JPH0336748B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying apparatus in which a bend in a sheet feeding unit during installation can be easily corrected.

[Conventional technology]

Modern copying machines are equipped with paper feed units that can accommodate multiple paper feed cassettes in order to easily switch between paper sizes of different sizes. However, in the case of such a paper feeding unit, the path of paper sent from the upper cassette at the first paper feeding section to the second paper feeding section (register roller) is longer than the path of the paper pulled out from the lower cassette. Therefore, there is a high possibility of jamming in the paper path, and unlike when the paper path is short, the trailing edge of the jammed paper does not remain outside the first paper feed section, and the cassette must be removed to take out the paper. In many cases, this is not possible.

Conventionally, in order to remove jammed paper from a paper path that communicates with an upper cassette, the outer plate of the paper path is divided into upper and lower halves so that the lower plate can be opened, and the paper feed unit is moved from the paper feed position to the non-paper feed position. It is known that the device is installed so that it can be pulled out to the desired position. Making the paper feed unit pull-out type was advantageous in that the user could easily take out the jammed paper, but there was a risk that the paper feeding position of the paper feed unit would change each time the paper was pulled out. A means for regulating the running direction of the paper unit was required. Conventionally, as this regulating means, two guide members circumscribing both side plates of the paper feeding unit were directly fixed to the bottom plate of the main body of the apparatus itself on which the paper feeding unit runs. Therefore, at the manufacturing and adjustment stages of the device,
In order to correct paper bending or deviation, it is not possible to adjust only one of the two guide members (when adjusting one, the other must also be adjusted), and the correct position cannot be determined at once. There was a problem.

In addition, Japanese Patent Laid-Open No. 57-178262 discloses a device that handles a large number of sheets and has a base on which the sheets can be placed and a guide member that regulates the direction in which the sheets are placed.
It is known from the publication No. However, this measure has the disadvantage that the position of the guide member cannot be adjusted unless the base is removed from the vessel.

[Purpose and structure of the invention]

The present invention is intended to solve the above-mentioned problems, and includes a paper feeding unit including a paper feeding means, a means for forming a path for paper fed by the paper feeding means, and a paper feeding unit that includes the paper feeding unit. A telescoping rail that is supported in a drawable manner so as to be movable between a paper feeding position and a non-paper feeding position, a support plate that fixes and supports the base end of the telescoping rail, and a main body bottom plate that supports the support plate. and means for rotatably supporting the receiving plate with respect to the main body bottom plate with respect to the main body bottom plate; and means for enabling rotation of the said receiving plate and fixing the receiving plate to the main body bottom plate. It is an object of the present invention to provide a copying apparatus in which the installation position of a paper feed unit can be easily and accurately corrected.

〔Example〕

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

Reference numeral 1 denotes a copying apparatus main body (hereinafter referred to as the main body) placed on a pedestal 2. The main body 1 is provided with a paper feed unit 5 into which two paper feed cassettes 3 and 4 can be attached. As shown in FIG. 5, the paper feed unit 5 includes first paper feed sections 6 and 7 for pulling out the sheets loaded in the paper feed cassettes 3 and 4 one by one from the top layer, and the first paper feed sections 6 and 7. The second paper feed section (register roller) 10 is provided for feeding paper to a transfer section (image forming section), not shown. Further, the paper feeding unit 5 is
As shown in Figures 1 and 3, a step is provided on the inner surface of the telescopic side of telescopic rails 13, 13 whose base ends are fixed to the rising pieces 12, 12 on both sides of the receiving plate 11 fixed to the bottom plate 1' of the main body 1. Suspended on the attached protrusions 14, 14 via grooves 15, 15 formed on the lower edges of both side plates,
It can be pulled out from the paper feeding position to the non-paper feeding position by riding on the telescopic rails 13, 13. It is desirable that the telescopic rails 13, 13 have sufficient strength and telescoping amount to allow the paper feed unit 5 to be pulled out to a position where the entire paper feed unit 5 is completely exposed outside the main body 1.

A receiving plate 1 to which the telescopic rails 13, 13 are fixed
1 is fixed to the bottom plate 1' of the main body 1 at four locations, namely, both corners a and b on the back side (drum side A) and both corners c and d on the front side, as shown in FIGS. 3 and 4. , is rotatably supported with one of them as a reference. As a supporting means, a horizontally elongated hole 16a provided at one rear corner a, which is the fixed part of the receiving plate 11, is inserted into the lower surface of the distal end of a bracket 17 whose proximal end is fixed to the main body bottom plate 1'. Arc-shaped holes 16b, 16c, and 16d are provided in the other corner portions b, c, and d so that the receiving plate 11 can rotate with respect to the pin 18, and the holes have a diameter smaller than the width of these holes. It is designed to be tightened and fixed with a screw rod 19. That is, the receiving plate 11 has arcuate holes 16b,
By loosening the screw rod 19 which is the fixing means for the corners 16c and 16d, they can be moved laterally within the clearance between the horizontally long hole 16a at the corner a and each arcuate hole 16b, and can be moved in an arcuate manner using the pin 18 as a fulcrum. Move (rotate) vertically within the length of hole 16b...
I'm starting to be able to do it.

Reference numeral 20 denotes a guide member that guides the drawn-out sheet feeding unit 5 to the sheet feeding position without lateral movement, and is connected to the receiving plate 1.
The paper feed unit 5 is provided on the back side of the paper feed unit 5 so as to circumscribe both side plates of the paper feed unit 5. The guide member 20 may be omitted as long as the telescoping rails 13, 13 have enough strength to prevent rolling.

Reference numeral 21 denotes a positioning pin when the paper feeding unit 5 is stored in the paper feeding position, and is horizontally and parallelly protruded from a wall plate 22 installed along the back edge of the receiving plate 11. It can fit into the hole 24 provided opposite to the inner surface plate 23 of.

Reference numeral 25 denotes connectors provided on the wall plate 22 and the inner surface plate 23 of the paper feeding unit 5, respectively, and are positioned so that the paper feeding units 5 can be connected to each other at the paper feeding position.

26 is the upper cassette 3 of the paper feed unit 5
The outer plate 26 is a means for forming a paper path 8 communicating with the upper and lower plates 26 as shown in FIG.
The upper plate 26a can be opened upward through an upper hinge portion 27, forming a jam paper ejection mechanism. The abutting portions of the upper and lower plates are made to mesh with each other on comb teeth, and the tips of the teeth of the lower plate are bent outward to prevent the leading edge of the paper from coming into contact with each other. 35
36 is a stopper of the upper plate 26a fixed to the side plate of the paper feed unit 5, and a spring 36 biases the upper plate 26a in the direction of closing (in the direction of pressing against the stopper 35).

Reference numeral 28 denotes a locking mechanism for locking the paper feeding unit 5 at the paper feeding position.As shown in FIG. A hook 3 that engages with pins 30, 30 provided at the swinging end of the movable lever 29.
1 and 31 are provided, and when drawing out the paper feed unit 5, the lock can be released by manually pushing up the handle 29' of the swing lever 29 on the paper feed unit side. It's becoming like that. 37 is the swing lever 2 on the paper feed unit 5 side.
9 in the locking direction.

33 is a front cover of the main body 1, and when the front cover 33 is closed, the outer cover 3 of the paper feed unit 5 is closed.
The sheet feeding unit 5 cannot be pulled out unless the front cover is opened, and conversely, the front cover 33 does not correctly store the sheet feeding unit 5 in the sheet feeding position. This prevents the door from being closed and prevents the copy operation from starting.

Next, the operation of the above embodiment will be described.

If it is discovered that the paper is bent in the paper feed unit, first open the front cover 33 of the main body 1 as shown in FIG. Next, the paper feed unit 5
When you put your hand on the handle part 29' that protrudes from the exterior cover of the
8 is released and the paper feed unit 5 is moved to the telescopic rail 1.
3 and 13 and pull it out, and the part where the unit was housed is opened as a space, so insert your hand into that part, loosen the screw rod 19 that fixed the corner of the receiving plate 11, and remove the receiving plate. The plate 11 is moved horizontally and vertically around the pin 18 that fixes one corner of the plate, and once the position is determined, the screw rods 19, which are each fixing means, are tightened to move the paper feeding unit to its initial position (paper feeding position). You can easily correct paper bends, etc. by pushing it into place.

〔Effect of the invention〕

As described above, according to the present invention, a receiving plate having a slide member capable of supporting the paper feeding unit so as to be pulled out from the paper feeding position to the non-paper feeding position is installed on the bottom plate of the main body in the horizontal and vertical directions with respect to an arbitrary location. Since it is fixed so that it can be adjusted in the direction, if the paper feed unit is bent or skewed, all you have to do is adjust the receiving plate, instead of moving one of the two guide members like in the past. This eliminates the need for any troublesome adjustment work such as moving the other one in accordance with this, and provides an excellent effect in that the paper feeding unit can be easily installed and modified.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a perspective view of the external appearance of the copying machine, Fig. 2 is a perspective view of the paper feed unit with it pulled out, and Fig. 3 shows the receiving plate of the paper feed unit. 4 is a plan view showing the adjustment state of the receiving plate; FIG. 5 is a sectional view of the paper feeding unit; FIG. 6 is a perspective view of the jammed paper ejecting mechanism;
FIG. 7 is a perspective view of the locking mechanism. DESCRIPTION OF SYMBOLS 1... Copying apparatus main body, 3, 4... Paper feeding cassette, 5... Paper feeding unit, 12... Receiving plate, 13
...Telescopic rail.

Claims (1)

[Scope of Claims] 1. A paper feeding unit 5 including paper feeding means 6, 7 and means for forming paths 8, 9 for paper fed by the paper feeding means 6, 7; 5, a telescopic rail 13 that supports the telescopic rail 13 so that it can be pulled out and moved between a paper feeding position and a non-paper feeding position, a receiving plate 11 that fixes and supports the base end of the telescopic rail 13, and the receiving plate 11, and a main body bottom plate 1' that supports the main body bottom plate 1', and
means for rotatably supporting the support plate 11 with reference to the location;
and means for fixing the receiving plate 11 to the main body bottom plate 1'.