JPH0753456B2 - Printer device - Google Patents

Description

The present invention relates to an improvement of a printer device, and an object of the present invention is to provide a printer device that performs various timing operations in a quick and simple manner in a printer apparatus that executes various operations in synchronization with a timing signal. The timings at which the plurality of operation instruction data are written in advance so that each of the plurality of operation instruction data has a one-to-one correspondence with each of the plurality of timing signal count values.
A flag table is provided, and when the timing signal is generated, the timing signal count value is updated, and the operation instruction data corresponding to the updated count value is set in the timing flag
The configuration requirement is that the printer mechanism unit be read from the table and the operation specified by the read operation instruction data be performed.

[Industrial application field]

 The present invention relates to an improvement of a printer device.

[Conventional technology]

In the dot matrix type printer device,
Attach a disc with a slit to the shaft of the carrier drive motor,
A light emitting element and a light receiving element are arranged so as to sandwich a disk with slits, and a signal output from the light receiving element is used as a timing signal. In the processing such as printing and line feed of the printer device, head impact, line feed solenoid energization, overcurrent check, etc. are performed in synchronization with the timing signal, but the timing signal synchronization program determines which operation is performed at each timing. The number of timing signals is counted, and conditional branching is performed according to the number.

FIG. 7 is a diagram showing a left end sensor output, a right end sensor output, and a timing signal. The printer device is provided with a left end sensor and a right end sensor. When the carrier is at the left end, the left end sensor is turned on, and when the carrier is at the right end, the right end sensor is turned on. Printing is performed during the period from the fall of the output of the left edge sensor to the rise of the output of the right edge sensor and the period from the fall of the output of the right edge sensor to the rise of the output of the left edge sensor. A in synchronization with the first timing signal after the output of the left edge sensor falls
(Memory address or register) is set to 1, and thereafter, the value of A is incremented by 1 every time a timing signal is generated.

FIG. 6 is a diagram showing a flow chart of a timing signal synchronization program in a conventional printer device. When the timing signal is generated, an interrupt occurs and the timing signal synchronization program is executed. The following processing is performed by the timing signal synchronization program.

+1 the timing signal count value stored in A
And write to A.

It is checked whether or not the value of A is 2 ≦ A ≦ 5. If yes, go to, if no, go to.

 Start head impact. Continue to the next.

Check whether the value of A is 1 or not. If yes, go to and if no, go to.

 Energize the line feed solenoid. Continue to the next.

Check whether the value of A is 5. If yes, go to and if no, go to.

Check whether the value of A is 1. If yes, go to and if no, go to.

 Perform overcurrent check. Continue to the next.

It is checked whether or not the value of A is 6 ≦ A ≦ 9. If yes, go to and if no, go to.

Check whether the value of A is n. If yes, go to and if no, go to.

Check whether the value of A is n. If yes, go to and if no, end.

 Perform termination processing.

[Problems to be Solved by the Invention]

The conventional technique as described above has a drawback that the program becomes complicated as the number of conditional branches increases, and the time required to start the processing becomes long. Further, for example, in FIG. 6, there is a drawback that the overcurrent check timing when A = 1 and the overcurrent check timing when A = n are deviated.

The present invention has been made in view of this point, and the timing operation process can be easily and quickly performed in a printer device that executes various operations such as turning on / off of a solenoid in synchronization with a timing signal. It is an object of the present invention to provide a printer device having such a structure.

[Means for Solving the Problems]

FIG. 1 is a principle diagram of the present invention. The present invention is premised on a printer device including a printer mechanism unit 100 and a printer control unit 200 that generates a control signal for operating the printer mechanism unit 100 in synchronization with a timing signal generated by the printer mechanism unit 100. I am trying.

In the timing flag table 210, a plurality of operation instruction data corresponding to the timing signal count value and one-to-one are written in advance.

The printer control unit 200 includes a timing signal counting unit 220 for counting timing signals, a timing flag reading unit for reading operation instruction data corresponding to the timing signal count value from the timing flag table 210, and a reading unit. And a processing unit 240 that performs processing for executing the operation instructed by the operation instruction data.

[Action]

When the timing signal is generated, the timing signal count value is updated. The operation flag data corresponding to the updated timing signal count value is the timing flag table 21.
Read from 0. The printer control unit 200 performs processing for executing the operation instructed by the read operation instruction data.

〔Example〕

FIG. 2 is a block diagram of a configuration example of the printer device. In the figure, 100 is a printer mechanism unit, 200 is a printer control unit, 201 is an MPU, 202 is a ROM, 203 is a RAM, 204 is an output port, 205 is a driver, and 206 is a bus.

The printer device is a dot-matrix type printer device and includes a printer mechanism unit 100 and a printer control unit 200. The printer mechanism unit 100 has a print head, a carrier drive motor, a line feed solenoid, a timing signal generation unit, and the like. The MPU 201 executes the program in the ROM 202. The ROM 202 stores a timing flag table and various control programs. RAM203
Inside, there are various work areas. Various signals are sent from the MPU201 to the printer mechanism 100,
These signals are sent to the printer mechanism unit 100 via the output port 204 and the driver 205. When the timing signal is generated by the printer mechanism unit 200, the MPU 201 is interrupted and the timing signal synchronization program described later is executed.

