JPS6255510B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printing paper length setting circuit, and more particularly to a printing paper length setting circuit for a data output device.

Generally, the length of the printing paper of a data output device is usually displayed in inches, and the length is 3 to 14 inches, or a fraction thereof is 1/4,
1/3, 1/2, 2/3, 3/4 inch, etc. are used. For example, 3 1/2 inches. Conventionally, in order to set the length of this printing paper, two switches are used: a switch for determining the range from 3 to 14 inches, and a switch for determining the number of preset fractions, and some paper lengths are set using these switches. In this case, the line spacing is
If 1/8 inch/line is used, a disadvantage arises in that the combination specifies a length that is not in units of lines. For example, if you specify 1/8 inch/line and the fraction switch is 1/3 inch. This 6/8
If you use a switch that allows you to define each line spacing, it has the disadvantage of requiring a lot of identification, resulting in a switch with a large number of circuits.Also, because of the paper length management, it is difficult to print at a certain point. Paper length setting switch and 1/6, 1/8 inch/
The data of the row switch is sampled, and if an unauthorized operation is performed during the process, the data being controlled and the switch instruction data will become unrelated, leading to confusion for the operator.

In addition, as a conventional example, the paper length can be set to 1/1 by switching the number of lines.
8. In some cases, this is done in combination with a 1/6 inch/line switch, but in this case, it is easy to use as paper feed control data for the output device, but the paper length is handled in inches. The disadvantage is that the operator must convert the number of lines to inches. Furthermore, since the number of rows is set, there is a disadvantage that the number of switch discrimination circuits increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a printing paper length setting circuit that prevents malfunctions when setting paper length, allows easy determination of paper length setting conditions, and simplifies handling of setting data.

According to the present invention, there is provided a first switch for setting the length of paper, and a number n of lines to be printed per unit length of the paper.
a first counter that counts input clock pulses and counts up by a value n corresponding to the number of printed lines; and a second switch that sets the number of printed lines; a second counter for counting, and a display section for displaying the set value of the second switch and the first and second counters; displays the content of the first counter in the numerator of the fraction, displays the content of the second counter as an integer value of the paper length on the display unit, and simultaneously displays the content of the second counter on the integer value of the paper length on the display unit. A printing paper length setting circuit is proposed, which is characterized in that it sends the value displayed on the paper to a paper feed control system.

Embodiments of the printing paper length setting circuit according to the present invention will be described in detail below with reference to the accompanying drawings.

The attached figure shows one embodiment of the circuit according to the present invention,
As shown in the figure, switches SW ₁ and SW ₂ , counters 1 and 2, a receiving circuit 3, a decoder 4,
It is configured to include a multiplexer 5, a display section 6, and a paper feed control system 7. counters 1 and 2 are 2
It is a forward counter, and a counting clock pulse is input to its input terminal, as well as a setting input from the receiving circuit 3. Switch SW ₁ is a setting switch that is pressed down until the desired value is reached, and switch SW ₂ is a switch that sets whether there are 6 or 8 lines per inch. The outputs of switches SW ₁ and SW ