JPS6112539A - Paper feeder - Google Patents

Abstract

PURPOSE:To simplify the construction of a cassette, reduce its size and weight and facilitate its handling, by making it possible that the position of at least one of a pair of cassette reception members provided on the frame of a paper feed section and having cassette reception grooves facing each other is changed in the direction of the width of the cassette. CONSTITUTION:When a paper feed cassette 3 is to be set in a paper feed section 2, the paer feed cassette is chosen depending on the size of a copy and the positions of both reception members 4, 5 are adjusted depending on the size. At that time, the operating member 71 of a locking means is turned counterclockwise to push down a clamping plate 7 to separate an elastic member 76 from the bottom of a frame 21 to unlock the reception member 4. The member 4 is then moved to a position corresponding to the size of the cassette 3. The operating member 71 is turned clockwise to pull up the clamping plate 7 to bring the elastic member 76 into pressure contact with the bottom of the frame 21 to lock the reception member 4 in a prescribed position. Since such paper feed cassettes are exclusively used for sizes of copies, respectively, an adjusting partition plate or the like does not need to be provided in each cassette. This results in simplifying the construction of each cassette, reducing its size and weight and facilitating its handling.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides a paper feed device for copying machines, printers, etc.
In particular, part 1b relates to a paper feeding device that stores and feeds sheets of paper such as copy paper and recording paper for various quizzes into paper feeding cassettes according to size.

(Prior art) Conventionally, N? J'IM, a method for feeding paper of various sizes to a printer, etc., published in Japanese Patent Application Laid-Open No. 53-510.
J: Sea urchin shown in the November bulletin, 1 sheet in the paper feed section of a copying machine
! Paper feeding power 1'! A partition plate 1- is formed, and a partition plate movable in the width direction of the paper is placed in the paper feed cullet. After storing paper of a desired size in the paper feed cassette, After determining the size of the paper, the paper feeding power is 1?
There is a known copying machine that feeds paper by setting it in the paper feed section of the copying machine. is constant, and is included in the maximum paper size according to this paper feed section. What is the paper feeding power? Because it has a rat structure, it has a paper feeding power of 1, especially when storing small-sized paper! I need more people≧；゛! It's very difficult to handle when attached to the paper feed section, and the operability is low.
), each paper feed force 1! tsu1-hj1. ．． Since it is necessary to install a partition plate for size adjustment inside the paper feed cassette, the structure of the paper feed cassette is complicated and there are problems such as startup.

(Objective of the Invention) The present invention solves these problems by storing sheets of paper in dedicated paper feed cassettes for each size, and placing the desired size of these paper feed cassettes in the paper feed section of a copying machine. It is necessary to install a cutting board for size adjustment in the paper cassette so that it can be set arbitrarily, and it is necessary to install a cutting plate for size adjustment in the paper cassette. The present invention provides a paper feeding device that is lightweight and easy to handle.

(Structure of the Invention) The paper feed 'JAIa' of the present invention has a pair of cullet receiving grooves in a frame provided in the paper feed section.
! At the same time as placing the cassette receiving frame, place one cassette receiving frame at least I) on the back of the double-sided set receiving frame.
The feature is that the position can be changed in the J direction, and the force is 1'! To adjust the position of the receiving frame, a desired size of force can be applied to the paper feed section of the copying machine.

(Embodiment) First embodiment (center reference type) Figures 1 to 6 show examples of the center reference type.
' et al.

In the figure, this copying machine has a paper feeding section 2 installed on one side of the copying machine main body 1, and this paper feeding section 2 has a paper feeding force of 1 to 1 for each size. The cullet 3 is selectively inserted, and the central part of the cullet in the width direction is set at 3mm, and the cullet is held at 0mm, and the paper is fed. .

The paper feed cullet: 3 contains paper P's size I, such as A2 size, △3 size, 114 size, Δ4 size, li ji 1”
I? A force of several seconds formed in a magnitude corresponding to '7 12
Tsuto is used and these 8 clam paper powers l! Paper sheets 1) of a predetermined size are stored in each of the trays 1-3.

