JPS63139833A - Paper feeding device - Google Patents

Abstract

PURPOSE:To optionally change a paper loading quantity so as to cope with a continuous large quantity feed by independently providing a paper feeding device separately from the body of a copying machine. CONSTITUTION:A paper feeding unit 30 on which sheets of paper are to be loaded is drawn out and arms 19b, 19c are brought into contact with the bundle of sheets of paper to restrain the position of the bundle of sheets of paper on a lifting base plate 12. Then, on detecting the existence of the sheets of paper, the lifting base plate 12 is automatically lifted up and the top face of the uppermost sheet of the bundle of sheets of paper is brought into contact with a paper feed roller 31. The delivery of the sheets of paper is carried out by the rotation of the paper feed roller 31, which is intermittently rotated by the command of the copying machine body to carry out delivery. The delivered sheet of paper is introduced to a double feeding preventing part to securely send out one sheet of paper. And, the sheet of paper which is separated to one sheet is advanced to a conveying passage 70, moved to a refeeding roller part provided on the copying machine body without stopping, and is temporarily stopped at the refeeding roller to correct the bending of sheet, and then, restarted at a proper timing according to the control signal of the body side of the copying machine.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a paper feeding device, and particularly to a paper feeding device that uses recording paper and is separate from a copying machine or the like.

[Prior art and its problems]

Generally, a paper feed device that supplies paper to a device such as a copying machine is incorporated inside the device such as a copying machine.

That is, as schematically shown in FIGS. 29 and 30, there are multiple paper feed cassettes 20 on the paper feed side of the main body of the copying machine.
0 is provided, and the sheets in this paper feed cassette 200 are sequentially fed based on instructions from the copying machine.

However, in the conventional paper feed cassette 200 as described above, the capacity is small (large + unsuitable for ILT copying);
If a paper feeder for 00 or more sheets is incorporated into the main body of a copying machine, the entire copying machine will become larger and there will be many problems with packaging, transportation, and installation. If the recording paper runs out, various inconveniences will occur, such as a shortage in the number of copies to be made or, if an automatic document feeder is used, a shortage in the number of sheets corresponding to the original.

In addition, since there is no elevating and lowering paper feeding table inside the paper feeding device, if you use only a multi-stage small capacity cassette, you will need to replenish paper frequently in the case of high-speed machines, which is a very complicated process. Was.

This invention solves the above-mentioned problems of the conventional copying machine, and by separating the paper feeding device from the main body of the copying machine, the amount of paper loaded can be changed arbitrarily, and it is possible to continuously print a large amount of paper. It is an object of the present invention to provide a paper feeding device that can handle paper feeding.

[Means for solving problems]

In order to solve the above problems, the present invention provides a paper feeding device that is removably installed on the paper feeding side of a device that uses recording paper, such as a copying machine, and the paper feeding device has an internal structure. Inside the main body, which is divided into at least two stages, there is an elevating paper feed tray that is raised and lowered by a drive source and on which a stack of paper is mounted, and the highest of the paper stacks on the upper part of the elevating paper feed tray. A paper feed unit that has a paper feed roller that comes into contact with the upper surface of the upper paper, a separation mechanism that separates the paper fed by this paper feed roller one by one, and the paper that is separated and fed by this paper feed unit. It has a configuration that includes a conveyance section that feeds the image to a copying machine or the like.

[Effect]

By adopting the above-mentioned means, this invention is easy to pack, transport, etc. as it is separate from the main body, and the upper surface of the elevating paper feed tray has various amounts and sizes. Since paper can be loaded, the size of the paper to be fed can be arbitrarily changed as necessary.

〔Example〕

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

FIG. 27 and FIG. 28 show a paper feeder B according to the present invention.
A general schematic diagram is shown, and copy 4! It is located on the paper feed side of the IA and has at least two paper stacks, such as three or four, and has a paper feed device B connected to the copying machine A as shown in FIG. 31. In this case, they are integrated and their height also decreases, and each paper feeding section in paper feeding device B is connected to the entrance of the recording paper conveyance path to the copying machine.
The paper located in each paper at section of paper feeder B is fed into the copying machine A.

Note that an automatic document feeder (ADF) 2 Q 1 is provided on the upper surface of the document table of the copy aA shown above.

Also, copy machine A and paper feeder i! The height of B and the length in the depth direction are the same, and when the copy mA and paper feeder B are combined, a useful plane is formed.

First, the entire paper feeding unit fiB will be explained. FIGS. 1 to 26 show the entire paper feeding device and each part of the paper feeding device according to the present invention. It is connected to the paper feed side, and the inside of the machine frame 2 assembled into a rectangular shape using a square vibrator l is divided into three stages: an upper stage, a middle stage, and a lower stage. Rail member interposed between 2 (Arculide rail)
3, a base +yi, 4 is provided to be movable between the front side and the back side in a horizontal state, and a stopper 5 is provided at a portion corresponding to each step on the back side of the machine frame 2.

As shown in FIG. ) 211 and a board 12 for placing Kawagi located on the top of this bottom plate 11.
is now placed.

This elevating unit 10 includes a flat bottom plate 11 supported by the upper part of embossed parts 6 protruding from four locations on the upper surface of the substrate 4, and supports protruding from the front and back sides of the 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 lO.
The rotation of the drive source 14 increases the
1 board 12 is raised and lowered, and during this raising and lowering, the raising and lowering board 12 is stopped at a predetermined raised position, that is, even if the drive source 14 is stopped, it is prevented from shifting from the desired raised position due to inertia. In order to do this, as shown in FIGS. 11 and 12, in order to immediately stop the rotation of the drive source 14 when the ascent and descent is stopped, there is a shaft on the drive shaft 14a that contacts the drive source and applies a load. A pulley 21 rotates together via a directional clutch 20, and a suppression lever 23 biased by a spring 22 presses against the circumferential surface of the boo IJ-21.

Further, a long hole 18 is bored in the elevating board 12, and three sets of arms 19a, 19b, l9c are provided that project upward from below through this long hole 18, and these arms 19a% 19b% 19c comes into contact with the front 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. .

And the elevating unit configured as above) 10
i! is placed on the upper surface of the board 4 which is disposed in the upper, middle and lower tiers of the machine frame 2, which constitute the main body of the paper feeder, so that it can be pulled out horizontally towards the front. In this case, as described above, the substrate is provided with four embossed portions 6, and the lifting unit 10 is located above each of the embossed portions 6, and one of the four embossed portions 6 A screw passing through the bottom +ff1ll of the lifting unit 10 is screwed into one of the two, so the lifting unit 10 can be moved horizontally with respect to the board 4 without being displaced vertically around this screw. Thus, it can be fixed to the substrate 4 at a desired position.

In addition, the board 4, which can be pulled out in the horizontal direction via a rail member (Arculide rail) 3 between the machine frame 2, is attached to both sides of the board 4, as shown in FIGS. 13 and 14. A roller 24 is rotatably disposed, and this roller 24
Rails 25a and 25b for guiding are provided on the machine frame 2.

That is, when the roller 24 is pushed in after being pulled out, it rides on the rails 25a and 25b, and the roller 24 rides on the rails 25a and 25b.
Of the rails 25a and 25b, the rail 25a located at the front in the paper traveling direction has a shape that almost matches the cross-sectional shape of the roller 24, and the rail 25b at the rear in the paper traveling direction is simply flat. The front rail 25a positions the paper in the traveling direction, and the rails 25a and 25b in the front and rear directions of the paper travel direction determine the vertical position.

Further, 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 10 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 interlocked 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 cylinder 27 is slidably fitted into the support cylinder 27, and the lower ends of the arms 19a and 19b at the front and rear ends are connected to the support cylinder 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 f2, and the cam 28a of the interlocking cam 28 has a mechanism for transporting the paper to the underside of the elevating base plate 12. The interlocking roller 29 for moving the rear end arm 19cG attached to the support tube 27 fitted into the slide pipe 26 is in the same direction as the direction! death,
Therefore, when the front end arm 19a is moved along the slide pipe 26, the interlocking cam 28 moves together with this movement, and the interlocking roller 29 located inside the cam 28a of the interlocking cam 28 moves against the elevating base plate 12. Since it is attached to the rear end arm 19c which is movable in the same direction as the paper conveyance direction on the lower surface, the rear end arm 19c also moves together with the front end arm 19a.
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 each of the upper, middle, and lower machine frames 2, there is provided an elevating board 12 of the elevating unit 10! ! 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 sheets from the topmost one.

