JPH0314374Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention is a printing device that prints by moving at least one of the printing head or platen, and the device side checks whether or not the printing object is printed. The present invention relates to a print confirmation device that can perform

(b) Conventional technology For example, in the case of an automatic ticket inspection device used by station staff, the ticket inserted into the device is printed with necessary data such as the date, station name, serial number, etc. by a built-in printing device in multiple print heads. However, failure in printing of any of these data is not allowed. That is, since reprinting is not possible, it is necessary to reliably confirm that the information has been printed.

2. Description of the Related Art Conventionally, there has been a device that prohibits the printing head from being driven if no paper (material to be printed) has arrived (absent) at the printing head during printing.

(c) Problems to be solved by the invention However, in the case of the above-mentioned device, even if the print head or its platen is not fully movable,
As long as there is paper (material to be printed) in the area of the print head, the printing process will be executed, so it is unreliable to use this process to confirm the printing execution of multiple print heads. .

Therefore, the object of this invention is to provide a print confirmation device that can confirm printing execution with extremely high reliability.

(d) Means for solving the problem This invention consists of a lever for a print head to which a plurality of print heads each printing different information are attached, and a lever for a platen to which a platen is attached opposite to each of the print heads. The printing device is a printing device that prints by moving at least one of the levers and applying a common voltage to the plurality of printing heads, and a printing device that detects that a printing object is present at a printing position of the printing device. A printed object detector, a lever detector that detects when the lever set on the movable side has moved to the printing position, and a voltage application detector that detects that a voltage is commonly applied to the plurality of print heads. and a control means for outputting a print confirmation signal based on detecting all detection signals of the print object detector, the lever detector, and the voltage application detector. .

(E) Function According to the print confirmation device of this invention, the printing object detector detects the presence of the printing object at the printing position, the lever detector detects the lever that has moved to the printing position, and the voltage application is detected. The control means outputs a print confirmation signal based on the fact that the device detects the voltage commonly applied to a plurality of print heads, and when three unique detection conditions are not met, the print confirmation signal is not output.

(f) Effects of the invention As a result of the above, according to this invention, even if the existence of a printing target is confirmed at the printing position, if the movement of the printing head or platen is incomplete or if multiple printing heads are If no voltage is applied, printing is not confirmed, and printing execution can only be confirmed when three unique detection conditions are completely met. For example, if one of the multiple print heads is not driven and an incomplete This will definitely prevent the inconvenience of issuing printed materials with information printed on them.
You can check printing execution with extremely high reliability.

(g) Example of the invention An example of the invention will be described below in detail based on the drawings.

The drawing shows a printing device built into an automatic ticket inspection device used in station operations. This printing device prints the station name and serial number on the ticket inserted into the automatic ticket inspection device. Two of them are provided with their printing directions opposite so that they can be printed on the front side even if the ticket is inserted from either the front or the back.

In Figures 1 to 3, the ticket conveyance path is located at the base wall 1.
A pair of upper and lower conveyor belts 2, 2 are provided along the
are arranged on the left and right so that they hold both sides of the ticket and are conveyed.

Note that 3, 3 are pulleys, and 4, 4 are guide rollers, which are installed on the base wall 1 described above, and the upper pulley 3 has an input gear 5 on the outside of the base wall 1, to which power is applied. The above-mentioned conveyor belts 2, 2 are driven in a predetermined conveyance direction.

The printing device 6A located at the front stage of the ticket transport direction is used for printing tickets that are inserted with the front side of the ticket facing upward, and the printing device 6B located at the rear stage of the transport direction is for printing tickets that are inserted with the front side of the ticket facing down. It is used as a reverse for the ticket.

Ticket detectors 7A and 7B are provided at the front stage of each of the printing devices 6A and 6B for detecting that the bill has been conveyed to the printing position, and these ticket detectors 7A and 7B are constructed using well-known techniques. It is composed of a photoelectric sensor.

Although the two printing devices 6A and 6B have different printing directions on the front and back sides, they are structurally the same and will be described using the same reference numerals.

A fixed wall 8 is provided opposite the aforementioned base wall 1 at an appropriate interval, and mounting plates 9, 9 are fixed to the fixed wall 8 toward the conveyor belts 2, 2 side.

The mounting plates 9, 9 have first levers 10, 10 whose tips are positioned on one side of the conveying surface of the conveying belt 2...
and the second levers 11, 11 are parallel to each other and the support shaft 12,
A third lever 13 whose tip end is positioned on the other side of the conveyance surface of the conveyor belt 2 is pivotally supported by support shafts 14 , 12 .

