JPS5978024A - Paper supply device - Google Patents

Abstract

PURPOSE:To provide a feasible paper supply device with high reliability by releasing the inhibition of paper supply-transfer operation to a transfer section with a connection detecting output of a connection detecting means of a paper processing device and the paper supply device. CONSTITUTION:When blanks are set on a receiving bed in a large volume blank receiving section 1 and a cover 85 is closed, a door switch 852 is closed to make a lifter motor for the receiving bed drivable. Next when a paper supply device A is coupled with a recorder body B, a joint switch 803 is operated so that by a signal of said switch a control unit of CPU drives the lifter motor to lift the uppermost blank on the receiving bed until a UP level sensor 809 is operated. And when blanks are not found in paper sensors 806, 807, a transfer roller is driven to carry out a predetermined transfer. Thus, when a processing unit and the paper supply device are not interconnected, the paper supply is inhibited to provide paper supply performance with high reliability.

Description

[Detailed description of the invention] Technical field The present invention relates to a paper feeding device that supplies paper to a paper processing device.

PRIOR ART Conventional paper feeding devices are designed to immediately transport paper fed to a transport section of a paper processing device, and are therefore used exclusively for paper processing devices. In addition, in a paper feeding device that is equipped with a rail stand between the paper feeding device and the paper processing device to provide versatility, the paper is transported to the transport section of the paper feeding device before the paper feeding device and the paper processing device are connected. If the paper is conveyed and held, the paper may be moved or damaged when the paper feeding device and the paper processing device are connected, resulting in a failure in feeding the paper to the paper processing device.

Purpose The present invention has been made in consideration of the above point 6, and is applicable to various paper processing devices by prohibiting feeding of paper to the holding section when the paper processing device and paper feeding device are not connected. The purpose of the present invention is to provide a paper feeding device that enables combinations and highly reliable paper feeding performance.

Embodiment In this embodiment, a paper feeding device (6) for feeding paper to a paper processing apparatus is shown. The external appearance and configuration diagram of the paper feeding device of this embodiment are shown in FIGS. 1 to 4, and a partially enlarged view is shown in FIG. 5. Further, a detailed diagram of the main control section is shown in FIG. 6, a detailed diagram of the control section of the rifuku motor Ml is shown in FIG. 7, and a timing chart thereof is shown in FIG. In addition, control flowchart 1 of the control unit CPU of this embodiment.
Embodiments of the present invention will be described with reference to the following drawings, which are shown in FIGS.

Outline configuration, usage, and functions of this embodiment.

The paper feeding device of this embodiment is broadly divided into a large paper storage section (hereinafter referred to as a part of the lifter) capable of loading and storing a large number of sheets, for example 2000 sheets, at a time, and a part of the lifter. It consists of a conveying section that takes out and conveys sheets of paper one by one and holds the conveyed sheets.

A portion of the liter has a built-in elevating paper storage mechanism (lifter mechanism), a paper feeding mechanism for each sheet of paper, and a control circuit.

In the Rifuku mechanism, 13a and 13b are transversal U-shaped channel rails arranged vertically facing the side covers, ■ is a middle plate that serves as a paper storage stand, and -. 1-unpaired rollers 12a, 12 in each direction
b is attached to the shaft. A pair of rollers on each of the left and right sides are arranged inside the side cover to form a recessed vertical channel rail 13a.

13bI7) Fit and engage inside 9M. Therefore, the middle plate 1 rests on the rails 13a and 13b and can freely move upward. 853 beam 2 The handle is held at the bottom of the lid motor Ml, and the lift motor Ml (853)
A sprocket 4 is fixed to the drive shaft. Moreover, the lifter middle plate 1 is latched and connected to longitudinal chains lla and llb, and the chains l 1 a , ], 1 b
is suspended between a rotating shaft 7a, 7b (not shown), 10a, and a fob attached to both ends of a rotating shaft 8 and 9 (not shown). In addition, the rotating shaft 8 on the left side protrudes to the outside of the side cover, and the sprocket 6 is attached to the protruding shaft 81 (via the one-way clutch 6a).
A chain 5 is suspended between the sprockets 4, and the rotational force of the lift motor Ml (853) is applied to the sprocket 4.
→ Chain 5 → Sprocket 6 → One-way clutch 6
The transmission is transmitted to the lower rotation @II8 through a, and the left and right 8kt) 51ii1 chain ll is transmitted through sprockets I, 7a and 7b (not shown) fixed to the rotating shaft 8.
a, llb and drive the lid middle plate l.