In addition, for each paper feed h I=91 to 3, there is a li tJ +I
- A chevron protrusion 32 of Megawa is formed, and tUt is formed on the lower surface of the tip.
Inclined protrusion 33 for the first step and regulation stop 1- during insertion.
A collar portion 34 is provided.

On the other hand, in the paper feed section 2 of the copying machine 1, in the frame 21,
A pair of cassette receiving frames 4.5 are arranged in stages G-J so as to face each other in the width direction of the cassette so that their positions can be changed in order to selectively hold the paper feed caps 1-3 of various types of trays.

The double-force set receiving frames 4 and 5 have cassette receiving grooves 41 and 51 formed on their opposing inner surfaces, and reinforcing protrusions 42 and 52 are provided at the center of the frames, so that the cross section is shaped like It is formed. Note that the above-mentioned protrusion 42.degree.

Said double-edged I? The -1-wall inner surface of Tsuto receiving vortex 41.51 has a force [ζtsu1~l, Q 1-JIL Megawa chevron protrusion 43.5
3 is provided protrudingly, and four parts 4/I, 54 of the cassette ejection stopper are provided on the inner surface of the lower wall, and leaf springs 45.55 are provided on the inner wall surface of both receiving grooves 41 and 51. .

Double-edged [? Guide protrusions 46.56 are protruded from the lower surfaces of the brackets 1 to 4 and 5, respectively, and each protrusion 46.56 is inserted into a pair of elongated guide holes 22.23 installed in the frame 21. They are slidably engaged with each other.

Further, on the lower surface of the frame 21, screws 61.62 are respectively installed on the lower surface of each guide protrusion 46.56 of both receiving frames 4°5.
Through this, racks 63 and 64 are fixed, and both racks 63
．． 64 is engaged with a pinion 66 rotatably provided at the center of the lower surface of the frame 21 via a shaft 65.

Among the receiving frames 4 and 5, one receiving frame 4 is provided with a locking means G-J. The locking means consists of a fastening plate 7 provided on the outer surface of the receiving frame 4 via a screw 72, and an operation member 71 of A shown in FIG. 1. Attach a vertical board 75 with a vertically elongated hole 74 on the right side and in the center and an elastic body 76 such as rubber to the soil surface. ! ,
:The horizontal plate 77 has a J-shaped cross section, and the horizontal plate 77 is placed from the elongated hole 22 to the ground surface of the frame 21. A long hole 74 (plate 7t) is installed on the outer surface of the receiving frame 4, and the screw 72 is ground vertically.
The operation member 711 has an arc-shaped cam hole 78 and a circular rotation part 79.
It is rotatably installed on the screw 72 with the protrusions 73 of 4 & 7 engaged in the hole 7B.

Further, in a part of the paper feed section 2, a paper feed 1]-ra shaft 8 is rotatably mounted horizontally between the side plates 24 (only one side is shown) of the frame 21, and a plurality of (IJ in the illustrated example) paper feed rollers 81 and 82 are fixed. The roller shaft 8 is rotationally driven by a drive device (not shown) provided in the copy 111.

In the above configuration, when setting the paper feed cassette 3 in the paper feed unit 2, first, depending on the copy size, check whether the paper feed power l that stores the paper P that matches the size is? Select rat 3 and place both receiver frames 4.5 digits I according to the cassette size.
Adjust ν1.

This match, [1! Rotate the operating member 71 of the means counterclockwise I! By pressing down the tightening plate 7, the bullet I
Place the 11 bodies 76 on the back of the 71 gnome 21 with a distance of 1! , After releasing the [1] check on the receiving frame 4, apply the force 1? to the receiving frame 4. Move to the position corresponding to
Tighten by turning 471 v1 times in one direction of time and date (=l
Pull up the IJ plate 7, bring the elastic body 76 into contact with the back surface of the frame 21, and fix the receiving frame 4 in a predetermined position.
6, so by simply moving one of the receiving frames 4, both receiving frames 4 and 5 will be moved in the width direction of the cullet in conjunction with each other. Both receiving frames 4 and 5 are fixed.

