JPH01176744A - Sheet feeding device - Google Patents

Abstract

PURPOSE:To supply copying sheets surely one by one by equipping a sheet feeder device with a means to take out copying sheets placed upon a table and a detaining means to separate the sheets which is furnished near the two ends of the first named takeout means. CONSTITUTION:Sheet guides located near the two ends of rollers 90, 91 are equipped with pawls 131, 132 to be detained at the two edges of sheets to be placed upon a table 35. When sheets are taken out by the rollers 90, 91, the uppermost sheet is detained with these pawls 131, 132 and separated from the other sheets on the table 35. Thus only one sheet can be taken out surely to ensure that the copying operation takes place properly even when the copying machine to which this sheet feeder device is fitted is not provided with any separator roller.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention relates to a paper feeding device that is attached to an image forming apparatus such as an electronic copying machine and is capable of feeding a large amount of paper. .

(Prior Art) As is well known, various paper feeding devices of this type have been developed. This type of paper feeding device is equipped with a loading table on which a large amount of paper is loaded inside the paper feeding device, and this loading table is raised according to the amount of paper loaded on it, and in this state. , the paper is taken out by a paper feed roller and fed to the main body of the copying machine.

(Problems to be Solved by the Invention) By the way, the conventional paper feeding device described above simply takes out the paper using the paper feeding device and supplies it to the main body of the copying machine.

For this reason, a plurality of sheets of paper may be taken out at the same time by the paper feed roller. Therefore, the copying machine to which this paper feeding device is installed must be equipped with a separation device such as a separation roller, and the copying machines to which this paper feeding device is installed are limited.

This invention solves the problem that there is a possibility of taking out a plurality of transfer materials at the same time, and the number of image forming apparatuses that can be equipped with a paper feeding device is limited. It is an object of the present invention to provide a paper feeding device that can reliably feed materials one sheet at a time and that is not limited to the image forming devices that can be attached to it.

[Structure of the Invention] (Means for Solving the Problems) The present invention has a device body in which a large amount of transfer material is accommodated,
The material to be transferred is held by a mounting table that can be raised and lowered, and in a state where the main body of the apparatus is connected to the image forming apparatus, the material to be transferred is placed on the mounting table in a paper feeding device that supplies the material to be transferred to the image forming apparatus. a taking-out means for taking out the transferred material; and a locking means provided near both ends of the taking-out means and latched to a corner of the transferred material placed on the mounting table to separate the transferred material. It consists of

(Function) This invention provides locking means to be locked to the corners of the transfer material placed on the mounting table near both ends of the transfer material take-out means, and when the transfer material is taken out. By the locking means,
To ensure that one transfer material can be separated and taken out from other transfer materials placed on a mounting table.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 3, 4, and 4 show the paper feeding device.

This paper feeding device 11 includes a case body 12 made of resin in which a paper lifting mechanism (to be described later) is accommodated, a connecting portion 13 integrally formed with the case body 12, and a connecting portion 13 and the case body 12. It is comprised of a cover 14 that integrally covers the upper part of the case body 12 and is provided with a paper feeding mechanism, an electric circuit, etc., which will be described later, and a door 15 that is provided on the case body 12 so as to be openable and closable. Ribs 15a for reinforcing the door 15 are provided on both side edges of the door 15.

The connecting portion 13 connects the paper feeding device 11 to the copying machine main body 16, as shown in FIG.
It has the same shape as the paper feed cassette that is loaded into the cassette. That is, projections 13a are provided on both sides of the connecting portion 13, and the connecting portion 13 is inserted into the paper feed cassette mounting portion 16a of the copying machine main body 16.

When it is touched, the protrusion 13a and the base end 13b of the connecting part 13
are engaged with the guide groove 16b of the protrusion 13a and the opening 16c of the mounting portion 16a, respectively, so that the paper feeding device 11 is held.

In addition, handles 12 are provided on both sides of the case body 12, respectively.
A is provided. The position and width W of this handle 12a
As shown in FIG. 5, the position and width of the connecting portion 13 coincide with that of the connecting portion 13, and the connecting portion 13 and the handle 12a have the same shape as a normal paper feed cassette. Therefore, the paper feed device 11 is connected to the paper feed cassette mounting portion 16' of the copying machine main body 16.
By holding this handle 12a, when attaching the paper feed cassette to a paper feed cassette or removing it from the mounting portion 16a, the paper feed cassette can be operated with the same feeling as a normal paper feed cassette.