At the base of the first levers 10, 10, there is an operating piece 16 for connecting with the solenoid 15 on one side in the vertical direction, and an interlocking piece 17 for interlocking the third lever 13 on the other side. They are installed consecutively.

The aforementioned operating piece 16 is connected to a solenoid 15 fixed to the mounting plate 9 via a connecting pin 18,
Further, a pin 19 is fixed to the interlocking piece 17, and this pin 19 comes into contact with a contact piece 20 connected from the base of the third lever 13 to operate the third lever 13.

Further, a spring 21 is provided on the support shaft 14 of the third lever 13, and this spring 21 acts on the fixed wall 8 and the contact piece 20, and acts to move the tip of the third lever 13 away from the conveying surface. do.

Further, this acting force acts via the pin 19 of the interlocking piece 17 in a direction that also moves the first lever 10 away from the conveying surface.

For this purpose, when the solenoid 15 is operated to attract, the operation piece 16 is pulled, the first lever 10 is moved in the printing direction, and the pin of the interlocking piece 17 is moved to the third
The contact piece 20 of the lever 13 is pushed against the spring 21, and the third lever 13 is moved in the printing direction.

A pressing piece 22 is fixed to the outer edge of the intermediate portion of the second lever 11, and the free end of this pressing piece 22 is connected to the first lever 11.
provided so as to come into contact with the outer edge of the lever 10,
Further, a spring 23 is provided on the support shaft 12 of the first lever 10, and this spring 23 acts on the interlocking piece 17 of the first lever 10 and the second lever 11, and presses the pressing piece 22 of the second lever 11. It acts to press and bias the first lever 10.

Therefore, when the first lever 10 moves in the printing direction, the second lever 11 moves in the printing direction by the force of the spring 23, and in the direction away from the printing position, the first lever 10 moves away by the force of the spring 21. It moves in conjunction with this.

A block 24 for holding the head is located at the free end of the third lever 13 and extends over both sides thereof.
is fixed, and on the ticket conveyance side of this block 24, on both end sides there are a serial number thermal head 25 for printing a serial number on the ticket, and a station name thermal head 26 for printing a station name on the ticket. are fixed at predetermined intervals.

These thermal heads 25 and 26 are connected to an appropriate head drive circuit (not shown).

A platen 2 is provided at the free end of the second lever 11, facing the serial numbering thermal head 25.
A block 28 to which 7 is fixed is fixed by screws 29, and these screws 29 are provided on the left and right sides.

The contact between the serial numbering thermal head 25 and the platen 27 is adjusted by the screw 29, but once this adjustment is performed,
The contact between the head 25 and the platen 27 is used as a reference.

Furthermore, at the free end of the first lever 10 mentioned above,
A platen 30 is located opposite the station name thermal head 26, and this platen 30 is fixed to a block 31, which is provided so that its mounting position can be adjusted.

That is, the tongue piece 32 is provided on the side surface of the first lever 10.
is fixed, and this tongue piece 32 is provided with two adjustment screws 33 in the width direction of the ticket, and these two adjustment screws 33 adjust the vertical position of the platen 30 and the inclination in the width direction of the ticket. Adjust the hit.

Further, an embedded screw 35 is provided at the lower center of the block 31 via a ball 34, and by moving in and out of this embedded screw 35, the contact against the inclination with respect to the ticket conveyance direction is adjusted. is connected to the first
It is fixed to the lever 10.

Note that the adjustment of the contact between the platen 30 and the station name thermal head 26 using the adjustment screw 33 and the embedded screw 35 is performed using the above-mentioned serial number thermal head 25.
This is performed based on the contact of the platen 27.

Note that 37A and 37B in the figure are micro switches that act on the rear end portions of the respective third levers 13 to detect that the respective printing devices 6A and 6B are driven to print.

Each printing device 6A, 6B configured as described above
Since each solenoid 15 is normally turned off, the first and second levers 10, 11 and
The third lever 13 is separated from the third lever 13 by the action of a spring 21, and is further away from the transport surface of the transport belts 2, 2.

By the time the ticket is conveyed to this printing position by the conveyor belts 2, 2, the front and back sides of the ticket have already been determined, and it is determined which printing device 6A or 6B will be used, and based on that determination, When the ticket is detected by the corresponding ticket detector 7A, 7B, the solenoid 15 of the corresponding printing device 6A, 6B is turned on for a predetermined period of time.

