JPS63127933A - Paper feeding unit reversing mechanism for paper feeder - Google Patents

Abstract

PURPOSE:To make paper so as not to be broken even if it is left behind in a paper feeding part at the time of drawing out a paper mount, by installing a solenoid which reverses a direction of rotation of a semicircular roller to be driven by a driving source. CONSTITUTION:When a paper jam has occurred, a driving source of a paper feed belt 38 so far rotated clockwise for paper feeding is reverses, and if a driving source of the feed roller 31 installed in a conveying passage is being driven, a reversing solenoid 43 is operated, reversing a semicircular roller 39, and it feeds paper in reverse between the semicircular roller and the paper feed belt 38. And, when a paper detecting member has not detected the paper any longer, a timer operates as long as the specified time, and simultaneously with this, the driving source of the semicircular roller 39, the reversing solenoid 43 and the driving source of the paper feed belt 38 all come to a stop. Afterward, even if a lifting unit is pulled out toward your side, there is no paper being situated in the conveying passage, thus such a fear that the paper might be broke is utterly nothing.

Description

[Detailed Description of the Invention] C. Industrial Application Field] This invention relates to a reversing mechanism for a paper feeding unit of a paper feeding device,
In particular, the present invention relates to a reversing mechanism for a paper feeding unit of a paper feeding device, which is capable of reversing the paper feeding roller of the paper feeding unit of the paper feeding device and returning a sheet of paper that is being conveyed into the paper feeding device.

[Prior art and its problems]

Conventionally, in paper feeding devices that were operated from the side of the copying machine to feed paper, the ejecting direction was opposite to the paper conveyance direction, so the double feeding prevention mechanism Even if there was paper left in the paper, it was possible to remove it without tearing the paper.However, if the paper feeding device's paper loading table is drawn out in a direction perpendicular to the paper conveyance direction, the paper feeding If there is paper left in the unit, the paper may be torn when the paper loading table is pulled out, which has been a problem.

This invention solves the problems of the conventional devices as described above, and is applicable to a paper feeding device in which the paper mounting table for RM paper is orthogonal to the conveyance direction of the paper. To provide a reversing mechanism for a paper feeding unit of a paper feeding device that is free from the risk of tearing even if paper remains in a paper feeding part when pulled out.

Means for Solving Problem C] In order to solve the above problems, the present invention is configured separately from a copying machine, etc., and a plurality of sheets of paper are placed in the conveyance path. A paper feeding device that sequentially feeds paper to a copying machine or the like in a state in which
An elevating unit that lifts and lowers a stack of paper on the top surface can be pulled out in a direction perpendicular to the paper feeding direction, and a paper feeding unit is provided at the front end in the drawing direction, and this paper feeding unit is connected to a drive source. A paper feed belt driven by a paper feed belt, a half-moon roller that can come into contact with the upper surface of the paper feed belt and is driven by a drive source, and a solenoid that reverses the rotation direction of the half-moon roller, and A control circuit is provided, and this control circuit includes a paper detection member provided in the conveyance path, a paper jam detection member that detects the occurrence of a paper jam and issues a signal, and a lowering switch. When the paper jam detection member issues a signal in the middle of the paper, the soleroid of the paper feed unit is activated to reverse the half-moon roller, and the paper feed belt is also reversed to move the paper on the conveyance path to the lifting unit. Furthermore, when the lowering switch is activated, a solenoid of the paper feeding unit is operated in the same manner as described above to reverse the half-moon roller and the paper feeding belt to return the paper in the conveyance path to the lifting unit. ing.

[Effect]

By employing the above-mentioned means, when paper becomes jammed, this invention causes the paper jam detection member to actuate the members related to paper feeding in the opposite direction to the paper feeding direction and reverse the paper feeding direction, thereby causing the paper to become stuck in the conveying path. If you return the paper located at Since the paper is not located in the same position, there is no risk of paper tearing or the like.

〔Example〕

Embodiments of the invention shown in the drawings will be described below.

The drawing shows a reversing mechanism for the paper feeding unit of the paper feeding device according to the present invention. First, the entire paper feeding device will be explained. This paper feeding device is connected to the paper feeding side of copying machine A. The interior of the machine frame 2 assembled into a rectangular shape using square pipes 1 is divided into three stages: an upper stage, a middle stage, and a lower stage, and a rail interposed between the machine frame 2 and the lower part of the interior of each stage is divided into three stages: an upper stage, a middle stage, and a lower stage. A board 4 is provided so that it can be moved between the front side and the back side in a horizontal state by means of a member (Arculide rail) 3, and stoppers 5 are provided at parts corresponding to each step on the back side of the machine frame 2.
is provided.