Furthermore, as shown in FIGS. 3 and 4, a control panel 17 is provided in a portion of the cover 14 that corresponds to the case body 12.
A light emitting diode 18 is provided to indicate whether the power of the paper feeding device 11 is on or off, and a light emitting diode 19 is provided to indicate that a paper jam has occurred. In addition, cover 14
A notch 14a is provided in a portion corresponding to the connecting portion 13, and a paper feed roller 16d provided on the copying machine main body 16 is inserted into this notch 14a, as shown in FIG. There is.

Further, as shown in FIG. 6, a recess 12b is provided at the bottom of the case body 12 at a portion indicated by P in FIG.

As shown in FIG. 7, the base end of the presser member 21 is fixed to this recess 1.2b by, for example, a thumbscrew 20, and the tip of the presser member 21 is attached to the main body of the copying machine. 16 is brought into contact with a contact portion 23 made of a rubber material, for example, provided on the side surface of a table 22 on which the support member 16 is placed.

Therefore, even when a large amount of paper is stored inside the paper feeding device 11, the paper feeding device 11 can be reliably held horizontally.

Although the presser member 21 is in contact with the base 22, depending on the shape of the copying machine main body, the presser member 21 may be in contact with the copying machine main body.

Next, a mechanism for lifting and lowering sheets stored inside the paper feeder 11 will be described.

In FIGS. 8 to 11, first and second side frames 31 and 32 are arranged and fixed along both inner side surfaces of the case body 12.
The side frames 31, 32 are fixed at a predetermined distance by first and second fixing frames 33, 34 provided at the lower end and the upper end, respectively. These first and second
The side frame 31.32 has an extension portion 31a132.
a are provided respectively, and these extending portions 31a, 3
2a is fixed to a protrusion 13H provided on the connecting portion 13.

Further, a paper mounting table 35 as shown in FIG. 9 is provided between the first and second side frames 31 and 32. A brake pad 36 is provided at the center of the back surface of the mounting table 35, and near the brake pad 36 there is a through hole 35a1 in which the tip of a paper out detection member 103, which will be described later, is accommodated, and a through hole 35a1 according to the paper size, which will be described later. Insertion opening 35bs 35 into which the legs of the paper guide provided are inserted.
C%3d, 35e are provided. Furthermore, the mounting table 3
A frame 37 is attached to the back side of 5.

At both ends of the frame 37, there are mounting portions 37a and 37b to which drive belts are respectively attached.

37c and 37d are provided. These installations are part 37
As shown in FIGS. 10 and 11, a to 37d are fitted into slits 31b, 31C%B2b, and 32c provided in the first and second side frames 31.32.

Slits 31b, 31 of the first side frame 31
As shown in FIG. 10, pulleys 38, 39, 40, and 41 are provided at both longitudinal ends of C, and
A pulley 42 is provided near 1. Also, the second
At both longitudinal ends of the slits 32b and 32C of the side frame 32, as shown in FIGS. .46, 47 are provided, and among these pulleys 38 to 47, the boots 939 and 44 are connected to the shaft 4.
8, and are configured to rotate in one direction.

Furthermore, as shown in FIGS. 8, 10, and 11, endless timing belts 49, 50 are attached to these pulleys 38-42, 43-47, and the slits 31bs 31
c, 32bx 32c, each is wrapped around in an approximately M shape, and these timing belts 49.50
are in contact with rollers 51, 52, and 53 disposed near the pulleys 38, 39, and 44, respectively. Further, the frame 37 provided on the mounting table 35 is attached to the timing belt 49, 50 at a portion 37a13.
7b1, 37c, and 37d are each fixed. Therefore, the mounting table 35 has the slits 31b, 31c, 32b,
It is possible to move horizontally along 32c.

