JPS61143169A - Operating panel circuit for printer - Google Patents

Abstract

PURPOSE:To enable a set font selection selection information to be maintained even when a power source is turned ON and OFF, by providing a printer with a display selecting type operating panel which comprises a counter backed up by a back-up part and a display part for decoding the content of the counter and display the decoded information. CONSTITUTION:A power source 9 for the printer supplies the printer with an AC input (a) in response to turning-ON of a power source switch 90, and the back-up part 8 backs up a CMOS RAM in accordance with an input from a battery or a capacitor 80. The operating panel part 1 comprises 7 LEDs corresponding to font-selecting positions, in addition to a FONT SELECT switch 100. Each time the switch 100 is depressed, a count signal is sent to a divide-by-10 counter 101. A decoder 102 decodes font selection information outputted from the counter 101, and sends a signal to an LED driver 103, which drives an LED corresponding to the font selection information. In addition, the decoder 102 buffers the output from the counter 101, and outputs a BCD signal 106.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an operation panel circuit for a printer.

[Conventional technology]

Figure [1] About a printer using a conventional operation panel circuit
An outline will be explained using ilit-. Fig. 4 is a circuit diagram showing an example of a conventional link, Fig. 5 is a schematic diagram of the operation panel section in Fig. 4, and Fig. 6 is a plan view showing an example of the font selection switch in Fig. 5. It is a diagram.

In FIG. 4, the printer device includes an operation panel section 11, an input/output board 2. Microprocessor 3. Program memory 4. It includes a RAM 5 and a printer control unit 6,
The operation panel section 1' is equipped with a font selection switch 11 as shown in FIG.
) is sent to the input/output boat 2 as a signal 12. The font selection switch and 11 are used to select the type of type used in the printer, and as shown in Figure 6, automatic character font identification (indicated by A. A-P86, 7.8), font type classification (DUAL-PLASTIC, MONO-PLAS)
(displayed as TIC) and its subcategory (displayed as 10, 12°, 15). When the power of the printer device is turned off, the RAM
The font selection information is stored in the computer 5, and when the power is turned on, a program in the program memory 4 reads out the font selection information, executes processing, and displays it on the operation panel section.

The most important point here is the power supply of the printer device (not shown)
Even if the font selection switch 11 is turned off, the BCD signal 12 from the font selection switch 11 maintains its previous state when the power is turned on again. Therefore, it is not necessary to change the font selection switch 11 unless the typeface of the printer is changed.

[Problem that the invention seeks to solve]

The above-mentioned conventional printer operation panel is inconvenient because even if the font selection switch or font switch is switched due to the replacement of typefaces, the display is disabled after the process is executed, so the display selection method of the present invention described later When I try to use the control panel,
Significant changes to the printer device, such as redesigning the operation panel, changing the signal lines between the operation panel and the input/output board, and 4-bit 0MO8RAM backed up by programs and batteries for display on the operation panel? (Second
Not only is it necessary to develop a program to save or recover the font selection information (as shown in the figure) and to combine those programs, but the usage efficiency and cost of the CMO8 AMq become issues, so it is not easy to do so. The disadvantage is that the display selection type operation panel cannot be used.

[Means for solving problems]

The printer operation panel circuit of the present invention includes a counter that counts a count signal from an input section, a backup section that backs up the counter with either a battery or a capacitor, a decoder that decodes the contents of the counter, and a decoder for decoding the counter. and a display section for displaying the results.

〔Example〕

Next, the present invention will be explained with reference to FIGS. 1 to 3.

FIG. 1 is a circuit block diagram showing one embodiment of the operation panel circuit of the printer of the present invention, and FIG. 2 is a circuit diagram of the printer showing an example of use of the operation panel circuit in FIG. 1.
FIG. 3 is a plan view of a display selection type operation panel showing an example of the operation panel section in FIG. 1.

In FIG. 2, the same components as in the conventional example are given the same reference numerals as in FIG. 4. That is, the printer device of this usage example has an operation panel part l, an input/output board 2. Microprocessor, 3. Program memory 4, 几AM5. It is equipped with a printer control section 6.0 MO8 RAM 7, a backup section 8 and a device power supply 9. The device power supply 9 supplies AC input to the printer device when the power switch 90 is turned on, and the power supply 9 supplies AC input to the printer device.