813 in Fig. 3 is a holding solenoid equipped with a pawl plate that extends in the direction of engagement with a stopper ratchet float fixed to the rear end of the rotating shaft of the lid motor Ml (853), and the suction action of this solenoid causes the The pawl plate is captured by the ratchet gear to allow rotation of the morph rotation axis. Holding solenoid ffl+clj is engaged, and lifter motor M
Prevents idle rolling of the rotating shaft (853). This prevents the middle plate l in the holding position from sliding down due to the self-gravity of the paper loaded on the lifter motor Ml (853), causing the rotating shaft of the lifter motor Ml (853) to idle. The plate 1 is held stably in the raised position.

Reference numeral 14 denotes a paper sensor lever rotatably supported by a bearing on the side plate, and its details are shown in Figures 1 and 5.

The protrusion 14c of the arm of the sensor lever 14 normally comes into contact with the upper surface of the stacked sheets on the intermediate plate l, and detects that the sheets are within a predetermined position level range PH-PL. Sensashi/"knee 14 arm base number"-direction protrusion 14a
There is Remix Switch 854 facing this protrusion,
On the middle board 1! This is to detect that the j1 or urayo range has been exceeded. Also, the bearing holding ta of the sensor lever 14 is
At s t < there is a projection γ7R for cutting off the optical path of the UP level sensor 809 for detecting the second position of the sheet, and the upper surface of the sheet monitors the lowest position PL of the predetermined position level range PH-PL.

When the sheets stacked on the middle plate 1''2 are sequentially fed out one by one from the top by the operation of a paper feeding mechanism to be described later, the position of the L side of the stacked sheets gradually lowers. Following this, the sensor lever 14 gradually tilts and rotates. Then, when the position of the 4-1 side of the paper reaches the permissible lower limit level (PL), the optical path of the UP level sensor 809 becomes open, and it is detected that the position has fallen to the permissible lower limit level. Based on this signal, the holding solenoid is driven via the control circuit, and then the above-mentioned lift motor Ml (85
3) is driven for a certain period of time to align the middle plate l in two rows, and return the paper to the eye position PH, which allows for a two-sided position. As the stacked paper continues to be consumed, the intermediate plate 1 also repeats intermittent -I-■, and when the last sheet of paper on the intermediate plate 1'' is fed, the downward protrusion 14c of the sensor lever 14 is moved. The tip of the other downward protrusion 14b of the sensor lever 14 falls into the through hole 1a formed at the surface corresponding to the protrusion 71i of the intermediate plate 1, and the tip of the other downward protrusion 14b is in contact with the intermediate plate 1; the optical path of the UP level sensor 809 is in an open state. becomes. At this time, the paperless switch 805 has already been placed on the middle plate l.
It is actuated by a cam 100 attached to the I7x.

Here, the paper out switch 805 is lower than the height when there is only one sheet of paper on the middle board 1i, and the paper out switch 805 is
The level sensor 809 operates within the height range where the optical path of the level sensor 809 is closed by the last sheet of paper on the intermediate plate 1, which is the height of the intermediate plate 1 at which the level sensor 809 is detected. This paperless switch 8
Middle plate 1 due to the 05 i iris and the UP level sensor 809 signal.
Detects that there is no paper loaded on top.

Next, the transport section 3' (explained). The transport section is driven by the transport motor M2 (815) which is mounted and held at the bottom of the chassis. The drive shaft of the transport motor M2 (815) is equipped with a sprocket 6. In addition, a swimming pulley 8,
A carrier 18b and a clock disk 18a are integrally connected concentrically and are supported to rotate freely, and a timing belt 17 is installed between the sprocket 16 and the timing pulley 18.
This is a matter of concern.