Between the mounting stand 35 and the bottom of the case body 12,
A spring 54 is provided. That is, one end of this spring 54 is accommodated in a recess 12b provided in the bottom of the case body 12 through a through hole 33a provided in the first fixed frame 33, as shown in FIG. , the other end is the ninth
It is fixed to engaging pieces 37e, 37f, and 37g of a frame 37 attached to a mounting table 35 shown in the figure. Therefore, the mounting table 35 is always urged by the spring 54 in a direction away from the bottom surface of the case body 12.

By the way, this spring 54 connects the mounting table 35 to the slit 31.
b, 31c, 32b, and 32c, and the biasing force of the spring 54 is
The weight is slightly lower than the maximum loading weight of paper sheets placed on the mounting table 35.

On the other hand, a mounting table 35 is provided on the first side frame 31.
The timing belt 49.50
A drive section is provided to drive the.

That is, as shown in FIG. 10 and FIGS. 12 to 17, the pulley 38 is integrally provided with a gear 55 having a larger diameter. These pulleys 38 and gears 55 are attached to a rotating shaft 57 via a one-way clutch 56 built into them, and the timing belt 57 is moved in the direction of lowering the mounting table 35 (in the direction of the arrow shown in FIG. 10).
9 is operated, the one-way clutch 56 is fixed to the rotating shaft 57, and the pulleys 38.55 are rotated together with the rotating shaft 57. In addition, in the case of the opposite direction, the rotating shaft 57
It is now considered to be in a free state.

A gear 58 having the same diameter and the same number of teeth as the gear 55 is fixed to the rotating shaft 57, and a gear 59 is meshed with the gear 58. A bevel gear 60 is fixed to this gear 59, and a bevel gear 61 is meshed with this bevel gear 60. A gear 62 is fixed to this bevel gear 61,
A gear 63 is meshed with this gear 62. This gear 63 is integrally provided with a gear 64, and this gear 64 has a worm gear 65 driven by a motor to be described later.
are engaged.

In the above configuration, when paper is placed on the mounting table 35,
A force acts in the direction of lowering the loading table 35, and a force is applied to the worm gear 65 via the pulley 38 and gears 55 to 64, but since the resistance between the gear 64 and the worm gear 65 is large, the maximum paper loading type Ω and the spring The mounting table 35 is prevented from descending with a force that is about the difference between the biasing force 54 and the biasing force 54. Furthermore, even when no paper is placed on the loading table 35, the spring 54 is caused by the resistance of the worm gear 65 and the gear 64.
The mounting table 35 is prevented from rising due to the force.

Further, on the side surface of the first side frame 31, a tenth
As shown in FIGS. 12 and 13, a lever 66 constituting an actuating means is provided. The lever 66 is rotatable by a shaft 67 provided at the center in the longitudinal direction, and has a contact portion 67 at one end that can come into contact with the rib 15a of the door 15. Further, a coil spring 68 is provided between the other end of the lever 66 and the first side frame 31, and the spring 68 allows the lever 66 to rotate at one end in the direction of the door 15 at all times. energized.

On the other hand, a rotator 69 is provided on the first side frame 31 located near the other end of the lever 66 . This rotator 69 is rotated by a shaft 72 provided at an intermediate portion.
It is rotatably provided on the side foot 31 of. A coil spring 73 is provided between one end of the rotator 69 and the other end of the lever 66, and the spring 73 causes the rotor 69 to interlock with the lever 66.

Moreover, gears 70.71 that are rotatable in one direction are provided at the other end of the rotor 69, and these gears 70.71 can mesh with the gears 55.58. .

In the above configuration, when the door 15 is opened as shown in FIG. section is pressed down. The rotor 69 is therefore rotated counterclockwise and the gear 70.71 is spaced apart from the gear 55.58.

Furthermore, when the door 15 is closed, one end of the lever 66 is pressed down by the rib 15a of the door 15, as shown in FIG. Therefore, the lever 66 is rotated counterclockwise against the biasing force of the spring 68, and in conjunction with this, the rotor 69 is rotated clockwise. Therefore, gear 70
．． 71 is meshed with gears 55 and 58. Therefore, when the door 15 is closed, the gears 55 and 58 are rotated together, and when the gear 58 is rotated in the direction of arrow W shown in FIG. 10 according to the operation of the worm gear 65, the one-way The gear 55, which is set free with respect to the shaft 57 by the clutch 56, is rotated in the same direction as this, and the mounting table 35 is raised as shown by arrow U in the figure. FIG. 17 shows a state in which the mounting table 35 is raised.

