JPH0413153B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bookkeeping machine that is installed in a bank or the like and prints information on a manually inserted medium such as a passbook.

[Conventional technology]

Normally, when a medium is manually inserted into a bookkeeping machine when setting the medium, the medium bounces when it hits a stopper. Therefore, if you start the conveyance operation to send the medium to the printing unit while the medium is bouncing,
Sometimes the medium is conveyed in an inclined state and then set in the printing section in that inclined state.

Therefore, a method is used in which the transport operation is not started for a certain period of time after the medium hits the medium stopper, and the bounce of the medium is sufficiently attenuated.

On the other hand, when transporting the medium to the printing section, it is necessary to evacuate the print head to a retracted position such as the home position beforehand to prevent the medium from getting caught in the print head and causing an obstruction to transport. be.

Conventionally, the print head retraction operation and the medium bounce attenuation operation were performed in series in time, for example, by performing the retraction operation after the attenuation operation.

[Problem to be Solved by the Invention] However, in the conventional technology, the conveyance of the medium to the printing section is not started until the total time T3 = T1 + T2 of the time T1 required for the print head to retreat and the decay time T2 required for the attenuation of the bounce. This had the drawback that the system was delayed and the operating efficiency of the equipment was reduced.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a bookkeeping machine in which the print head is retracted during the bounce decay time, thereby eliminating the above-mentioned drawbacks.

[Means to solve the problem]

Therefore, in the present invention, there is provided a pathway into which a medium is inserted, a stopper which stops the medium inserted into the pathway at a predetermined position, a feed roller which conveys the medium in the pathway, and a stopper that stops the medium inserted into the pathway when the medium hits the stopper. a medium detection sensor that detects
A print head that prints on the medium conveyed by the feed roller, a retraction sensor that detects when the print head has retracted to a predetermined position, and a predetermined bound based on the detection results of the medium detection sensor. The bookkeeping machine is equipped with a timer circuit that measures a predetermined time until the decay of the timer, further comprising:
A control circuit that controls the operation of the print head and performs a retreat operation of the print head in parallel with the time counting operation of the timer circuit based on the detection result of the medium detection sensor, and the detection results of the medium detection sensor and the retreat sensor; A medium suction control circuit is provided which retracts the stopper from the pathway and controls the feed roller to perform a medium suction operation based on the completion of time measurement by the timer circuit.

[Effect]

When the medium detection sensor detects that a medium has been inserted into the pathway, the timer circuit starts counting, and the control circuit starts retracting the print head to the retracted position.

Based on the detection results of the medium detection sensor and the retraction sensor and the completion of time counting by the timer circuit, the medium suction circuit retracts the stopper from the pathway and starts suction of the medium by the feed roller.

Therefore, since the medium is sucked in after waiting until the bounce of the inserted medium has attenuated, the medium does not move diagonally and is set at the printing position, and the timer circuit measures the time required for the attenuation. Since the printing head is retracted in parallel, the time required to start sucking the medium inserted into the pathway can be shortened.

〔Example〕

Hereinafter, embodiments will be described using FIGS. 1 to 4.

FIG. 1 is a diagram showing a printing section of a bookkeeping machine.

FIG. 2 is a side view of the bookkeeping machine.

FIG. 3 is a diagram showing the control system of the bookkeeping machine.

FIG. 4 is a time chart showing the signal status of each part of the bookkeeping machine.

As shown in FIG. 1, the bookkeeping machine 1 has a platen 2 that constitutes a printing section 4. Below the platen 2 in the figure, a screw shaft 3 is installed along the platen 2, and a drive motor is connected to the screw shaft 3. 5, it is rotatably provided. A carrier 7 carrying a print 6 is screwed onto the shaft 3, and the print head 6 rotates in the direction of arrow A, as the shaft 3 rotates forward and backward.
It can freely move in the B direction, that is, in the axial direction of the platen 2.

A home position X, which is the retracted position of the print head 6, is set outside the left end of the platen 2 in the figure.
A, a pom position detection sensor 9 which is a retraction sensor consisting of a light receiving section 9b is installed.

Further, a pathway 16 formed by guide plates 12 and 12' is provided on the medium insertion side of the printing section 4, that is, on the upper side in FIG.
A stopper 10 movable in directions of arrows C and D, and a medium detection sensor 11 comprising a light emitting section 11a and a light receiving section 11b are installed. Above the medium detection sensor 11, there are feed rollers 13 and 1.
3' and 15, 15' can be rotated freely and arrow C,
The medium detection sensor 11 is provided to be openable and closable in the D direction, and a timer circuit 17 and a print head control circuit 19 are connected to the medium detection sensor 11, as shown in FIG. A sensor 9 and a motor 5 are connected to the print head control circuit 19, and an AND circuit 20 connected to a medium detection sensor 11 and a timer circuit 17 is further connected to the print head control circuit 19. Further, a medium suction control circuit for driving and controlling the stopper 10, feed rollers 13, 13', 15, 15', etc. is connected to the AND circuit 20.

Since the bookkeeping machine 1 has the above configuration,
To set the medium 22 in the bookkeeping machine 1, open the feed rollers 13, 13', 15, 15' in the direction of arrow D as shown by the solid line in FIG.
with the medium 2 protruding into the pathway 16.
2 manually from the top in the figure. When the medium 22 hits the stopper 10, the medium detection sensor 11
When the light 23 from the light emitting part 11a to the light receiving part 11b is blocked, the detection signal S1 is detected as shown in FIG. 4a.
changes from “0” to “1” and the timer circuit 17,
It is input to the AND circuit 20 and the print head control circuit 19.