Reference numeral 21 denotes a paper feed drive shaft rotatably disposed on the second part of the chassis side plate, and a paper feed sprocket l-20a is attached to the drive shaft via a one-turn clutch 20. The paper feed sprocket 20a meshes with the sprocket 18b. As a result, the rotational force of the transport motor M2 (815) is transmitted from the pulley 16 to the timing bell I/17 to the pulley 18.
18b, the clock disk 18a is rotationally driven together with the paper feed drive shaft 21. In this case, when the outer ring of the one-turn clutch 20 is being ejected by the pawl arm whose swing is controlled by the paper feed solenoid 811, the connection with the paper feed drive shaft 21 is released, and the sprocket 20a is rotated. is not transmitted to the paper feed drive shaft 21.

In this case, the paper feed solenoid is sucked and the claw arm
When the outer ring of the rotary clutch 20 is released, the clutch 20 becomes connected to the paper feed drive shaft 21 and rotates the paper feed drive shaft.

In addition, the sprocket l-18b is engaged with the sprocket 19 mounted on the shaft which is rotatably received on the side of the chassis, and the sprocket 19 is similarly rotatably mounted on the side of the chassis. It is meshed with a sprocket I.31 attached to a bearing shaft via a one-way clutch 31a. The one-way clutch 31a is rested on a pawl arm whose swing is controlled by a conveyance solenoid 812. Transport' X Tsure, Noi F'
When the sprocket 812 is driven and in the suction state, the sprocket 31 is kept uncoupled from the shaft, and the sprocket 131 is idling on the shaft 1-. When the conveyance solenoid 812 is in a non-suction state, the pawl arm escapes from the one-way clutch 31a, the shaft and sprocket are connected, and the shaft is driven to rotate. A sprocket 32 is also attached to this shaft, and the rotation of the sprocket 32 is transmitted via an idler 32a to a sprocket 33 attached to the shaft on which the conveyance roller 27 is attached, causing the conveyance roller 27 to rotate. Further, this rotational force rotationally drives a conveyance roller 42a at the tip of the conveyance section via the timing belt 40.

Conveyance 81: There is a paper size support cam 46 at the tip, and rotation of 46a exposed on the outer surface of the chassis plate drives a paper size detection switch 831 to detect the set paper size.

FIG. 7 is a circuit diagram of the main control section 801.

802 is a control unit C'PU, and the CPU 802 receives sensor signals from various sensor units and signal outputs from the drive system.

The operation of this embodiment will be described below with reference to the control flowchart i.

When the paper feeding device is powered on, the CPU 802 of the main control unit executes the lift lowering control progera 1 and DCTL (step 10
70 or later). In this case, the paper cover is opened to set paper, or the paper feed device is not connected to a paper processing device.

Next, set the paper on the middle plate 1 and close the cover. Power/
When door switch 852 is closed, the door switch 852 changes from position b to position a shown in FIG. (
85j) and the transport motor M2 (815) become capable of driving Uf.

At the same time, the signal is input to the CPU 802 via the receiver 817 as a door switch signal. Next, by connecting the paper feed device to the recording device main body, the joint switch 803
is activated, and this signal is sent to the control unit C via the receiver 817.
It is input to PU802. In the control unit CPU 802, when the joint switch input is input, the lifter motor M
l (853) until UP level sensor 809 is activated J:! J- and i of the intermediate plate 1 are performed according to the control flow UCTL (step 1090 and subsequent steps). -1=-1 In the control flow UCTL, if the middle plate l is descending (step 1
091-Y) The lowering of the middle plate 1 is stopped by the lowering stop program (step 1083 and subsequent steps). If the middle plate 1 is not being lowered (step 1091-N), the middle plate 1 is moved by J- and JA until 805 is activated. To move the middle plate L up A, drive the holding solenoid 5L3 (813) and release the lock of the lifter motor M1 (853) (Step 1095), and after an arbitrary period of time (for example, 150 m5) has elapsed after the release (Step 1098). Lifter motor Ml (853
) to enter the upper A mode (step 1100).