Next, a paper feeding mechanism provided on the cover 14,
and various sensors etc. will be explained.

In FIGS. 18 to 21, a U-shaped frame 81 is provided on the back side of the cover 14. As shown in FIGS.

A motor 82 is attached to a first side surface 81a of the frame 81, and a pulley 83 is provided on the rotation shaft of the motor 82.

In addition, the first and second side surfaces 81a181b of the frame 81
A shaft 84 is rotatably provided between the two, and pulleys 85 and 86 are rotatably provided integrally with this shaft 84. A timing belt 87 is stretched between this pulley 85 and the pulley 83. Also,
The base end of a movable member 88 is rotatably provided on the shaft 84 ( ; ). A shaft 89 is rotatably provided on the distal end of the movable member 88 , and a front end is provided at both ends of the shaft 89 . Rollers 90 and 91 are provided to send out the sheets loaded on the writing table 35. Further, a pulley 93 is provided on the shaft 89 via a one-way clutch 92. A timing belt 94 is stretched between them, and the front S rollers 90 and 91 are
When the motor 82 is rotated in one direction, it is driven in the direction to feed out the paper, and when it is rotated in the other direction, it is stopped. Further, a weight 94 for balance adjustment is provided at the base end of the movable member 88.

On the other hand, a shaft 96 is rotatably provided on the second frame 81b. The worm gear 65 is provided at the tip of this shaft 96, and a pulley 98 is provided at the base end via a one-way clutch 97. A timing belt 99 is stretched between this pulley 98 and the pulley 86, and the worm gear 65 is connected to the motor 82.
When rotated in one direction, it is stopped, and when rotated in the other direction, it is rotated. therefore,
Depending on the rotation direction of this motor 82, rollers 90, 91,
And the mounting table 35 is selectively driven.

Further, as shown in FIGS. 19 and 21, a switch 100 for detecting opening/closing of the door 15 is installed on the back side of the cover 14 via a member 101, and an operating portion 100a of this switch 100 is attached. An operator 15a provided on the cover 15 can come into contact with it.

Further, near the roller 90, there is a level detection member 102 for detecting the height of the mounting table 35, and a level detection member 102 for detecting the height of the mounting table 35.
paper out detection member 10 that detects the presence or absence of paper loaded on the
3 is provided. That is, a frame 104 is provided on the back surface of the cover 14, and intermediate portions of the level detection member 102 and the paper-out detection member 103 are rotatably provided on a shaft 105 provided on the frame 104. The frame 104 is provided with a level detection sensor 106 and a paper-out detection sensor 107, which are made of, for example, a photocoupler, a photosensor, etc., and these sensors 106.1
The other ends of the level detection member 102 and the paper-out detection member 103 can enter between the light emitting element and the light receiving element 07 (not shown). Therefore, the height of the mounting table 35 and the presence or absence of paper are detected by the level detection sensor 106 and paper out detection sensor 107.

Furthermore, a circuit board PCB on which a control circuit, which will be described later, is arranged is attached to the back surface of the cover 14, and this circuit board P
CB is covered by metal cover MC.

Next, the internal configuration of the connection section 13 will be further explained.

In FIG. 22, inside the connecting portion 13, first and second paper sensors 108 and 109 are attached to a member 110. It is attached via 111. This first
, and second paper sensors 108 and 109 are each constructed of a reflective sensor, for example, and are designed to irradiate light onto a paper and detect light reflected from the paper. These first and second paper sensors 108 and 109 are covered by a first paper guide 113 that is attached to the connecting portion 13 by a member 112, and a transparent Paper is detected through holes 113a and 113b. Furthermore, a paper size display section 13d is provided on the distal end surface of the connecting section 13. Code information indicating the paper size is set on the display section 13d, for example, depending on the position of the claw 13e shown in FIG.
3 is attached to the copying machine main body 16 described above, this claw 13e is detected by a micro switch (not shown) provided in the copying machine main body, so that the paper size can be determined on the copying machine main body 16 side. It has become.