Then, on the upper surface of the substrate 4 provided at each stage, a first
As shown in the figure, the bottom plate ll and this bottom plate! Paper located at the top of 1! An elevating unit 10 composed of a single elevating board 12 is placed thereon.

This elevating unit IO includes a flat bottom plate 11 that is supported at the top of embossed parts 6 that are protruded from four locations on the upper surface of the board 4, and supports that are protruded from the front and back sides of this bottom plate 11. The lifting board 12 has a lifting board 12 provided between the plates 13 and 13, and the lifting board 12 receives the driving force of a driving source 14 provided on the upper surface of the bottom plate 11 through a shaft 15 and applies it to a plurality of pulleys 16. It is possible to move up and down between the support plates 13 and 13 by being transmitted to the wire 17 passed over.

Furthermore, the driving source 14 for lifting/lowering is provided for each lifting/lowering unit 1G.
The lifting board 12 is raised and lowered by the rotation of the drive [14], and during this raising and lowering, the lifting board 12 is made to stop at a predetermined raised position.
Even if the drive source 14 is stopped, the rotation of the drive source 14 should be stopped immediately when the lifting stops, as shown in FIGS. 11 and 12, in order to prevent it from shifting from the desired raised position due to inertia. In order to contact the drive source and apply a load, a pulley 21 rotates integrally with the drive shaft 14a via a one-way clutch 20, and a pressing lever 23 is attached to the circumferential surface of the pulley 21, which is biased by a spring 22. is supposed to be pressed.

Further, a long hole 18 is bored in the lifting board 12, and three sets of arms 19a, 19b, and 19c are provided that project upward from below through this long hole 18.
a, 19 b, and l 9 c contact the front, back, and rear ends of the stack of sheets placed on the upper surface of the lifting board 12 of the lifting unit 10 to regulate the placement position of the stack of sheets on the lifting board 12. It is supposed to be done.

And the lifting unit 10 configured as described above.
are placed on the upper surface of the board 4 which is disposed in the upper, middle, and lower stages of the machine frame 2, which constitutes the main body of the paper feeding device, so that it can be pulled out horizontally toward the front side, and in this case, as described above, Four embossed portions 6 are provided on the board, and an elevating unit 10 is located above each embossed portion 6, and furthermore,
One of the four embossed parts 6 is screwed into a screw that passes through the bottom plate 11 of the lifting unit 10, so the lifting unit 10 is moved vertically to the board 4 around this screw. It can be moved in the horizontal direction without being displaced, and can be fixed to the substrate 4 at a desired position.

Further, the board 4, which can be pulled out in the horizontal direction via a rail member (Arculide rail) 3 between the machine frame 2, has rollers 24 rotatably disposed on both sides thereof.
Rails 25a and 25b for guiding this roller 24 are provided on the machine frame 2.

That is, as shown in FIGS. 13 and 14, when the roller 24 is pulled out and then pushed in, the roller 24
Of these rails 25a and 25b, the rail 25a located at the front in the paper traveling direction is the one that runs on the roller 2.
It has a shape that almost matches the cross-sectional shape of No. 4, and also,
The rail 25b at the rear in the paper traveling direction is simply flat,
Therefore, the front rail 25a can be used to position the paper in the traveling direction, and the rail 25a in the front-rear direction in the paper traveling direction can be used to position the paper in the traveling direction.
, 25b for vertical positioning.

In addition, arms 19a, 19b, and 19c that come into contact with the front, back, and rear ends of the sheet placed on the upper surface of the lifting board 12 of the lifting unit IO to regulate the position are shown in FIG.
As shown in FIG. 6 and FIG. 17, the lower end of the front end arm 19a and the rear end arm 1
It is designed to be linked with the lower end of 9C.

That is, the slide pipe 26 is installed at the lower end of the support plate 13.13 in a direction perpendicular to the paper conveyance direction.
A support tube 27 is slidably fitted into the support tube 27, and the lower ends of the arms 19a, 19b at the front and rear ends are connected to the support tube 27.