Lifter motor Ml (853) (7) Drive CP U3
FL output from 02 via drivers 827 and 828
6 M I B K / ON and 'MIDWN/U
This is done by the P signal.

MIBK10N to the lid motor M1 control section 851
When signal (7) M 10 N (L OW rehe) Iy> is input, the 1/seiver 855G output becomes HIGH, and the outputs of brake drive ICs 855c and 855f become LO.
The signal becomes W level, the brake drive I transistors 868 and 879 are turned off, and the brake of the motor Ml is turned off. At this time, if the MIDWN/UP signal is UP (
LOW level) The output of the lower drive IC 855e becomes HIGH, and the output of the first drive IC 855b becomes LOW after the time set by the time constant of the resistor 858 and capacitor 859 has passed, and the W drive transistor 864 turns on.

+24V to X of motor Ml via transistor 863
At the same time, the i-transistor 881 is turned on via the transistor 864 and the resistor 873. As a result, current flows through the lifter motor Y through the limit switch 854 and the transistor 881, and the lifter motor M1 (853) rotates in the upward direction. The rotational force of the lifter motor M1 (853) moves the middle plate 1 upward according to the above-described process, and when the paper on the middle plate 1 pushes -14 toward the sensor tray, the UP level sensor 809 is activated.

When the tJP level sensor 809 is activated, the output signal of the UP level sensor 809 is sent to the CPU 8 via the receiver 817.
Manually operated to 02. In the CPU 802, when the UP level sensor 809 is activated (step 1092-Y) - after a certain period of time (50 m5 in the example) has elapsed (step 1104)
Lifter motor Ml (, 853) is stopped (step 1105).

The time after which the motor stops rotating (150 m in the example)
5) After the elapse of time (step 1109), the holding solenoid 81
3 to 0FFL (step 1llo) and lock the lifter. Also, when the paper out switch is activated, the upper R of the middle plate l is similarly stopped.

Here, the operation of the lifter motor M1 control circuit 851 when the lifter motor M1 (853) STOP+J2 signal, ie, the MIBK signal, is output will be described. Said circuit 8
The MIBK10N signal from the main control circuit 801 of 51 becomes the motor brake level (HIGH level) and the motor drive ICs 855b and 855 on the output side of the receiver 855G
The input of e discharges capacitors 859 and 883 of the time constant circuit through diodes 884 and 885, and becomes LOW.
level. Therefore, the transistor 863°s64.
872 and 874 are in the OFF state, and the +24 V ffi source is no longer supplied to the lifter motor M1 (853). In addition, brake drive IC855C and 85
The output of 5f becomes (IGH level, delayed by the time constant of resistor 870 and capacitor 869, and resistor 877 and capacitor 878)・Transistors 868 and 865
By driving 879 and 881, both poles X and Y of lifter motor Ml (853) are short-circuited. Therefore, since the lifter motor Ml (853) consumes the electromotive force generated during rotation, strong braking can be applied.

The lifter has now stopped at position 1a, where paper can be fed and transported. In this state, the CPU 802 detects that there is no paper at the paper sensor 1 (806) position in the transport section, and the paper out switch 805 is activated. If not, paper feed control flow K
YUSI (step 1030) is executed to feed paper.

First, the conveyance motor M2 (815) is driven via the driver 826, and the paper feed solenoid 5LI (811) is driven via the driver 822 (step 1031).