FIG. 3 shows the timing operation diagram of the shuttle printer, and FIG. 4 shows the timing operation diagram for the shuttle printer.
It is a figure which shows the structural example of a flag table.

The shuttle printer has a plurality of print pins. The print area per print pin is, for example, 4 dots. When printing with a shuttle printer, each print pin sequentially prints four dots belonging to the first dot row. After that, a line feed is made for one dot. Next, each print pin sequentially prints four dots belonging to the next dot row. After that, a line feed is made for one dot. Hereinafter, the same operation is repeated.

Flag number in timing flag table B ₁ , B
₂ , ..., B _n correspond to timing signal count value = 1, timing signal count value = 2, ..., Timing signal count value = n, respectively. One byte of operation instruction data is provided corresponding to each timing signal count value. Bit 7 of the operation instruction data indicates whether or not the impact is turned on, bit 6 indicates whether or not the line feed solenoid is turned on, bit 5 indicates whether or not an overcurrent check is performed, and bit 4 Indicates whether to execute the one-line execution end processing. When the bit is "1", the operation is executed, and when the bit is "0", the operation is not executed. The timing flag table is stored in memory. The operation instruction data of B ₁ is stored in the address 0 (head address) of the table, the operation instruction data of B ₂ is stored in the address 1, and the B _n operation instruction data is stored in the address n−1.

When the timing signal is generated, the timing signal count value is updated. The address in which the operation instruction data is stored is obtained from the updated count value and the start address of the timing flag table, and the operation instruction data is read from the timing flag table based on this address,
The printer mechanism unit 200 is caused to perform the operation instructed by the read operation instruction data. For example, if the timing signal is the fifth one from the start of printing, B ₅
The operation instruction data of is read. Since the operation instruction data of B ₅ indicates impact on and line feed solenoid on, only impact on and line feed solenoid on are performed.

FIG. 5 is a diagram showing a flow chart of the timing signal synchronization program of the present invention. When a timing signal interrupt occurs, execution of the timing signal synchronization program is started and the following processing is performed.

+1 the timing signal count value stored in A
And write to A.

Based on the value of A and the start address of the timing flag table, the operation instruction data B _x corresponding to the value of A (denoted as x) is read.

It is checked whether or not the operation instruction data B _x indicates impact on. When it is 1 (when instructing), it proceeds to, and when it is 0 (when not instructing), it proceeds to.

 Start head impact. Proceed to.

Check whether the operation instruction data B _x indicates a line feed solenoid on. When it is 1, the process proceeds to, and when it is 0, the process proceeds to.

 Turn on the line feed solenoid. Proceed to.

 Turn off the line feed solenoid.

It is checked whether or not the operation instruction data B _x instructs the overcurrent check. When it is 1, the process proceeds to, and when it is 0, the process proceeds to.

 Perform overcurrent check. Proceed to.

It is checked whether or not the operation instruction data B _x indicates the end processing. When it is 1, it advances, and when it is 0, it is END.

 Perform end processing and set to END.

〔The invention's effect〕

As is clear from the above description, according to the present invention, the printer control unit has a simple structure of referring to the timing flag table, so that even if there are many synchronous operation elements,
It does not take a long time to start the execution, and the timing operation process can be performed quickly and easily. Further, because of the table configuration, it is extremely easy to change the contents of the timing flag table during maintenance.

[Brief description of drawings]

1 is a principle diagram of the present invention, FIG. 2 is a block diagram showing a configuration example of a printer device, FIG. 3 is a diagram showing a timing operation, FIG. 4 is a diagram showing a configuration example of a timing flag table, FIG. 5 is a diagram showing a flowchart of a timing signal synchronization program of the present invention, FIG. 6 is a diagram showing a flowchart of a conventional timing signal synchronization program, and FIG.
The figure is a diagram showing a left end sensor output, a right end sensor output, and a timing signal. 100 …… Printer mechanism section, 200 …… Printer control section, 201
... MPU, 202 ... ROM, 203 ... RAM, 204 ... output port, 205 ... driver, 206 ... bus, 210 ... timing flag table.

Claims (1)

[Claims] 1. A printer mechanism section (100) and a printer control section (200) for generating a control signal for operating the printer mechanism section (100) in synchronization with a timing signal generated by the printer mechanism section (100). ) And a timing flag table (210) in which a plurality of operation instruction data corresponding to the timing signal count value in a one-to-one correspondence are written in advance, and a printer control unit ( 200), timing signal counting means (220) for counting timing signals, and timing flag reading means (230) for reading operation instruction data corresponding to the timing signal count value from the timing flag table (210). , Processing means (24) for performing processing for executing an operation instructed by the read operation instruction data.
0) and are provided in the printer device.