Further, an interlocking cam 28 is attached to the front end arm 19a located below the elevating base plate 12 on which the paper is placed. An interlocking roller 29 for moving the rear end arm 19c attached to the support tube 27 fitted in the slide pipe 26 in the same direction as the conveyance direction is located, so that the front end arm 19a is moved along the slide pipe. 26, the interlocking cam 2B moves along with this movement, and the interlocking roller 29 located inside the cam 2Ba of the interlocking cam 28 moves in the same direction as the paper conveyance direction on the lower surface of the elevating base plate 12. Since the rear end arm 19c is attached to the rear end arm 19c which is movable, the rear end arm 19c also moves together.
When the rear end arm 19c moves toward the rear end arm 19b, the rear end arm 19c moves forward in the sheet conveyance direction.

Therefore, the three arms 19 supporting the edges of the paper
Two of a, 19b, 19c 19a, 19c
can abut two edges of the paper, ie, the front edge and the rear edge, in one operation.

Further, on the upper left side of the upper, middle, and lower machine frames 2, there are L! ! A paper feeding unit 30 including a paper feeding roller 31 and the like is attached to each of the stacks of paper for sequentially feeding the stack of paper from the topmost one.

In other words, each paper feed unit 30 has two parts protruding from the rear side of the machine frame 32 of the paper feed unit 30 with respect to the machine frame 2 of the paper feed device.
The front side of the machine frame is fixed to the machine frame 2 via screws 33, and the main part is rotated by a shaft 35 driven by a drive source as shown in FIG. A paper feed belt 38 is stretched between a roller 36 attached to the roller 36 and another roller 37, and a double feed prevention roller is attached via a one-way clutch to press the bottom surface of the paper feed belt 38. 38a forms a paper feeding mechanism, and this paper feeding mechanism is provided with a reversing mechanism.

This reversing mechanism includes a half-moon roller 39 that comes into contact with the upper surface of the paper feed belt 38 and normally has a predetermined gap from the paper feed belt 38 due to the notch, a shaft 40 of the half-moon roller 39, and a drive shaft 40 of the half-moon roller 39. The controller includes a one-way clutch 42 that transmits transmission between the shafts 41 and a solenoid 43 that changes the transmission state of the one-way clutch 42, and further includes various sensors, timers, etc., which will be described later, located on the paper conveyance path. It consists of a circuit.

Further, an arm member 44 that can swing vertically is pivotally attached to the shaft 35 driven by the drive source, and this arm member 4
A paper feed roller 31 is rotatably attached to the front end of the paper feed roller 31, which comes into contact with the uppermost one of the paper bundles placed on the upper surface of the lifting board 12, and a shaft 35 rotated by the drive source. and the paper feed roller 31 can be interlocked with each other by a drive transmission member 45.

Further, the paper feed unit 30 configured as described above is removably attached to each of the three stages of the machine frame 2 of the paper feed device, and the paper feed unit 30 is provided on one side of the paper feed unit 30. A lever 5 for positioning the paper roller 31 upward via the arm member 44 to which it is attached.
゜ is provided.

That is, as shown in FIGS. 19 and 20, one end of this lever 50 is urged upward by a spring 51, and this one end can come into contact with the lower surface of the arm member 44, so that the lever 50 The other end is the lifting unit 10
protrudes into the movement area in the front and back direction of the board 4 on which the board 4 is placed,
Therefore, when storing the board 4 inside the machine frame 2, the roller 4a of the board 4 moves the other end of the lever 5o upward against the biasing force of the spring 51, so that one end of the lever 50 moves downward. As a result, the upward biasing force on the arm member 44 is released, so that the paper feed roller 31 moves downward together with the arm member 44 and remains in contact with the upper surface of the paper.

On the left side of the machine frame, there is a tray for feeding paper sent out from the three-stage paper feeding unit 30 configured as described above to the copying machine A arranged adjacently. A group of rollers forming a conveyance system is provided.

FIGS. 6 to 10 show the structure of the parts constituting the conveyance system, and the drive system for operating the paper feeding units 30 provided in the upper, middle, and lower stages is a drive source 61. timing belt 60 driven by
Each paper feeding unit 30 is operated via the.

Further, a plurality of gears rotated by a timing belt 60 driven by the drive source 61 are connected to the left side of the main body of the paper feeding device, that is, to the copying machine A, as shown in FIGS. 9 and 10. One gear 62 of the plurality of gears is capable of meshingly engaging with the gear of the copying machine A when the paper feeding device is connected to the copying machine A. However, the gear on the copying machine side is connected to a pair of upper and lower paper feed rollers, and the upper and lower pair of paper feed rollers are located closer to the image carrier of the copying machine than the paper feed rollers, and are not used for re-feeding. It is driven and connected by a belt to a pair of upper and lower paper feed rollers located closer to the paper feed device than the paper rollers (registration rollers).

Therefore, by simply connecting the paper feeding device to the paper feeding side of the copying machine, it is possible to reliably secure the driving force on the front side of the paper conveyance direction compared to the paper refeed roller (registration roller) of the copying machine. It is possible.

Further, as shown in FIG. 6, the conveyance path 70 from the paper feeding unit provided at each stage of the paper feeding device to the pair of upper and lower paper feeding rollers of the copying machine is arranged as shown in FIG.
A pair of rollers is provided for conveying the paper ejected from the roller 0, and a rotating plate whose upper end is pivoted in case the paper gets jammed between these roller pairs during conveyance. 71 forms a paper conveyance path, so the conveyance path 70 can be opened by swinging this rotary plate.

In addition, as shown in FIGS. 21, 22, and 23, there are two locations on the right side of the bottom surface of the machine frame 2 that constitute the main body of the paper feeding device, one on the front side and the other on the back side. An adjuster 80 that can adjust the height of the main body is attached, and a caster 81 is also attached, and the center part on the left side of the machine frame 2 is in contact with the lower surface and left end of the machine frame 2, and the upper end is A connecting member 83 that extends toward the machine side, slightly rises on the tip side, and has a pin 82 protruding from a portion where it comes into contact with the left end of the machine frame 2 is located. The pin 82 can be inserted into a hole 85 bored in the square pipe 84 at the bottom of the right end of the copying machine, and the part extending horizontally from the upper end rests on the top surface of the square pipe 84 of the copying machine. After the paper feeding device is placed adjacent to the copying machine, the connecting member 83 can be mounted on the square pipe 84 of the copying machine, and the paper feeding device can be positioned with respect to the copying machine in that state. There is.

In the above method, first, a predetermined amount of a bundle of paper is placed on the upper surface of the lifting board 12.

In this case, the paper feed units 30 located in the upper, middle, and lower stages are pulled out and the stack of paper is placed in R. However, if the paper feed units 30 in the three stages are pulled out at once,
In particular, if a stack of paper is partially stored, the center of gravity may shift to the front side and the entire paper feeding device may fall over.
The structure is such that only one of the stages can be pulled out.

That is, as shown in FIG. 24, a hook-shaped arm is provided on the side surface of each board 4 of the three-stage paper feeding unit 30, and the action of this arm allows only one stage to be pulled out at a time. .

That is, in FIG. 24, the left arm 90 is urged downward by a spring 91 and has a hook portion that can be engaged with the bins 92 and 93 protruding from the side surfaces of the upper and middle substrates 4. The central arm 94 also has a spring 9
The arm 98 on the right side is biased downward by a spring 99 and has a hook portion that can be engaged with pins 96 and 97 protruding from the sides of the upper and lower substrates 4. While being energized, the middle and lower substrates 4
It has a hook part that can be locked with a bottle 100, 101 protruding from the side surface of the bottle.

Then, on the side surface of the lower end board 4, there is a rail that comes into contact with the pin 102 of the arm 90 when in the retracted state, so that the hook part of the arm 90 releases the engagement with the bins 92, 93 of the upper and middle boards. 103 is provided, and the arm 94 is provided on the side surface of the middle board 4 in the retracted state.
A rail 105 is provided on the side surface of the upper substrate 4 to disengage the flanged portion of the arm 94 from the pins 96 and 97 of the upper and lower substrates 4 by contacting the bottle 104 of the upper substrate 4. The pin 106 of the arm 98 when in the retracted state.
rails 107 that come into contact with the hook portions of the arms 98 to release the engagement with the pins 100 and 101 of the middle and lower boards.
is provided.

Therefore, there is no possibility that the upper, middle, and lower substrates 4 will be pulled out at the same time.

Note that without using the arm 90.94.98,
As shown in FIGS. 25 and 26, the solenoid 110
The lock pin III is moved in and out to engage with the locking guide 112 provided on the board 4 to prevent movement of the board 4, and at this time, the microswitch 113 detects that the base 1 is pulled out. Activation/deactivation of the solenoid 110 may be controlled.

Next, to explain the operation of each part, first, each paper feed unit 30 holds a stack of more than 1000 sheets! !
1 is possible, and after pulling out the paper feed unit 30 to be placed, place the paper stack, and attach the arms 19a, 19b, and 19c to the front end, back end, and rear end (right end) of the paper stack. The position of the sheet bundle on the elevating board 12 is regulated by contact.

Then, the elevating board 12 automatically rises, and the upper surface of the uppermost sheet stack placed on the upper surface comes into contact with the paper feed roller 31 of the paper feed unit 30, and the sheets are sequentially fed out, so that the uppermost sheet stack is brought into contact with the uppermost sheet stack. When the position of the paper changes, the elevating board 12 automatically rises.

Further, the sheets are fed out by the rotation of the paper feed roller 31, and are sequentially fed out according to commands from the main body of the copying machine.

At this time, it is desirable to send out one sheet at a time, but sometimes multiple sheets may be sent out.

The fed paper passes through the double feed prevention section (separation section), i.e.
The paper feed unit 30 is configured integrally with the paper feed roller 31 and is detachable from the machine frame 2.
It is guided here, where it is separated from multi-fed sheets to ensure that only one sheet is sent out.

This separation means may be any method, but in this paper feeder, the paper feed belt 38 and the double feed prevention roller 38a are used to ensure the separation by varying the transport speed of the top and bottom surfaces of the paper. method is adopted.

The paper separated into one sheet advances along the conveyance path 70 and moves without stopping to a refeed roller section (registration roller section) provided in the main body of the copying machine. ), the copying machine stops once, the whitening of the paper is corrected, and then restarts at the appropriate timing based on the control signal from the main body of the copying machine.

The above operation is designed to feed paper in the same way for each lifting unit 10, but depending on the signal from the copying machine body, the lifting units 10 that are not in use even if copying is in progress at the same time.
0 does not interrupt copying even if it is pulled out, and paper can be replenished or replaced.

Furthermore, if a jam occurs during paper feeding in each elevating unit 10, the elevating unit 10 automatically descends, making it easy to clear the jam. 71 is provided, it is possible to easily clear a jam in the transport path 70.

Although each elevating unit 10 has a separate elevating drive source 14, it may be driven by - number of drive sources via a clutch.

Regarding paper feeding, a dedicated motor 6 is used to feed the paper through the paper feeding unit 30, pass through the separation unit, and then move the paper to the conveyance path 70.
1, and the paper feeding unit 30 is driven via a clutch.

The feeding timing is based on a signal from the main unit, and the paper is fed intermittently, and the conveying speed of the paper can be synchronized to any speed according to the speed of the paper feeding main unit. A paper jam occurs in the middle of the
When a jam occurs or when lifting/lowering unit 10 on which a stack of sheets is placed is pulled out, the above-mentioned reversing mechanism performs the following operations.

First, the case of a paper jam will be explained with reference to FIGS. 18 and 27. When a paper jam occurs,
A paper jam detection member (not shown) and a paper detection member (not shown) are provided in the transport path, so the paper detection member emits a signal when paper is being transported. If a paper jam occurs between the paper jams, a paper jam detection signal issues a signal.

Then, the drive source for the paper feed belt 38, which had been rotating in the normal direction to feed paper, rotates in the reverse direction, and if the drive source for the paper feed roller 31 provided on the conveyance path is driven, the solenoid for reverse rotation is activated. 43 is activated to reverse the half-moon roller 39 and transport the paper backwards between it and the paper feed belt.

Then, when the paper feed detection member no longer detects paper on the conveyance path, a timer is activated for a predetermined period of time, that is, for a predetermined period of time necessary for the paper to be fed backwards and reach the paper mounting table for the lifting unit 10. When the time has elapsed, the driving source for the paper feed belt 38 is stopped, the reversing solenoid 43 is reset, and at the same time the half-moon roller 39 is turned off.
This is to stop the drive source for driving the.

Next, a case in which the elevating unit 10 is pulled out will be described with reference to FIG. 28.

Further, when the lifting unit 10 is lowered, when the lowering switch on the operation panel (not shown) is turned on, the driving source for the half-moon roller 39 is activated, and at the same time, the reversing solenoid 43 is activated. , by reversing the drive source of the paper feed belt 3, the paper being conveyed is sent back to the paper mounting table, and when the paper detection member no longer detects paper, the timer is activated for a predetermined period of time. The timer stops the operation after a predetermined period of time has passed, and at the same time, the drive source for the half-moon roller 39, the reversing solenoid 43, and the paper feed belt 38 are stopped. Even if the elevating unit 10 is pulled out to the front, there is no longer any paper in the conveyance path, so there is no risk of tearing the paper.

Therefore, the flowchart for each of the above cases is as shown in FIG.

〔Effect of the invention〕

With the above configuration, the present invention is a paper feeding device in which a plurality of sheets of paper are positioned inside a conveyance path and fed sequentially, and a paper loading table on which a stack of sheets is placed is fed. Even in the case of a type that pulls out in a direction perpendicular to the paper direction, there is no paper remaining inside the conveyance path, so there is no risk of tearing the remaining paper when the lifting unit 7 is pulled out. It has excellent effects.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of the entire paper feeding device, Fig. 2 is a schematic plan view, Fig. 3 is a schematic front view, Fig. 4 is a partially cutaway schematic perspective view, and Fig. 5 is a schematic diagram of one stage. Longitudinal cross-sectional view, Figures 6 to 8
The figures show the front delivery side, Fig. 6 is a front view, Fig. 7 is a plan view, Fig. 8 is a right side view, Figs. 9 to 10 show the back delivery side, and Fig. 9 is a front view. The front view, Figure 10 is a right side view, Figures 11 and 12 are diagrams showing the lifting drive source and its stopping mechanism, and Figures 13 and 14 are the relationship between the rollers attached to the board and the machine frame. Figure 15, 1st
Figures 6 and 17 are diagrams showing the relationship between the lifting board and the arm, Figure 18 is a diagram showing the main parts of the paper feeding unit, and Figures 19 and 20 are diagrams showing the relationship between the board and the paper feeding roller of the paper feeding unit. 21 and 22 are diagrams showing the connection state between the copying machine and the paper feeder, Figure 23 is an enlarged view of the main part of Figure 22, and Figure 24 is the board locking mechanism. Figure 2 showing
5 and 26 are diagrams showing other embodiments of FIG. 24,
Fig. 27 is a time chart showing the operation of each member of the reversing mechanism when a paper jam occurs, Fig. 28 is a time chart showing the operation of each member of the reversing mechanism when pulling out the elevating unit, and Fig. 29 is a flowchart of the reversing mechanism. It is. ■, 84...Square pipe 2.32...Machine frame 3...Rail (Arculide rail) 4...
... Board 4a, 24.36.37 ... Roller 5 ...
...Stopper 10...'J descend, :L Knit 11...
・Bottom plate 12... Lifting board 13... Support plate 14.61... Drive source 14aS15.35.40-----Axle 16.21-
...Pulley 17...Wire 1B...Elongated hole 19a, 19b, 19c 90.94.98...Arm 20...Clutch 25a, 25b 103.105.107...Rail 2G...
...Slide pipe 27...Support cylinder 2nd...Interlocking cam 28a...Cam 29...Interlocking roller 30...Paper feeding unit 31...Paper feed roller 33...Screw 3 days...Paper feed belt 38a...Double feed prevention roller 39...Half-moon roller 41 ... Drive shaft 42 ... One-way clutch 43.110 ... Solenoid 44 ... Arm member 45 ... Drive transmission member 50 ... ... Lever 51.91.95.99 ... Spring 60 ...
... Timing belt 62 ... Gear 70 ... Conveyance path 71 ... Rotating plate 80 ... Adjuster 81 ... Caster 82.92 .93.96 97.100.104.106... Bin 83.
...Connecting member 85 ... Hole 111 ... Lock pin 112 ... Lockle guide 113 ... Micro switch Fig. 9 Foil Fig. 11 Fig. 12 Fig. 13 Fig. 14 Fig. 15 Fig. 16 Fig. 17 Fig. 19 Country Fig. 21 Fig. 22 Fig. 23 Fig. 27 Fig. @28 Fig. E first J. Figure 29

Claims (1)

[Claims] A paper feeding device that is configured separately from a copying machine, etc., and sequentially feeds paper to a copying machine, etc. with multiple sheets of paper positioned in a conveyance path. The elevating unit can be pulled out in a direction perpendicular to the paper feeding direction, and a paper feeding unit is provided at the front end in the drawing direction. It has a half-moon roller that can come into contact with the upper surface of the paper feed belt and is driven by a drive source, and a solenoid that reverses the rotation direction of the half-moon roller, and is provided with a control circuit. has a paper detection member provided in the conveyance path, a paper jam detection member that detects occurrence of a paper jam and issues a signal, and a lowering switch,
When the paper jam detection member issues a signal during paper feeding,
The soreloid of the paper feed unit is actuated to reverse the half-moon roller, and the paper feed belt is reversed to return the paper in the conveyance path to the lifting unit, and when the lowering switch is actuated, the same as above A reversing mechanism for a paper feeding unit of a paper feeding device, characterized in that a solenoid of the paper feeding unit is actuated to reverse the half-moon roller and the paper feeding belt to return the paper in the conveyance path to the lifting unit.