When the paper feed solenoid 5L1 (811) is driven, the one-turn clutch 20 is activated and the paper feed drive shaft 21 is rotated. At this time, the transport solenoid 5L2 (812) is activated. (The reason is shown in FIG. 9.) Here, the paper feed solenoid 5LI (811) is turned off after a sufficient time (100 m5 in the embodiment) for the stopper of the one-turn clutch 20 to disengage (step 1 O32). Step l O
33). Therefore, the paper feed drive shaft rotates only one rotation, and one sheet of paper is set on the conveyance roller 27 via the paper feed roller. When the paper is set on the transport roller 27 (step 1011-Y), if there is no paper in the paper sensor 2 (807) (step 1016-N)! Transmission control flow HAN
SO (step 1120 onwards) is executed. In the conveyance control flow HANSO, if there is no paper in the paper sensor l (806) and the paper sensor (807), first the jam timer of the conveyance system is set (300m5 in the example) (step 112).
3). Paper size selection switch 8 to transport the paper next.
5WI (819) or 5W2 (8
Stop pulse meter q data (I8~
l1l) is read by the CPU 802 and the stop clock is set to the old 9
(step 1124). Next, transport motor M2 (81
5) and transport solenoid 5L2 (812)
is in a non-suction state, and the rotational force of the conveyance motor M2 (815) is applied to the first general feed roller 27 via the one-way clutch 31a.
and 42a to start conveying the paper (step 1125). When paper is conveyed to paper sensor 1,
At the same time as resetting the jam timer, the jam timer is reset from L-new sensor 1 to sensor 2 (300 m in the example).
s) (step 1137). paper sensor l
When the paper is conveyed to the paper sensor 2, the jam timer is canceled and the next jam timer (in the example, 70 m s
) is set (step 1135), the flock sensor 808 detects the slit in the clock disk 18a attached to the pulley 18, converts it into a clock pulse, starts pulse counting (step 1136b), and turns off the lamp 814 (step 1135). Step 1136a). When the pulse reaches the number of stop clocks (step 1130) 1
12 feed solenoid 5L2 (812) is turned on (step 1131), paper conveyance is stopped and 1 paper is placed at the specified position 1a.
I will write to W.

If the predetermined number of stop pulses do not arrive even after the time set in the stop pulse abnormality timer has elapsed, or if the paper does not reach sensor 1 and sensor 2 within the specified time from the start of transport, the transport drive system Since a malfunction is suspected, the system is set to flicker mode.Step 1139) Stops the transport motor.Step 1140) Suctions the 1ffJ feed lens.Step 1141) Stops the transport drive system.

Here, the conveyance motor M2 (815) waits for the maximum time of the sheet feeding interval time during continuous conveyance (for one second in the example) and then stops (step 1132). After that, the transport solenoid 5L
2 (812) is turned off (step 1021). When the conveyed paper is taken out from the conveyance section and there is no paper at the paper sensor 1 position, the paper feed control flow is executed.Subsequently, when there is no paper at the paper sensor 2 position, the same conveyance control flow as described above (HANSO )repeat.

When the number of sheets of paper is conveyed, the level sensor level 14 decreases, and the UP level sensor 809 stops operating (
Step 1007), ii''-1 control (Step 1
090 onwards) and return to the upper position P of paper feed 0 process again.
Let it be H.

Due to malfunction of the main control circuit or motor control tj circuit, etc.
The center plate (1) is above the allowable range” - To prevent the device from being destroyed if the device is lent, if paper is loaded on the center plate (1), please check the protrusion 14C on the sensor/receiver plate (14C), if not. is 14
An abnormal rise is detected at point b, and the upward protrusion 14a at the base of the arm of the sensor lever 14 operates the limit switch 854 to cut off the drive power source for the lifter motor M1 (853). Furthermore, when the limit switch 854 is activated while the lifter motor Ml (853) is in A, the switch 854 is opened, and both switches 41fp have +2
A potential difference of 4■ is generated. This potential difference is reported to the CPU 802 via the diode bridge 887 as a rising abnormality signal via the photocoupler 829 of the main control circuit. C
When the PU 802 detects an abnormal rise (step 1052
) The MI DWN/UP signal is set to DWN via the driver 828 (step 1053). Then, after a certain period of time (100 m5 in the example) has passed (step 1054), the overrun occurs - a certain number of times (in the example 10 seconds)
8 times in the example) - If this occurs, stop the paper feeder 1 -
(steps 1057 and 1058). Next, if the middle plate 1 is lowered and abnormality is canceled and the UP level sensor is at position N, the -JJf control is terminated (step 1).
080-1063), when the middle plate l is lowered below the UP level sensor position 1Tf, the beam lid motor Ml (8
53) is driven by one load (Step 1061), and the upper A control is restored again, and at the same time, the number of times the abnormal state is counted is reduced, thereby canceling the abnormal state that naturally occurred.