In addition, as shown in FIG.
A second paper guide 114 is formed into a nail tube on the back side facing the paper guide 3, and the second paper guide 114
A black sheet member 115 is attached to the surface facing the second paper sensor 108, 109, and this sheet member 115 prevents light from being reflected when there is no paper.

Further, on the back side of the cover 14, the above-mentioned frame 1
04, a circuit board, etc. are attached to the harness 116, and the connecting portion 13 is provided with a third harness 116 for guiding both ends of the sheet in the width direction.
A fourth paper guide 117,118 is provided. Legs 11 of these third and fourth paper guides 117 and 118
7a.

117b, 118a, and 118b are the mounting bases 35
Insertion ports 35 b % 35 C % and 3 provided in
5d and 35e (shown in FIG. 9), respectively.

Next, the main parts of this invention will be explained.

As shown in FIGS. 1 and 2, near both ends of the rollers 90 and 91, claw portions 131 are provided as locking means that are respectively locked to both corners of the sheet placed on the mounting table 35. 13
2 is provided. These claw portions 131 and 132 are provided, for example, on opposing inner surfaces of paper guides 117 and 118, as shown in FIG.

In such a configuration, when the paper is taken out by the rollers 90.91, both ends of the paper are attached to the claw portions 131.
132 and is separated from other sheets placed on the mounting table 35.

Therefore, it is possible to reliably feed sheets one by one to the main body of the copying machine.

Next, the out-of-paper display of the paper feeder 11 for the copying machine main body 16 described above will be explained.

This paper feeding device 11 is not electrically connected to the copying machine main body 16 for signals other than a driving power source, and is configured to operate off-line. Therefore, it is necessary to notify the copying machine main body 16 of the paper-out state of the paper feeder 11.

By the way, a reflective paper sensor is provided in the paper feed cassette mounting portion 16a of the photo printer main body 16 to which the paper feed device 11 is mounted. This paper sensor has a light-emitting element and a light-receiving element, and the light output from this light-emitting element is irradiated into the inside of the paper feed cassette through a through hole provided at the bottom of the attached paper feed cassette. The presence or absence of paper is detected by using a light receiving element to detect the presence or absence of reflected light from the paper stored in the paper feed cassette.

In this embodiment, as shown in FIGS. 24 and 25, a recess 13c is provided on the back surface of the connecting portion 13, and this recess 13c
A light emitting diode 119 is provided inside. As shown in FIG. 25, the four portions 13c are positioned opposite to the paper sensor SC provided in the main body 16 of the copying machine.

Further, the light emitting diode 119 is turned on when the paper out detection member 103 and paper out detection sensor 107 described above determine that there is paper, and is turned off when it is determined that there is no paper, and the light is turned off. The presence or absence of paper in the device 11 is notified to the paper sensor SC of the copying machine main body 16.

FIG. 26 shows the configuration of the control system.

The control unit 120 controls the operation of the entire paper feeding device. The control unit 120 includes the aforementioned first and second paper sensors 108 and 109, a paper out detection sensor 107, a level detection sensor 106, and light emitting diodes 18 and 19 that respectively indicate power on/off and paper jam. A control panel 17 provided, a light emitting diode 119 that displays a paper-free display, a motor drive section 121 that controls the drive of the motor 82, and a switch 1 that detects the open/close state of the door 15.
00 is set.

In the above configuration, the operation will be explained.

First, when replenishing the paper feeder 11 with paper, the door 15 is opened as shown in FIG. 4, and in this state, the mounting table 35 is pushed down against the biasing force of the spring 54. door 1
5 is opened, the lever 66 and rotor 69 constituting the actuating means shown in FIG.
be separated from In this state, when the mounting table 35 is pushed against the urging force of the spring 54 and the resistance of the worm gear 65 and gear 64, the mounting table 35 is lowered.

In the above state, the paper is loaded on the loading table 35 and the door 1 is opened.
When the switch 5 is closed, the switch 100 is turned on, and the motor 82 is rotated in the other direction described above under the control of the control section 120 and the motor drive section 121. In this direction of rotation, the rollers 90.91 are stopped by the one-way clutch 92 and only the worm gear 65 is rotated by the one-way clutch 97. As a result, gear 64.63
~58 is rotated.

