JPS6134990B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a paper feeding device, such as an automatic inserter, that stops automatically fed paper at a predetermined position.

As is well known, in deposit teller devices, etc., when paper such as a passbook is inserted into the device's slot,
The paper is automatically sucked and fed by an automatic inserter mechanism, stops at a predetermined position, and after predetermined information is printed by a typewriter, is ejected and returned. In this type of device, the stop position of automatically sucked paper is detected by detecting a stop mark written on the paper. For example, characters at the previous printing position are used as this stop mark. In this case, it is often undesirable to stop the paper upon detection of the stop mark and immediately proceed to the printing operation because there are many constraints on the design and manufacturing of the device. Additionally, depending on the device, it may be structurally difficult to install a stop mark reader immediately before the typewriter printing position, and the stop mark reader may have to be installed an appropriate distance above the printing position. In this case as well, it is not possible to immediately stop the paper and move on to the printing operation upon detection of the stop mark. For this reason, in the past, a timer circuit such as a monostable circuit was activated by the stop mark detection signal, and paper feeding was stopped after a predetermined period of time (Japanese Patent Application Laid-open No. 131732/1983), or a timer circuit such as a monostable circuit was operated in conjunction with paper feeding. generate a synchronization pulse, start counting the synchronization pulse with a stop mark detection signal,
The counted value is compared with a predetermined set value in a comparison and coincidence circuit, and when they match, paper feeding is stopped (Japanese Patent Application Laid-open No. 116923/1983).
However, the former method has the disadvantage that the stop position, that is, the printing position, shifts due to fluctuations in the paper feed speed, etc., and the latter method has the disadvantage that the adjustment accuracy of the stop position depends on the number of synchronization pulses per unit moving distance of the paper. This had the disadvantage that the degree of freedom of the synchronous pulse generator and counter was narrowed.

In order to solve the above-mentioned drawbacks of the prior art, the present invention delays the output of the stop mark detector with a finely adjustable delay circuit, uses this delayed signal to instruct the start of counting of synchronization pulses, and then To provide an automatic inserter which stops paper when a predetermined set value matches.

Hereinafter, the content of the present invention will be explained in detail with reference to illustrated embodiments.

FIG. 1 shows an embodiment of the present invention. In the figure, reference numeral 1 indicates a synchronous pulse generator, in which a slit disk is connected to the rotating shaft of a motor 12 that drives a feed roller 11 for feeding paper 10 such as a bankbook, and the disk is connected to a light emitting diode. It has a structure in which it is sandwiched between light receiving diodes. 2 is a counter that counts the synchronizing pulses _S0 output from the synchronizing pulse generator 1, and 3 is a counter that compares the count output _S3 of the counter 2 with a distance setting signal _S4 externally applied through the binary conversion circuit 9. 4 is a motor drive circuit that drives the motor 12 with a start signal _S1 given from the outside and sends out a signal _S2 to stop driving the motor with a match signal _S5 from the comparison match detection circuit. It is. 5 is a stop mark reader that reads the stop mark written on the paper 10 (usually the previously printed characters or symbols are used), and 6 is a stop mark reader that shapes the waveform of the output S ₆ of the stop mark reader 5 and stops it. It is a stop mark detector that obtains a mark detection signal _S7 . Reference numeral 7 denotes a time constant circuit consisting of, for example, a monostable circuit and a differentiating circuit, which outputs a signal _S8 delayed by a time T with respect to the stop mark detection signal _S7 , as shown in FIG. Further, the monostable circuit constituting the time constant circuit 7 uses, for example, a variable resistor, so that the delay width T can be finely adjusted. 8 is the signal S ₈ from the time constant circuit 7
This is a counting command circuit which instructs the counter 2 to start counting upon arrival of , and outputs a signal S ₉ that clears the counter with the match signal S ₅ from the comparison match detection circuit 3 .