The timer circuit 17 is set to measure a predetermined time T2 until the bounce caused by hitting the stopper 10 is sufficiently attenuated after the medium is inserted. Therefore, the timer circuit 17 detects that the detection signal S1 is "1".
After that, the timer circuit 17 is operated for a certain decay time T2. In the meantime, stopper 10
Medium 2 generated in the vertical direction in Fig. 2 when it collides with
The bounce of the medium 22 is attenuated, and the medium 22 hits the stopper in the correct attitude and comes to rest. In addition,
The detection signal S1 is intermittent depending on the bounce of the medium 22, but the timer circuit 17 and the print head control circuit 19, which will be described later, are activated at the first rise of the detection signal S1 when the medium 22 first hits the stopper 10. Therefore, there is no problem with the operation of the timer circuit 17, etc. On the other hand, the control circuit 19 receives the detection signal
By S1, the print head 6 and therefore the carrier 7
The home position detection sensor 9 detects whether the
If the print head 6 is on the platen 2 side and not in the home position X,
Immediately drive the motor 5 to rotate the screw shaft 3.
The printing head 6 is retracted toward the platen side A, and the blocking plate 7a of the carrier 7 blocks the light 25 from the light emitting part 9a of the home position detection sensor 9 to the light receiving part 9b, and the printing head When the motor 6 reaches the home position X, the motor 5 is stopped. Since the printing head 6 is stopped at the position where printing is completed, the time required for retracting to the home position X differs each time the print head 6 is retracted. The detection signal S2 from this home position sensor 9,
If a suction operation is started based on the detection signal S1 from the medium detection sensor 11, the medium will be sucked in while it is bouncing, and the medium will be sucked in at an angle.

Therefore, after time T1, when the print head 6 is located at the home position However, the AND circuit 20 is output to the timer circuit 17.
The output signal S3 is also monitored, and the output signal S4 does not become "1" unless the decay time T2 has elapsed.

As shown in FIG. 4c, the signal S2 is
Later, as the output signal S3 changes from "0" to "1" and the decay time T2 elapses, the output signal S3 changes from "0" to "1" as shown in FIG. 4b.
Additionally, a medium 22 is present on the stopper and a sensing signal is detected.
When S1 is “1”, the output signal S4 is
As shown in FIG. 4d, it changes from "0" to "1".

Then, the medium suction control circuit 21
3, 13', 15, 15' are closed in the direction of arrow C as shown by the dashed line in FIG. is retracted in the direction D, and further, the feed rollers 13, 13', 15, and 15' are driven to rotate to transport the medium 22 in the direction of the arrow E, and set it at a predetermined position in the printing section 4.

Note that since the suction operation is started after the attenuation time T2 has elapsed, the bounce of the medium 22 is sufficiently attenuated. Therefore, the printing section 4 is also correctly set without being tilted. Also, since the print head 6 has been retracted to the home position X, the medium 22 is
It is smoothly set on the printing part 4 without getting caught. When the medium 22 is set in the printing section 4, the printing head 6 is moved from the home position X in the direction B to start printing.

〔Effect of the invention〕

As described above, according to the present invention, the evacuation operation of the printing head 6 is performed in parallel in time during the decay time of the bounce that occurs when the medium hits the stopper, and the evacuation operation is performed after the elapse of the decay time. Since the conveyance starts after the media has finished, the suction operation starts after the bounce during insertion has sufficiently subsided, so the media remains stationary on the stopper.
The medium can be sucked in the correct posture, and the conveyance of the inserted medium can be started earlier than before, so that the operating efficiency of the apparatus can be improved.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the printing section of the bookkeeping machine, Fig. 2 is a side view of the bookkeeping machine, Fig. 3 is a diagram showing the control system of the bookkeeping machine, and Fig. 4 is a diagram showing the signal status of each part of the bookkeeping machine. This is a time chart showing. 1... Bookkeeping machine, 4... Printing section, 6... Printing head, 9... Home position detection sensor, 10
...Stopper, 11...Medium detection sensor, 13,
13', 15, 15'...Feed roller, 16...Pathway, 17...Timer circuit, 19...Print head control circuit, 21...Medium suction control circuit, 2
2... Medium, T2... Decay time, X... Retreat position (home position).

Claims (1)

[Scope of Claims] 1. A pathway into which a medium is inserted, a stopper which stops the medium inserted into the pathway at a predetermined position, a feed roller which transports the medium in the pathway, and a mechanism in which the medium hits the stopper. a print head that prints on the medium conveyed by the feed roller; a retraction sensor that detects that the print head has retreated to a predetermined position; and a medium detection sensor that detects Based on the results, a timer circuit that measures a predetermined time until a predetermined bounce decays and the operation of the print head are controlled, and based on the detection results of the medium detection sensor, a timer circuit that measures a predetermined time until the bounce attenuates is controlled in parallel with the time measurement operation of the timer circuit. , a control circuit for retracting the print head, a control circuit that retracts the stopper from the pathway based on the detection results of the medium detection sensor and the evacuation sensor, and the completion of time measurement by the timer circuit, and controls the feed roller to remove the medium. A bookkeeping machine characterized by comprising: a medium suction control circuit that performs a suction operation;