roller 6 and the paper feed pressure applying section 5C or 5d. The paper feed roller 6 is rotated forward and backward by a drive # (not shown) connected to a drive shaft 7, and either upper stage paper feeding or lower stage paper feeding is selected. The displacement operation of the paper feeding pressure application sections 5c and 5d prior to this operation may also be performed by this drive source. In this case, control is performed so that the rotation operation follows the displacement operation.

〔Effect of the invention〕

As explained above, according to the inventions recited in claims 1 and 3, since it is possible to feed paper vertically and horizontally with one paper cassette, the number of paper cassettes can be reduced.
The paper cassette can be accommodated in a small space, and the paper cassette can be easily attached and detached from the machine, thereby reducing the need for the attachment and detachment operation.

Further, according to the invention as set forth in claim 2, in addition to the above-mentioned effects, it is possible to simplify the structure of the paper feeding means and reduce costs.

[Brief explanation of drawings]

1 and 2 relate to a first embodiment of the present invention, in which FIG. 1 is a perspective view of the main parts of a paper feeding device, FIG. 3 and 4 relate to a second embodiment of the present invention, FIG. 3 is a perspective view of a main part of a paper feeding device, and FIG. 4 is a configuration diagram of FIG. 3 viewed from the front direction.

Claims (3)

[Claims] (1) Place the paper approximately 1 inch from the main surface so that the long and short edges of the paper face each other parallel to each other when facing downstream in the paper feeding direction.
a holding means that is bent at 80 degrees and held; a longitudinal paper feeding means and a transverse paper feeding means that are located on the downstream side of the short edge and the longitudinal edge and feed the paper one sheet at a time; ,
A paper feeding device comprising: a pressure means for applying paper feeding pressure to both of the paper feeding means. (2) Place the paper approximately 1 inch from the main surface so that the long and short edges of the paper face each other parallel to each other in the downstream direction of the paper feeding direction.
A holding means that holds the paper by bending it by 80 degrees, and a holding means that is located inside the short edge and the long edge and rotates forward and backward, apply paper feeding pressure to the paper and hold the paper at the long edge of the paper. A paper feeding device comprising a paper feeding means for selectively feeding one sheet from either the side or the short side. (3) The paper feeding device according to claim 2, further comprising a pressure means for urging the paper toward the paper feeding means during paper feeding.