Now, when a paper 10 such as a bankbook is inserted into the input slot of the device (not shown) and a start signal _S1 is applied around this time, the motor 12 starts rotating due to the signal _S2 from the motor drive circuit 4, and A feed roller connected to the motor also rotates and paper 10 is fed into the apparatus. On the other hand, as the motor 12 rotates, the synchronous pulse generation circuit 1 sends out a synchronous pulse S ₀ (one pitch of the synchronous pulse indicates the unit feed amount of paper), but at this time the counter 2 is in a stopped state, The counting operation of the synchronization pulse S ₀ is not started. As the feeding operation of the paper 10 progresses and the mark reader 5 reads the stop mark written on the paper, the mark detector 6 generates a stop mark detection signal _S7 . This stop mark detection signal S ₇ is the time constant circuit 7
is delayed by a predetermined time, and the signal _S8 is output. FIG. 2 shows the time relationship between signals _S7 and _S8 . The arrival of this signal _S8 sets the counting command circuit 8, and as a result, the signal _S9 instructing the start of counting becomes "1", and the counter 2 starts counting the synchronizing pulses output from the synchronizing pulse generator 1. Start. Thereafter, when the count value _S3 of the counter 2 matches the distance setting signal _S4 given from the outside through the binary conversion circuit 9, the comparison and coincidence circuit 3 outputs a coincidence signal _S5 . The motor drive circuit 4 stops driving the motor 12 upon arrival of the coincidence signal _S5 , and
Accordingly, the feeding of the paper 10 is stopped. That is, after the stop mark on the paper is read by the stop mark reader 5, the paper 10 is processed for a delay time T in the time constant circuit 8 and a time for counting the number of synchronization pulses specified by the distance setting signal _S4 . It will be stopped after sending the total amount. The coincidence signal _S5 is also applied to the counting command circuit 8, and as a result, the counting command circuit 8 is reset, the signal _S9 is restored to "0", and the counter 2 is cleared.

Here, the delay time T of the stop mark detection signal _S7 can be continuously variably adjusted by the finely adjustable time constant circuit 7, so that the deviation of the stop position due to manufacturing errors can be adjusted for each unit of paper feed. It is possible to fine-tune the number of synchronization pulses per quantity independently and continuously. This will be explained below.

Now, the distance from when the stop mark is detected to the position where the paper 10 should be stopped is A±a(±
a is calculated by manufacturing error etc. for each device), and when the amount of movement of the paper 10 per pitch of the synchronization pulse is B, then A-a≧nB, A-a<(n+1)B, n (n is (a positive integer) is the number of synchronization pulses that counter 2 should count. In the present invention, the value corresponding to the above A of a certain device may vary due to manufacturing errors.
When A′ (A−a≦A′≦A+a), {A′−
nB} to {A'-(n-1)B} by the delay from the stop mark detection signal. That is, the feeding speed of the paper 10 is
In this case, the delay time T of the time constant circuit 7 is adjusted so that uT={A'-nB} or {A'-(n-1)B}. In practice, it is not always necessary to make this adjustment by measuring the values of u, T, A', etc., but simply make the device stop, and then make sure that the paper 10 stops at the correct stop position. In this case, it is only necessary to adjust the variable resistance in the time constant circuit 7. The paper used for this adjustment includes:
All you have to do is write down a stop mark and a mark indicating the correct stop position.

Note that here {A′−nB} or {A′−(n−
1) B} is selected because the feed amount corresponding to the time from when the counter 2 starts operating in response to the delayed signal _S8 of the stop mark detection signal _S7 until the first synchronization pulse is generated is from 0 to Bmm. This is because it varies within the range. Taking this variation into consideration, it is sufficient to write a mark indicating the correct stopping position on the paper used for adjustment.

As is clear from the above description, according to the present invention, even if there is a risk that the printing position may shift from device to device due to dimensional errors in each component of the device, this type of deviation can be corrected by the number of pulses per unit feed amount. It is possible to make fine adjustments continuously, regardless of the situation, and it is expected that the quality of the device will improve.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of a paper feeding device according to the present invention, and FIG. 2 is a time chart showing the time relationship between a stop mark detection signal and its delayed signal. 1... Synchronous pulse generator, 2... Counter, 3
...Comparison match detection circuit, 4...Motor drive circuit,
5... Stop mark reader, 6... Stop mark detector, 7... Time constant circuit, 8... Counting command circuit, 9
...Binary conversion circuit, 10...Paper, 11...Feed roller, 12...Motor.

Claims (1)

[Claims] 1. In a paper feeding device that feeds paper and stops it at a predetermined position, means for generating a synchronizing pulse synchronized with the amount of paper feed, and means for detecting a stop mark marked on the paper to generate a stop mark detection signal. a stop mark detection signal output means for outputting a stop mark detection signal, a delay means whose delay time is adjustable for receiving a signal from the stop mark detection signal output means, and a counter means for counting the synchronization pulses in response to a signal from the delay means. and delaying the output from the stop mark detection signal output means by the finely adjustable delay means;
A paper feeding device characterized in that the counter means starts counting the synchronizing pulses using the delayed signal, and stops feeding the paper when the counted value reaches a predetermined value.