As a result, the first and second levers 10 and 11 move in conjunction with each other toward the conveyance surface, and at the same time, the third lever 1
3 is moved toward the conveying surface side by the pin 19 of the interlocking piece 17 of the first lever 10 coming into contact with the contact piece 20, and as a result, the ticket moves between the first lever 10, the second lever 11, and the third lever 13. A serial number and a station name are printed on the ticket by the heads 25, 26 and the platens 27, 30 so that the ticket is movably held.

This printing operation is detected by operating the corresponding microswitch 37A or 37B.

FIG. 4 shows a print confirmation control circuit for the printing devices 6A and 6B.
B.

For this purpose, one control circuit will be explained.

The first comparator 38 compares the output of the ticket detector 7 (corresponding to 7A and 7B in the above-described embodiment) with the comparison voltage, and outputs a signal indicating that the ticket detector 7 has detected a ticket.
When the signal “L” is output, the signal “H” is output, indicating that a ticket is detected.

The micro switch 37 (corresponding to 37A and 37B in the above-described embodiment) is turned ON when the third lever 13 moves for printing, and obtains a signal 〓H''.

The second comparator 39 connects the thermal heads 25, 26
When a common voltage is applied to the reference voltage, the applied voltage is compared with the comparison voltage, and when the applied voltage reaches a predetermined voltage, that is, when the applied voltage reaches a voltage value that can be printed, the signal 〓H'' is output. Output.

As a result, the ticket detection signal L'' is output from the ticket detector 7, and the micro switch 37
When the detection signal 〓H'' indicating that the third lever 13 has moved to the printing position is output from '', and this output signal can be used as a confirmation signal that printing has been executed normally.

Furthermore, the signal 〓L″ of the above-mentioned NAND circuit 40
The voltage continues to be applied to the thermal heads 25 and 26 for the time required for printing, and the continued output of the signal L'' can be used as a confirmation signal that printing has been completed. .

In the embodiment described above, the thermal heads 25, 2
6 or the platens 27, 30 are not fully movable, or if voltage is not applied to both the thermal heads 25, 26, execution of printing cannot be confirmed, and the three unique detection conditions are completely met. You can check the printing with extremely high reliability.

In addition, in the above-mentioned embodiment, the platen 27,
Although the contact position is adjusted on the thermal heads 25 and 26 side, it is also possible to adjust the contact position on the thermal heads 25 and 26 side.

Further, thermal heads 25 and 26 may be provided on the first and second levers 10 and 11.

Further, although both the first and second levers 10, 11 and the third lever 13 are movable, one may be fixed.

In terms of the correspondence between the structure of this invention and the structure of the embodiment described above, the print head of this invention corresponds to the thermal heads 25 and 26 of the embodiment, and the platen corresponds to the platens 27 and 30 in the same manner. , the printed object detector corresponds to the ticket detectors 7A, 7B and the first comparator 38, and the lever detector corresponds to the micro switches 37A, 3
7B, the levers correspond to the levers 10, 11, and 13, the voltage application detector corresponds to the second comparator 39, and the control means corresponds to the NAND circuit 40. The present invention is not limited to only the configuration of the embodiment.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, with Fig. 1 being a partially cutaway front view of the printing device, Fig. 2 being a partially cutaway plan view thereof, and Fig. 3 being a partially cutaway sectional view of the printing device. The side view, FIG. 4, is a block diagram of the print confirmation control circuit. 6A, 6B... Printing device, 7A, 7B... Ticket detector, 13... Third lever, 25, 26... Thermal head, 27, 30... Platen, 37A,
37B... Micro switch, 38, 39... Comparator, 40... NAND circuit.

Claims (1)

[Claims for Utility Model Registration] At least one of a lever for a print head to which a plurality of print heads each printing different information are attached, and a lever for a platen to which a platen is attached opposite to each of the print heads. a printing device that moves a plurality of printing heads and performs printing by applying a common voltage to the plurality of printing heads, the printing object detector detecting that a printing object exists at a printing position of the printing device; a lever detector that detects when a lever set on the movable side has moved to a printing position; a voltage application detector that detects that a voltage is commonly applied to the plurality of printing heads; and a detection object to be printed. a control means for outputting a print confirmation signal based on detection of all detection signals of the lever detector, the lever detector, and the voltage application detector.