Further, when the door 15 is closed, the lever 66 is rotated by the rib 15a of the door 15, and the rotator 69 is rotated in conjunction with this. Therefore, the gears 70.71 provided on the rotor 69 mesh with the gears 55.58. Therefore, the gears 58 and 55 rotate together, and the power of the motor 82 is transmitted to the gear 55 without loss.

This rotation of the gear 55 rotates the gear 38, and the mounting table 35 is raised via the timing belts 49, 50.

As the mounting table 35 rises, the paper comes into contact with the rollers 90, 91, the level detection member 102 and the paper out detection member 103 are rotated, and the level detection sensor 106 and the paper out detection sensor 107 are turned off. When the controller 12
0, the motor 82 is stopped by the motor drive section 121, and the light emitting diode 119 is turned on. Thereafter, the motor 82 is rotated in the opposite direction (the one direction described above), and one sheet of paper on the a-placement table 35 is sent to the standby position. That is, when the motor 82 is rotated in the opposite direction, the one-way clutch 97 stops the worm gear 65, and the one-way clutch 92 rotates only the rollers 90 and 91. Therefore, when the paper on the mounting table 35 is sent out by the rollers 90.91 and the paper is detected by the first and second paper sensors 108, 109, the motor 8 is
2 is stopped, and the paper is stopped at a standby position where it is exposed from the notch 14a of the cover 14.

In this way, even if the motor 82 is stopped while the loading table 35 fully loaded with paper is raised,
As described above, since the mounting table 35 is driven via the worm gear 65, it does not descend due to the resistance of the worm gear 65 and the gear 64 and the biasing force of the spring 54.

In this state, when the copying machine main body 16 starts a copying operation, the paper feed roller 16d (shown in FIG. 5) of the copying machine main body 16 is lowered and comes into contact with the paper in the standby position, and this The paper is taken out by one rotation of the paper roller 16d. Then, when the paper is taken out, the paper feed roller 16
d is raised again. Also, when the trailing edge of the paper passes the first paper sensor 108, this first paper sensor 108
turns off, and the control unit 120 and motor drive unit 121
Under this control, the motor 82 is rotated in one direction. Therefore, when the paper on the mounting table 35 is taken out and the leading edge of the paper is detected by the first paper sensor 108, the motor 82 is stopped. Then, when the preceding paper taken out by the paper feed roller 16d is further fed into the copying machine 16 and the second paper sensor 109 is turned off, the motor 82 is activated by the control unit 12o1 and the motor drive unit 121. is rotated again in one direction under the control of the
The succeeding paper that is stopped at the paper sensor 108 position is fed. When the second paper sensor 109 detects the leading edge of the following paper, the motor 82 is stopped and the paper is stopped at the standby position. Copying machine body 16
When the copy operation is performed, the above operation is repeated.

On the other hand, when the paper on the mounting table 35 runs out, the paper out detection member 103 falls into the through hole 35a provided in the mounting table 35, and the paper out sensor 107 turns on. Then, the light emitting diode 119 is turned off by the control unit 120, and the copying machine main body 16 is notified that there is no paper. In the copying machine main body 16, a paper out message is displayed on, for example, an operation panel (not shown) in response to the output of the paper out sensor SC.

Note that after the motor 82 is rotated in one direction and the paper is sent from the mounting table 35 to the standby position, for example, about 0.5
If the paper is not detected by one or both of the first paper sensor 108 and the second paper sensor 109 even after seconds have elapsed, it is determined that a paper feeding error has occurred, and the light emitting diode 19 is turned on to indicate a paper jam. At the same time, the light emitting diode 119 is turned off to display a paper out display, and a paper replenishment display is displayed on the operation panel of the copying machine main body 16.

According to the above embodiment, the claw portions 131 and 132 are engaged with both ends of the paper placed on the mounting table 35 on the paper guides 117 and 118 located near both ends of the rollers 90 and 91.
is provided so that when the paper is taken out by the rollers 90.91, the uppermost paper is retained by the claw portions 131.132 and separated from the other papers placed on the processing table 35. I have to. Therefore, the mounting table 3
Since it is possible to reliably take out only one sheet of paper from the paper placed in the paper feeder 5, even if the copying machine to which this paper feeding device is installed is not equipped with a paper separation roller, copying can be performed reliably. It is possible to perform an action.

Further, since the paper is reliably fed one sheet at a time from the paper feeder, the copying machines to which this paper feeder is installed are not limited as in the past.

In the above embodiment, the separation claws 131 and 132 are provided on the paper guides 117 and 118, but the invention is not limited to this, and they may be provided on other parts.

It goes without saying that various other modifications can be made without departing from the gist of the invention.

[Effects of the Invention] As described in detail above, according to the present invention, the locking means that is locked to the corners of the transfer material placed on the mounting table near both ends of the transfer material take-out means is provided. is provided, and when taking out the transferred material, this locking means allows one transferred material to be reliably separated and taken out from other transferred materials placed on the mounting table, and the image that can be attached is removed. It is possible to provide a paper feeding device that is not limited to any forming device.

[Brief explanation of the drawing]

1 and 12 each show an embodiment of the present invention, in which FIG. 1 is a perspective view showing the main part of the claw part, FIG. 2 is a side view showing the main part of the claw part, and FIG. 3 is a side view showing the main part of the claw part. Figure 4 is a perspective view showing the appearance of the paper feeder according to the present invention, Figure 4 is a perspective view showing a different operating state from Figure 3, and Figure 5 is a side view showing the paper feeder installed in the main body of the copying machine. Figures 6 and 7 are shown to explain the holding member, respectively. Figure 6 is a perspective view of the main part showing the bottom of the case body, and Figure 7 is the main part of Figure 5. FIG. 8 is an exploded perspective view showing the elevating mechanism of the mounting table, FIG. 9 is an exploded perspective view of the mounting table, and FIGS. 10 and 11 show the elevating mechanism of the processing table. 12 to 17 respectively show the drive section of the elevating mechanism section, and FIG. 12 is an exploded perspective view showing the configuration.
Figure 13 is a side cross-sectional view of the main part of Figure 10 seen from a different direction, Figures 14 and 15 are side views of the main part showing different operating states of the lever, and Figure 16 is a side view of the main part viewed from above. 17 is a side sectional view showing a different operating state from FIG. 10, FIGS. 18 to 21 each show the structure of the cover, and FIG. 18 is a plan view of the main parts. , 19th
The figure is a partially cutaway side view, Figures 20 and 21 are exploded perspective views of the main parts, Figures 22 and 23 respectively show the configuration of the connection part, and Figure 22 is the main part. , FIG. 23 is an exploded perspective view, FIGS. 24 and 25 each show the paperless display section, FIG. 24 is a perspective view showing only the main part, and FIG. 25 is the main part. FIG. 26 is a side sectional view showing only the control system. 11...Paper feeding device, 12...Case body, 14...
・Cover, 15... Door, 15a... Rib, 16.
... Copying machine main body, 31.32 ... First and second side frames, 35 ... Mounting table, 49.50 ... Timing belt, 54 ... Spring, 55.58.70.71
...Gear, 66...Lever, 69...Rotator, 5
6.92.97...One-way clutch, 65...
Worm gear, 82...Motor, 90.91...Roller, 100...Switch, 102...Level detection member, 103...Paper out detection member, 106...Level detection sensor, 107...・Paper out detection sensor, 108
．． 109...first and second paper sensors, 119...
Light emitting diode, 120...control unit, 131.132
...Claw part. Applicant's Representative Patent Attorney Takehiko Suzue Figure 2 Figure 6 Figure 7 Figure 9 Figure 24 Figure 25 Figure 26

Claims (1)

[Claims] A large amount of material to be transferred is stored in the main body of the apparatus, and this material to be transferred is held by a mounting table that can be raised and lowered, and when the main body of the apparatus is attached to the image forming apparatus, the material to be transferred is placed in the image forming apparatus. A paper feeding device for supplying a transfer material includes a take-out means for taking out the transfer material placed on the placing table, and a take-out means for taking out the transfer material placed on the placing table provided near both ends of the take-out means. A paper feeding device comprising: a locking means that is locked to a corner of the sheet and separates a transferred material;