When positioning the above-mentioned receiving frames 4 and 5, the outer surface of the frame 21 that forms the paper feed section 2 or the elongated hole 22.2
3, at a position corresponding to the cassette size in advance. A3. B4. Place the mark 47 on the receiving frame 4 or one side edge of the receiving frame 4 at the mark 4.85, etc. J: If the size is set to 1, the positions 1r1 of both receiving frames 4 and 5 can be determined more easily and accurately.

Place the above-mentioned receiving frames 4 and 5 in the predetermined positions. , :The rest is shown in FIGS. 5 and 6 and is formed on the inner surface of both receiving frames 4 and 5. , :Power 1? ] - With respect to receiving groove / 11.51, paper feed force cellars 1 to 3 are tilted forward F, and installed on the lower surface of the front end thereof. .It hits the outer end surface of 5 (insert L until j/rl).
/ /:: After that, the paper feed cassette 3 is returned to the horizontal state at t, and the protrusion 32 provided on the upper surface of the tip end is engaged with the inside of the protrusion 43.53 provided on both receiving frames 4 and 5. At the same time, the protrusion 33 provided near the tip of the lower surface of the cassette is engaged with the recess/14.54 provided in both receiving frames 4 and 5. Specifically, the paper feed cassette 3 is held by both receiving frames 4 and 5.

In this case, since the paper feed cassette 3 is a type exclusively for each size, there is no need to install a partition plate for size adjustment inside the cassette, and the structure of the cassette #4 is simplified accordingly. It is small and lightweight, making it easy to handle, and the positions of both receiving frames 4 and 5 are changed according to the cassette size. It can be easily and accurately supported between the two receiving frames 4.degree.

Also, the paper P stored in the paper feed force [kit 3] has a paper feed force of 1! The oscillator v1 is installed via a spring 35 in the
It is pushed upward by the bottom plate 36, and both ends of the tip are held by claw members 37 that are swingably provided in the cassette, and this paper feeding force is Paper feed section 2
0 While supported by the support frames 4 and 5, the yn wAp
Finally, the paper is pressed against each paper feed roller 81, 82. Then, as the paper feed roller shaft 8 is driven by the drive device within the machine, each of the paper feed rollers 81 and 82 rotates, and the first to L sheets of the paper P are fed one by one.

Second embodiment (one-sided reference type) Figures 7 and 8 show a one-sided reference type,
In this embodiment, only one receiving frame 4 can be repositioned in the cassette width direction, and the other receiving frame 5 is fixed to the frame 21. Note that the guide of the receiving frame 4, the locking means, and other structures are the same as those of the first embodiment.

If the configuration is such that only one receiving frame 4 is repositioned, the rack 63.
4 Y> Pinion 66 OJ, 1st hole 23 etc. of Bisenri can be omitted, and sideways can be converted to RFA wood.

In addition, in the second embodiment, r! II f
I: C1 on the paper feed roller shaft 8
From the receiving frame 5 on the fixed side! A predetermined distance in the 71 direction! 1
11111111 Paper feed [] - La 82 is fixed 6
1 on the surface of the receiving frame 4 side on the III 1EII side. A flat 1 to surface 80 are formed in a predetermined quality range of L, and a sheet feeder 81 is fitted in this portion so as to be movable only in the axial direction, and a cylindrical shaft 83 and The guide roller 84 with a vortex is fitted together with the paper feed roller 81 so as to be able to slide in the axial direction, and the iR85 formed on the outer peripheral surface of the guide roller 84 is connected to the -L surface of the receiving frame 4. It is rotatably engaged with a roller engaging portion 48 provided in the.

In this state, the distance from one receiving frame 4 to the paper feeding roller 81 is the distance 1 from the other receiving frame 5 to the paper feeding roller 82.
The length of the cylinder shaft 83 is determined to be equal to IiIt.

If you do this, the salary will be yht? The size of cut 3 is the size of the paper
] When one of the receiving frames 4 was moved in the width direction of the cassette to adjust its position, the paper feed roller 81 followed the movement of the receiving frame 1 and adjusted to the noise of paper 1). Therefore, even if the size of the paper P changes, the paper feeding to the paper feed rollers 81 and 82 can be smoothly performed.

