JPS59223639A - Paper feeding mechanism - Google Patents

Abstract

PURPOSE:To prevent skew, jam, etc. of a paper sheet and facilitate taking-out of the paper sheet by raising and lowering a hopper plate corresponding to the feeding and discharge of the paper sheet and driving a pick-up roller for transporting the paper sheet, linked with the hopper plate. CONSTITUTION:A paper sheet 17 is loaded onto a hopper plate 1, and then sent into a reading part 14 by a pick-up roller 5 and traveling system rollers 6-13 when the plate 1 is pulled-up by a solenoid 4. While, a detector 15 detects the return of the paper sheet 17 onto the hopper plate 1 on discharge. Further, a detector 16 detects that the paper sheet 17 comes close to the reading part 14 on taking-in and detects the approach of the paper sheet 17 in the direction of hopper plate 1 on discharge. When the paper sheet 17 is taken-in according to the detection signal of the detector 16, the hopper plate is raised by the solenoid 4, and when the paper sheet 17 is discharged, the plate 1 is lowered through a spring 2, and an anticipated purpose can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper feeding mechanism that completely supplies paper to a paper transport path.

Conventionally, with this type of paper feeding mechanism, the operator had to hold the paper in his/her hand when inserting it into a rotating paper feed a-ra, as seen in copying machines, which resulted in the paper being inserted at an angle. V (skew), jams may occur and smearing occurs.Especially in optical character reading devices, when skinny occurs, the reading rate of characters decreases.Jams often occur on the paper at the paper supply port. This resulted in damage to the original manuscript9, which caused an increased sense of anxiety for the operator.

Furthermore, in a device in which the paper that has been pulled in is returned to the insertion slot in order to reduce the size of the device, there is a drawback that it is difficult to remove the paper after it has been returned.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to prevent the occurrence of paper skidding and jamming, and to facilitate the removal of paper that has been returned to the insertion slot.

According to the present invention, a hopper plate on which a paper guide is formed and is provided to be able to swing up and down;
A paper feeding mechanism is obtained which is characterized by having a drive unit for moving the hopper plate up and down, and a roller for drawing in the set paper when the hopper plate moves upward.

Next, the present invention will be described in detail with reference to the drawings showing one embodiment of the present invention. In this embodiment, the paper feed mechanism 'f
An example of application to a c-genological character reading device is shown.

In Figure 1, Ho Soba Play 1-1 has a shaft 3 on one side.
A solenoid 4 for lifting the hopper plate 1 is provided on one side that is not fixed. When the solenoid 4 does not operate, the hopper plate 1 is pressed downward by the spring 2. Paper 1 placed on hopper plate l
7, when the hopper plate l is pulled up by the solenoid 4, the pick roller 5 and the traveling system rows 26 to 13
The data is sent to the reading section 14 by. The paper 17 is read by the reading unit 14
Each roller rotates in the direction of arrow 30 when feeding in the same direction, and rotates in the direction of arrow 31 when discharging conversely.
When the pickrow 25 stops, the pickrow 25 also stops.

The detector 15 completely detects that the paper 17 has definitely returned to the hopper plate 1 at the time of ejection. Detector 16 is paper 17
This is a detector for detecting that the paper 17 approaches the reading unit 14 when the paper is being pulled in, and that the paper 17 is approaching the hopper grate 1 when being ejected.

In FIG. 2, paper 17 is placed on guide 51. of hopper grate l. It is set so as to come into contact with the guide 52. Paper conveyance is started by fully pressing the paper feed start switch 50.

In FIG. 3, which shows a circuit block diagram of the paper feeding mechanism, a signal from the paper feeding start switch 50 is transmitted to the chuck removal circuit 102 of the switch. AND GATE 103° OR GATE 10
4 to the 7 lip 70 knob 105 for controlling the operation of the solenoid. Clip 70 tube 1
The output of 05 controls the operation of solenoid 107 via solenoid driver circuit 106. The output of the detector 16 placed in the middle of the conveyance path is a rising V @ output circuit 111 where all pulses are generated when the rising edge 9 of the input signal is detected.
1° becomes human power. Detector 1 installed at the paper supply port
The output of 5 is connected to a fall detection circuit 115 which generates a pulse when the fall of the input signal is detected to be 9. The outputs of the detection circuits 111 and 115 are input to the OR gate 113 via AND gates 112 and 116e, respectively, and together reset the free tube 70 and the tube 105. The output from the detection circuit 115 is further used as a reset/reset signal for the 7-lip 70 knob 117 that controls on/off of the traveling motor, and a 7-lip 70 knob 117 that controls the entire rotation of the traveling motor.
This becomes a set signal for the knob 118. Furi Tubu 70. The tab 118 indicates feeding of paper toward the reading unit in the set state, and is in the set state when the power is turned on. The outputs of the seven lip-flops 117 and 118 are both input to a driver circuit 119 which drives a travel motor 120. The travel motor rotates the travel system rollers 6 to 13 and the big row 25 shown in FIG.

