JPS5851859B2 - Form sending device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an optical character reader (OCR) that has an elevator-type form hopper that detects the stacked height of paper and always sends out forms from a constant height. The present invention relates to a form sending device for a copy machine.

In a card reader, OCR, etc., if a form sending command is not successful, the form and card are left as they are and a sending command is issued again in an attempt to lead to success.

There are various reasons why a form cannot be sent out properly, but in many cases it is due to failure to separate it from the underlying paper.

In the conventional technology, the paper feed command is issued again while leaving the form as it is, so once the paper feed fails, it is often impossible to recover without human intervention.

An object of the present invention is to increase the rate at which an unsuccessful paper feeding operation can be recovered without human intervention.

In other words, if the delivery of a form once fails, the entire hopper is lowered a certain distance, and in the process, the multiple forms that have already entered the entrance become suspended from below.
At this time, it is separated from the paper underneath.

After a certain period of time, the entire hopper is lifted to a predetermined position.

When a feed-out command is issued when the form reaches a predetermined position, the form that could not be sent out first has already been separated from the paper below, so it will definitely be sent out this time.

There is a method in which the entire form stacked with this hopper is lowered once to separate the paper, and then the form is raised again or the form is quickly moved up and down to vibrate the entire form and separate the paper. It is a characteristic.

Next, one embodiment of the present invention will be described.

When a lift command A is given to the lift command circuit 15 shown in FIG. 1, the motor 12 is rotated by the amplifier 17, the screw 10 connected to the gear box 11 is rotated to the left, and the hopper 9 starts to rise.

Although the form 8 comes into contact with the delivery roller 1, the hopper further rises, so that the lever 4 connected to the delivery roller 1 also rotates to the left about the separation roller 3.

When the tip of the lever 4 leaves the upper limit switch 13, the command circuit 15 is reset by the switch signal and the hopper 9
stops rising.

After this, when a feed-out command is issued to the form, the control circuit (not shown) transmits power to the separation roller 3, the belt 2, and the feed-out roller 1 in this order, and the roller rotates in the direction shown by the arrow in Figure 1 between the roller and the form. The forms are moved to the left by the frictional force, separated one by one by a separating roller 3 and a separating belt 5 moving in the opposite direction, and sent to a form feeding mechanism (not shown).

However, sometimes the upper form 8 and the next form 8' stick together strongly and are stopped by the separation mechanism, preventing them from passing through the light emitting diode 19 and photodiode 18 of the form detection part within the specified time. Detects an abnormality in the feeding operation depending on the part.

Conventionally, at this point, the device would be stopped or a sending command would be issued again to perform recovery processing.

In the present invention, when an abnormality in the feeding operation is detected, the tonne hopper is lowered as shown in FIG.

That is, as shown in FIG. 3, the sending command is once reset at [F] when an abnormality is detected.

Next, when a descending command B is sent to the descending command circuit 16, the amplifier 17
As a result, the motor 12 rotates and the hopper 9 descends.

When the Horopa 9 reaches the lower limit switch 14, a switch signal is issued◎
As a result, the lowering command circuit 16 is reset and the lowering of the hopper 9 is stopped.

At this time, the forms 8 and 8', which were previously sent out unsuccessfully, are separated by their own weight as shown in FIG.

After the short time T has elapsed, the hopper raising command A is issued as described above, and the form sending operation is performed again in the same manner as described above.

The forms 8 and 8' are in the state shown in FIG. 1 just before they are sent out, but since they have been separated once by the hopper's lowering operation, one sheet is certainly sent out by the sending command.

The same effect can be obtained even if the hopper lowering operation is stopped at T8 and the ascending command is issued from there, as shown in FIG.

As mentioned above, the conventional mechanism that feeds paper by the stiffness of the form and rollers does not separate the form properly, so there are many cases where errors occur and require operator intervention, which impairs the operability of the device. However, according to the present invention, it is possible to provide a device with better operability than conventional devices.

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams showing one embodiment of the present invention, and FIG. 3 is a waveform diagram for explaining the operation. 1...Feeding roller, 2...Belt, 3...Separation roller, 4...Lever,
5... Separation belt, 6... Belt drive roller, 7... Gate, 8... Form,
8'... Ledger, 9... Hopper, 10...
...Screw, 11...Gear box 1, 12
...Motor, 13... Upper limit switch,
14... Lower limit switch, 15... Rising command circuit, 16... Lowering command circuit, 17...
...Amplifier, 18...Photodiode, 1
9... Light emitting diode.

Claims (1)

[Claims] 1. A hopper for placing a form that moves up or down in response to a command signal, and when the hopper is in the raised position, it can make contact with the topmost form on the hopper, and transports the contact form in response to a feed command. a form sending means that operates to send out the form onto the road; a form detecting means provided at a predetermined position on the conveyance path; and the detecting means does not detect the form within a predetermined time after a sending command is given to the form sending means. and a control signal generating means for giving a command signal to the hopper to lower the hopper once and then raise it again, and then giving a command for sending out again to the form sending means.