In the above embodiment, the receiving frame 4 is tightened [Plate 7, etc.].
The operation 811 is configured to be fixed by the material 71, but as shown in FIGS. 9 and 10, the ball 91 is housed in the ball case 9 in a protruding state by the spring 92, A ball case 9 is provided to protrude from the lower surface of the receiving frame 4 via a lid 93 and a screw 94, and is inserted into the elongated hole 2 of the frame 21.
U1 is attached to the lower surface of the guide projection 46 engaged with the frame 21 so that the balls 91, the ball case 9, etc. move together with the receiving frame 4; Elongated hole 2 in the opposite position
A positioning member 95 is provided along the cassette 2, and cutout-shaped ball retaining portions 96 are provided at several locations corresponding to the size of the cassette 1-+1 of the member 950. When the receiving frame 1 is moved in the width direction of the cassette 111f, the ball 91 is connected to the ball engaging portion 96.
The receiving frame 4 may be positioned in a position corresponding to the cassette size by engaging with the cassette.

The positioning means on the ball 91 and the ball engaging portion 96 are not limited to the single-sided base 11j-type of the second practical example, but are also applicable to the 1"-center base 1!-type of the first embodiment. -1) Can be hired.

Further, in each of the above embodiments, the positioning means provided on the ball 91 and the ball engaging portion 96 and the locking means provided on the root 7 and the operating member 71 for tightening may be used in combination. Good.

In the first embodiment, any interlocking means may be employed, such as interlocking the receiving frames 4 and 5 with a wire and a bobbin, or with a chino and a sprocket.

Further, in the first embodiment, the positions of both paper feed rollers 81 and 82 may be changed in conjunction with the changes in the positions of both receiving frames 4.5.

(Effects of the Invention) As described in Explanation 1, according to the present invention, the cassette receiving frame provided in the paper feed section of a copying machine can be repositioned to a desired cassette size position, and the paper feed section can be placed in the desired size. Paper feeding power 1? The tool can be held accurately at all times. In addition, by storing various types of paper in advance by size in dedicated paper cassettes and inserting them into the paper feeding section, the paper cassette can be downsized to the minimum necessary size and the paper cassette can be stored. This has the effect of making the space smaller.

[Brief explanation of drawings]

FIG. 1 is an external perspective view showing an example of a center reference type copying machine employing the paper feeding device of the present invention, FIG. 2 is an exploded perspective view of the paper feeding device, and FIG. 3 is a perspective view showing its assembled state. 4 are perspective views seen from below, FIGS. 5 and 6 are longitudinal cross-sectional views of essential parts along the longitudinal direction of the cassette, showing how to insert and hold the paper feed cassette, and FIG. 7 8 is a perspective view of the main parts showing an embodiment of the one-side reference type, and FIG. 8 is a longitudinal cross-sectional view of the main parts along the width direction of the cassette, showing the relationship between the cassette receiving frame on the movable side, the paper feed cassette, and the paper feed roller. 9th
The figure is an exploded perspective view showing another embodiment of the locking means of the movable receiving frame, and FIG. 10 is a longitudinal cross-sectional view of the main part showing the assembled state. DESCRIPTION OF SYMBOLS 1... Copy machine, 2... Paper feed section, 3... Paper feed cassette, 4.5... Cassette holder frame, 7... Tightening plate, 8
...Paper feed roller shaft, 9...Ball case, 21...
・Frame, 22.23--Elongated hole, 41--Cassette receiving groove, 46--Guide protrusion, 51--Cassette receiving groove, 56--Guide protrusion, 63.64--Rack,
66... Binion, 71... Operating member, 91...
Ball, 92... Spring, 95... Positioning member, 9
6...Ball engaging part.

Claims (1)

[Claims] 1. A pair of cassette receiving frames with opposing cassette receiving grooves are arranged on the frame provided in the paper feed section, and at least one of the two cassette receiving frames can be repositioned in the cassette width direction. A paper feeding device characterized by being provided.