The input from the battery or capacitor 80
MO8RAM7″f: Back up.

Further, the operation panel section 1 is arranged as shown in FIG.

A decimal counter 101 counts the count signal generated by turning on the font switch 100 in the input section, a decoder 102 decodes the contents of the 10 decimal counter 101, and a light emitting diode (hereinafter referred to as L) that displays the decoding result.
ED)1 and an LED driver 103 that drives the LED. The font switch 100 is FONT 8E shown in FIG.
Each time the LECT switch is pressed, a count signal 'e is sent to the decimal counter 101. lO advance counter 1
01 is a 1-digit decimal counter that advances the count according to the count signal and outputs the numerical values 10'' to ``9'' to the decoder 102.
After outputting ``I9'', the next value is ``@0''. Furthermore, the decimal counter 101 is manufactured using a CMOS process, and the normal power supply current is less than a few μA.
7, and is backed up by the backup 104 when the +5V power supply is turned off. The power source of the backup unit 104 is a battery or a battery that can be recharged by the above-mentioned +5■ power source, or a capacitor 10 of several farads.
5, and since it is necessary to back up only the IO counter 101, if a lithium battery is used, the lifespan will be equivalent to that of a printer device.

Next, in Fig. 3, the operation panel l is FONTSEL.
In addition to the ECT switch 100, there are seven LEDs (lO/P86°12/P87,
l 5/P88. DUAL-PLA8TIC.

MONO-PLA8TIC, A, P8, person-8) t-
I'm ready.

The decoder 102 decodes the font selection information output from the decimal counter lot and provides a signal to the LED driver 103, which drives the LED (shown in FIG. 3) corresponding to the font selection information. Further, the decoder 102 is connected to the lO base counter 10! The output is buffered and a BCD signal 106 is output. The BCD signal 1
Since 06 is equivalent to the BCD signal 12 (shown in FIG. 3), the operation panel section 1' (shown in FIG. 4) and K operation panel section l (shown in FIG. 3) of the conventional printer are used. It is possible to do so.

According to this embodiment, the user of the printer device can select a font while looking at the display of the lit LED on the operation panel section. In other words, FONT8ELECTx1y1
Each time you press 00, the KLED lights up in sequence, and when the LED display that shows the desired font is reached, select FONT 8ELECTx.
Yes? It is sufficient to complete 100 operations.

〔Effect of the invention〕

As explained above, the present invention provides a display selection type operation panel that includes a counter backed up by a backup section and a display section that decodes and displays the contents of the counter, rather than introducing a conventional printer device. The set font selection information can be maintained even when the power is turned on and off, and the program can be changed from 1 program memory to 0MO8.
It requires the addition of RAM and changes to the microprocessor, but has a powerful effect. Furthermore, since the amount of information saved in the 0MO8RAM is small, problems in terms of usage efficiency and cost can be solved.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram showing one embodiment of the operation panel circuit of the printer of the present invention, and FIG. 2 is a circuit diagram of the printer showing an example of use of the operation panel circuit in the first cause.
3 is a plan view of a display selection type operation panel showing an example of the operation panel section in FIG. 1, FIG. 4 is a circuit block diagram showing an example of a conventional printer, and FIG. 5 is a plan view of the operation panel section in FIG. 4. The block diagram and FIG. 6 are plan views showing an example of the font selection switch in FIG. 1, 1'...Operation panel section, 2...
Input/output port, 3...Microprocessor, 4
・・・・・・Program Mesori、5・・・・・・几AM
, 6. Old... Printer control unit, 7,...0MO8
RAM, 8,104...Backup section, 9.
...Device power supply, 11... Font selection switch, 12, 106-old...BCD signal, 80,105
--------Battery 102...Decoder, 103
...LED driver.

Claims (1)

[Claims] a counter that counts the count signal from the input section;
A backup unit for backing up the counter with either a battery or a capacitor, a decoder for decoding the contents of the counter, and a display unit for displaying the decoding result, and outputting the contents of the counter as an information signal. Characteristic printer operation panel circuit.