As a result, even if the limit switch 854 malfunctions due to paper flapping or the like, normal paper feeding and conveyance can be maintained.

A diode 886 is connected in parallel to the limit switch 854, and a lid motor M1 (853) is connected to both poles of this diode. During 11 rotations, -1-24V is applied to the cathode side of the diode and GND is applied to the anode side, so when the limit switch is open, a potential difference of 24V occurs between the two poles of the diode, and this potential difference is The diode bridge 887 detects excessive lifting of the lifter. However, when the lifter motor Ml (853) is rotating downward, the cathode side of the diode 886 is connected to GND, and the anode side is connected to +24.
Since V is applied, only a small potential difference occurs between the two poles of this diode. For this reason, diode bridge 887
The output of remains OFF, even if limit switch 8
Even if 54 malfunctions and the contact becomes open, no malfunction will occur. Furthermore, when the brake signal is output to the lifter motor Ml (853), both the anode side and the cathode side are at GND potential, and even if the limit switch 854 malfunctions, the diode bridge 8
The output signal of 87 remains OFF, indicating an abnormality in the middle plate.
Detecting H will not cause malfunction.

When all the paper on the middle board 1 is fed, the sensor lever 14
c falls into the detection hole 1a of the middle plate l'-, and at the same time the paperless switch 80 is installed in the position and has already been detected.
The output of 5 is also input to CP-U2O5 via receiver 817. The CPU 802 controls paper sensor 1 (8) in the transport section.
06) and paper sensor 2 (807) when there is no paper left, the lamp 814 is turned on to notify that there is no paper left.

When the paper cover is opened or the paper feed device is pulled away from the recording device or the like, the door switch 852 or the joint switch 803 is activated, step 1006), and the descending control flow DCTL (step 1070 onwards) is executed. When the CPU 802 enters the do1 control flow, the CPU 802 first sets the flicker mode to step 1071) lights up the lamp 814 and drives the transport solenoid 5L2 (812).
5) is stopped for 1 unit (step 1074). Next, the lifter requests to stop the ascent.
75-Y (from step 1105), and when the lifter is in the lowest position, the LOW level switch 804 operating position, the lifter lid motor Ml (853) is stopped (step 1083), and then the holding solenoid 5L3 (81
3) and transfer solenoid 5L2 (812) to 0FFL,
Lock the lifter motor Ml (step IC1
86).

If the lifter has not descended to the LOW level switch 804 activation position (step 1076-N), first drive the holding solenoid 5L3 (813) in step 107.
9), The lifter motor M1 (853) is unlocked, and then the CPU 802 connects the driver 8 to the M1 control circuit.
27, 828 to output the MION signal and the MIDWN signal (step 1081). After that, the second timer is set for 10 seconds.If the lifter does not finish dropping even after 10 seconds, the driver 83
0, the buzzer sounds, the LED 810 lights up, and the operation is stopped (step 1057).

Here, when the MION signal (LOW level) is input to the M1 control circuit 851, the output of the receiver 855G is turned OFF.
(HIGH level), and the brake drive IC855
The brake driving l/run lipors 868 and 879 are turned OFF via the pins c and 855f, and the brake is released. At this time, the up/down signal MIDWN/UP signal is MIDW
When N (HIGH level), the output of the register z<855a becomes LOW level, the charge of the capacitor 859 is discharged through the diode 857, and after the discharge is completed, the upper l drive IC
The output of 855b becomes HIGH, which turns off the lifting transistor 863 and lifter motor Ml(
853), no upper E mold pressure is applied. Also IC85
When the output of 5a becomes LOW level, IC855
The output of IC 855e becomes HIGH level and is charged to capacitor 883 via resistor 882, and after a time delay in charging, the output of IC 855e becomes LOW level.

As a result, the base current of the lowering transistor 874 flows, and the lowering driving transistor 872 becomes conductive (ON), supplying +24V power to the Y of the lifter motor M1 (853) via the remix switch 854 or the diode 886. In addition, the collector current due to the transistor 874 being turned on flows to the transistor 865 through the resistor 867.
ONL, lifter motor Ml (853) X to GN
It is set as D level. This causes lifter motor Ml (8
53), the GND level is applied to X, and +24v is applied to Y, causing the Liptor motor Ml to rotate in the downward direction and lower the lifter.

The lifter descends and the cam 100 attached to the middle plate l
activates the LOW level detection switch 804 (step 1076-Y), the MION (e signal is changed to the MIBK signal and the lifter motor M1 (853) is stopped (
step 1083).・When the motor stops rotating after that! After 1JI (350m5 in the example) (step to8
4) Holding renoid 5L3 (813) OF F +,
to fix the middle plate 1. If the rifuku descends too much due to an abnormality in the LOW level switch 804, the middle plate 1 will hit the bottom plate, but the one-way clutch 6a installed on the drive transmission sprocket 6 will cause the drive rotation to idle, protecting the equipment from destruction, and it will last for 10 seconds. An abnormality is detected by the timer and motor drive is stopped.

In addition, as shown in Fig. 112, a middle plate sensor array -1001 and a level sensor 1001 are rotatably connected on the same shaft, and their sensor positions are detected by detection parts 805' and 809'.
When the sensor 805' is in the light shielding state and the sensor 809' is in the transmitting state, it is determined that there is no paper, which has the effect of eliminating the need to adjust the position of the paper out switch 805 and the UP level sensor.

Further, in this embodiment, a paper feeding device to a paper processing apparatus has been described, but even if the material of the paper is not one sheet, as long as the paper has a paper-like shape, it is possible to feed one sheet at a time in exactly the same way. It goes without saying that it can also be used as a feeding device for devices other than paper processing devices that need to use one sheet at a time.

As explained in ``Effects'' 2, reliability can be improved by prohibiting paper from being fed to the conveyance unit when it is not connected to the paper processing device, and stopping only operations that would cause problems when operated independently. A high-quality, easy-to-use paper feeding device has been realized.

[Brief explanation of the drawing]

Figure 1 is an external view of an embodiment of the present invention, Figure 2 is a sectional view showing an overview of the mechanism, Figure 3 is a diagram showing the beam-lid mechanism, Figure 4 is a diagram showing the conveyance mechanism, and Figure 5 is a diagram showing the mechanism. Sensor lever structure diagram? Figure 36 is the main control circuit diagram, Figure 7 is the lifter motor control circuit diagram, Figure 8 is the beam lid motor control timing chart, Figures 9-
FIG. 11 is a control flowchart of the control unit, and FIG. 12 is another configuration diagram of the sensor lever and paperless switch. In the drawings, l...Middle plate, 6a, 31a...One-way clutch, 14...Sensor lever, 18a...
・Clock disk, 20...1 rotation clutch, 46...
・Paper size support cam, 46a...Paper size support knob, 801...Main control circuit, 802...CPU, 80
3... Joint switch, 809... UP level sensor, 811... Paper feed solenoid, 812... Conveyance solenoid, 813... Holding solenoid, 815...
... Conveyance motor, 851 ... Lifter motor control circuit, 852 ... Door switch, 853 ... Lifter motor.

Claims (1)

[Claims] A paper feeding device that supplies paper to a paper processing device includes a storage section that stores a plurality of papers, and a transportation section that transports paper from the storage section and holds the transported paper until it is sent to the paper processing device. , further comprising a detecting means for detecting that the paper processing device and the paper feeding device are joined, and the prohibition of the paper feeding and conveying operation to the conveying section is canceled by the joining detection output of the detecting means. paper feed device.