That is, each paper feed unit 30 is a two-piece unit 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 double-feed prevention belt 38 stretched between the roller 36 attached to the roller 36 and another roller 37, a half-moon roller 39 that comes into contact with the upper surface of this double-feed prevention belt 38, and a shaft 40 of this half-moon roller 39. It is composed of a one-way clutch 42 that transmits transmission between the drive shaft 41 and a solenoid 43 that changes the transmission state of the one-way clutch 42.Furthermore, the shaft 35 driven by the drive source has a vertical swing. A movable arm member 44 is pivoted, and the front end of this arm member 44 is attached to the upper surface of the lifting board 12! A paper feed roller 31 is rotatably attached, and is rotatably attached to the paper feed roller 31, which is in contact with the uppermost position of the set of paper stacks. They can be interlocked by a member 45.

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

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 base Ifi 4 inside the machine frame 2, the roller 4a of the base plate 4 moves the other end of the lever 50 upward against the urging 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
4 and maintains a state in which it moves downward together with the top surface of the paper.

On the left side of the machine frame, as described above, there is a three-tiered paper feeding unit 30 that feeds the paper sent out 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 Hell 1-6 driven by
Each paper feed unit 30 is operated via the paper feeder 0.

Further, the plurality of gears rotated by the timing belt 60 driven by the drive set are located on the left side of the main body of the paper feeding device, that is, at a position connected to the copying machine A, as shown in FIGS. 9 and 10. The gear 62 of one of the plurality of f5 wheels can be meshed and engaged with the gear of the copying machine A when the paper feeding device is connected to the copying machine. 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 connected to a pair of upper and lower paper feed rollers, and are also connected to a pair of upper and lower paper feed rollers. 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 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 transport path 70 from the paper feed unit provided at each stage of the paper feed device to the pair of upper and lower paper feed rollers of the copying machine is connected to each paper feed unit 3 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. Since the paper transport path is formed by 71, the transport path 70 can be opened by moving this rotary plate 2).

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, has a slightly upwardly distal end, and has a pin 82 protruding from a portion that abuts the left end of the machine frame 2. , the pin 82 can be inserted into a hole 85 bored in the square vibrator 84 at the lower right end of the copying machine, and the part extending horizontally from the upper end can ride 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 8 is connected.
3 onto the square pipe 84 of the copying machine, the sheet feeding device can be positioned with respect to the copying machine in that state.

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 to collect a stack of paper, but if the paper feed units 30 in the three stages are pulled out at once, the paper stack is stored in a part of the paper stack. If it is in this state, the center of gravity may shift to the front side and the entire paper feeding device may fall over, so when pulling out the paper feeding unit 30, only the one at the back of the three-stage paper feeding unit 30 can be pulled out. It has no structure.

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 pins 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 portion that can be engaged with a pin 100, 101 that protrudes from the side surface.

The side surface of the lower end substrate 4 is in contact with the pin 102 of the arm 90 in the retracted state, and the arm 90
A rail 103 is provided on the side surface of the middle board 4 so that the hook portion of the arm 9 disengages from the pins 92, 93 of the upper and middle boards.
A rail 105 is provided on the side surface of the upper board 4 to disengage the hook part of the arm 94 from the pin 96, 97 of the upper board 4. When the pin 10 of the arm 98 is in the state
6 and the hook portion of the arm 98 releases the engagement with the pins 100 and 101 of the middle and lower boards.
7 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 111 is moved in and out to prevent movement of the board 4 by making it engageable with a locking guide 112 provided on the base ui, 4, and at this time, the micro switch 113 detects that the board 4 has been pulled out. Then, the solenoid 110 is activated.
It is also possible to control the inactivation.