The operation of this circuit will be explained with reference to FIG.

When the paper 17 is loaded onto the hopper plate 1 and the paper feed start switch 50t is pressed, the chuck is removed by the chatter removal circuit 102, and then the signal 201 is generated. As a result, the travel motor on/off control 7 lip 70 knob 117 is set (the signal 209 becomes "l"), and since the output 200 of the rotation control rn-yv knob 70 knob 118 is "l", this information The driving motor 120 is controlled to rotate in the direction in which the paper is sent to the entire sheet reading section by the driver circuit 119 obtained.
0 knob 105 is manually set and the signal 208 becomes “1”
and the solenoid 107 is passed through the driver circuit 106.
make it work.

When the solenoid ad 107 operates, the hopper grate l is lifted upward around the shaft 3, and the paper 17 on the hopper grate l comes into contact with the big roller 5. As a result, the paper 17 is pulled toward the reading section and sent further to the back by the traveling rollers 6.7.

When the leading edge of the paper 17 reaches the detector 16, the detection signal 202 changes from "0" to "11" and a signal 203 is generated by the rising edge 9 detection circuit of 9.111.

At this time, since the rotation direction signal 200 is "1", the gate circuit 112. A signal 207 is passed through the OR circuit 113' to the reset input of the 7 lip 70 knob 105. As a result, the solenoid control (gJ-y lip 70 knob 105 is reset, the signal 208 becomes "0", the solenoid 107 stops operating, and the hopper plate 1 is returned downward by the spring 2).

As a result, while the reading section 14 is reading the characters written on the paper 17, the big roller 5 does not come into contact with the hopper plate l, so even if the big roller 25 and the traveling rollers 6 to 13 are interlocked, the system is stable. Delivery is guaranteed.

When the reading operation is completed, the signal 210 becomes "l", and the slip 70 knob 1 which controls the entire rotational direction of the motor 120
18 is reset and the signal 200 becomes 0". This signal is sent to the travel motor 120 through the driver 119e,
The rotation of motor 120 is reversed in the direction of ejection. The paper 17 that has started to move in the reversal direction is detected by the detector 16 (11 in FIG. 3).
0), a signal 202 is generated, and a signal 203 is generated by the rise detection circuit III.

At this time, since the signal 200 is "0", the gate circuit 109
A signal 206 is generated through the OR circuit 104e, the flip 70 knob 105 is set, and the signal 208 becomes "1". Therefore, the solenoid 107 operates again and the hopper plate 1 is pulled upward.

Running system low 26-13. Paper 1 by Biclow 25
7 is conveyed toward the hopper plate 1, the detector 15 detects the paper 17, and the signal 204 becomes 1''.

When the paper 17 is completely stored on the hopper plate 1, the signal 2 is activated.
04 is "θ", the falling edge is 9, the signal 205 is generated by the detection circuit 115, and the gate circuit 116. OR circuit 1
A signal 207 is generated via
5 pieces are set. As a result, the solenoid 107 becomes inoperable, and the hopper plate 1 is returned downward by the spring 2. At the same time, %71 lip 70 knob 118 is set (signal 200 is "l"), 7 lip 7
The zero knob 117 is reset (the signal 209 is "θ'"), and the motor 120 is stopped by the driver circuit 119.

Therefore, the discharged paper 17 is reliably discharged onto the hopper plate by the big row 25.

Further, since one end of the hopper plate 1 is lowered by the spring 20, the paper 17 can be easily taken out.

As explained above, the present invention uses a hopper plate that is rotatably arranged around a shaft provided on one side, thereby reducing paper skew and jamming, and making it easier to take out paper after processing. It has the effect of

[Brief explanation of the drawing]

Figure 1 is a schematic mechanical diagram of an embodiment of the present invention, Figure 2 is a diagram showing the paper setting position, Figure 3 is a block diagram of the motor and solenoid drive circuit, and Figure 4 is an operation timing diagram. be. l...Hopper plate, 2...Spring, 3...Shaft, 4...Solenoid,
5...--Bick roller, 6-13--Travel roller, 14-old...Reading section, 15-16...
...Detector, 17...Paper. Kaya 1 figure and a half 2 countries

Claims (1)

[Claims] a hopper plate on which a paper guide is formed and provided to be able to swing up and down; a driving means for vertically moving the hopper plate; and a drive means disposed within the paper guide when the hopper plate is driven upward. A paper feeding mechanism comprising a pick roller that engages with and conveys the paper.