FIG. 32 shows an overall block diagram of a control circuit for driving paper feeder B configured as described above.
The drive board of paper feeder B, which does not have a central control circuit, is composed of a sensor matrix input circuit, an LED display circuit, a clutch drive circuit, a tray lifting/lowering motor drive circuit, and a drive motor speed control circuit. The signals from the unit set detection member, the zero sheet detection member, the upper limit detection member, the lower limit detection member, the paper remaining amount detection member, and the two paper size detection members provided in the lifting unit 10 correspond to the three lifting units, respectively. l
In addition, the paper feed detection members of the three paper feed units 30 are connected to the sensor matrix input circuit, and the down switch of each lifting unit 10 is connected to the input circuit. LED is connected.

Further, a drive motor 61 is connected to the drive motor speed control circuit of the sensor matrix input circuit, a lift motor 14 is connected to the tray lift motor drive circuit, and a paper feed crack is connected to the clutch drive circuit.

Between the sensor matrix circuit connected as described above and the main body control board equipped with the central control circuit, the sensor human power signal is input from the sensor matrix circuit to the main body control board, and the sensor matrix circuit is input from the main body control board to the main body control board. A control signal is input to the circuit.

Next, to explain the operation of each part, first, a stack of 1000 sheets or more can be placed in each paper feed unit 30, and after pulling out the paper feed unit 30 to be placed, Adjust the side end arm 19b to the paper size position, push the paper stack against the back end 7-m 19b and the front end (left end) and move it 81CIl, and then move the arm 19a to the front end and rear end (right end) of the paper stack. , 19c, and the lifting board 12. The position of the paper stack is regulated in H.

Then, detecting the presence or absence of paper, the elevating board 12 automatically rises, and the upper surface of the uppermost sheet of the stack of sheets placed on the upper surface comes into contact with the paper feed roller 31 of the paper feed unit 30, and the paper When the position of the highest or lowest paper changes as the sheets are sequentially fed out, the elevating board 12 is automatically raised.

Further, when the paper on the elevating board 127 runs out, it is detected that there is no paper, and the elevating and descending board 12 is automatically lowered to notify the operator that there is no paper using a lamp or the like.

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

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.

Any method may be used as this separation means, but this paper feeding device employs a system that uses a double-feed prevention belt 38 and a stop roller to ensure separation in order to convey the top and bottom surfaces of the paper at different speeds. are doing.

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 elevating unit (10), but the paper feed unit 10 that is not in use is pulled out even if copying is in progress at the same time due to a signal from the copying machine. Paper can be replenished or replaced without interrupting copying.

In addition, if a jam occurs while feeding paper in each paper feed unit 10, the paper feed unit 10 is automatically lowered, making it easy to clear the jam. Since the rotary plate 71 is provided, it is possible to easily remove jams in the transport path 70.

Although each sheet feeding unit 10 has an individual lift drive motor 14, it may be driven by - number of drive motors via a reflatch.

Regarding paper feeding, a dedicated motor 6 is used to feed the paper through the paper feeding unit 30, pass through the separating section, and then proceed 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 body, and the paper is fed out intermittently, so that the conveying speed of the paper can be synchronized to any speed in accordance with the speed of the paper feeding main body.

That is, the driving of the lifting unit 10 is as shown in the flowchart shown in FIG. When the lifting board 10 is started and the upper surface of the paper reaches the uppermost position, the upper limit detection member detects the upper limit and the lifting stops, and if the paper is not being fed, the operator has not pressed the down switch. If there is no paper jam, the O-sheet detection member has detected the presence of paper, so the lifting motor 14 remains stopped, and the paper feeding unit 30 then operates. It feeds paper.

Furthermore, if the paper is being fed, the operator is pressing the down switch, or there is a paper jam, the lifting motor 14 will be lowered, and when the lower limit detection member detects it, the lifting motor 14 will be turned off. It stops and returns to the desired state, and when it descends, there is no paper jam.
If so, the lifting motor 14 remains stopped.

In the above embodiment, the case where the paper is supplied from the copying machine A at the paper feed side has been described, but the invention is not limited to this (for example, other devices that require paper, e.g. , a printer, a printing press, a facsimile machine, etc.

[Effects of the Invention] By configuring the present invention as described above, the present invention is constructed separately from a copying machine, etc., so combinations can be made freely according to the demand for variations in paper-loading types, and the copying machine Since it is independent from the main body, it is easy to pack and transport.Furthermore, if the whole is made larger, it is possible to diversify paper sizes and increase the capacity of paper loading. In addition to reducing the frequency of replenishment and achieving continuous large-volume copying, a dehumidifying heater can be installed only inside the paper feeder to keep the paper in good condition at all times.
This has excellent effects such as being able to carry out paper feeding work.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic perspective view showing an embodiment, 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. Vertical sectional views, Figures 6 to 8 show the front delivery side, Figure 7R6 is the front view, Figure 7 is the plan view, Figure 8 is the right side view, and Figures 9 to 1O are the back side. The feeding side is shown, Fig. 9 is a front view, Fig. 10 is a right side view, Figs. 11 and 12 are views showing the elevating drive source and its stopping mechanism, and Figs. 13 and 14 are attached to the board. Fig. 15 is a diagram showing the relationship between the roller and the machine frame,
Figures 16 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 feed unit, and Figure 1
9 and 20 are diagrams showing the relationship between the paper feeding unit and the paper feeding roller of the substrate 7, FIGS. 21 and 22 are diagrams showing the state of connection between the copying machine and the paper feeding device, and FIG. FIG. 22 is an enlarged view of the main parts, FIG. 24 is a diagram showing the locking mechanism of the board,
25 and 26 are diagrams showing other embodiments of the embodiment shown in FIG. 24, and FIGS. 27 and 28 are overall schematic diagrams of a separate sheet feeding device according to the present invention, and FIGS. 29 and 30. 3 is a schematic diagram showing a paper feeding device integrated with a conventional copying machine.
FIG. 1 is a schematic diagram showing a state in which a copying machine and a paper feeder are connected, FIG. 32 is an overall block diagram, and FIG. 33 is a flowchart showing the operation of the elevating unit. 1.84... Square pipe 2.32... Machine frame 3... Rail (Arculide rail) 4...
... Board 4a, 24.36.37 ... Roller 5 ...
... Stopper 10 ... Elevating unit 11 ... Bottom plate 12 ... Elevating board 13 ... Support plate 14.41.61 ... Drive Source 14a, 15.35.40...Axle 16.21.
...Pulley 17...Wire 18...Elongated holes 19a, 19b, 19c 90.94.98...Arm 20...Clutch 25a, 25b 103.105.107...Rail 26...
...Slide pipe 27... Support tube 28... Interlocking cam 28a... Cam 29... Interlocking roller 30... Paper feeding unit 31 ... Paper feed roller 33 ... Screw 38 ... Double feed prevention belt 39 ... Half-moon roller 41 ... Drive source 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 7I ... Rotating plate 80 ... Adjuster 81 ... Caster 82.92 .93.96 97.100.104.106...,...bin 83
...Connecting member 85 ... Hole 111 ... Lock pin 112 ... Locking guide 113 ... Microsinch 201 ... ...Automatic document feeder (ADF) Fig. 9 Fig. 11 Fig. 12 Fig. 13 Fig. 14 Fig. 15 Fig. 17 Fig. 19 Fig. 21 Fig. 22 Fig. 23 Fig. 273 King's drawing Fig. 29 Engineering drawing

Claims (1)

[Claims] A paper feeding device that is removably installed on the paper feeding side of a device that uses recording paper, such as a copying machine, and the paper feeding device has a main body that is divided into at least two stages, and includes: An elevating paper feed tray that is raised and lowered by a drive source and on which a stack of paper is mounted; a paper feed roller that comes into contact with the top surface of the uppermost sheet of the paper bundle on the upper portion of the elevating paper feed tray; A paper feed unit that has a separation mechanism that separates sheets of paper fed by a paper feed roller one by one, and a transport section that feeds the sheets separated and fed by this paper feed unit to a copying machine or the like are provided. A paper feeding device characterized by: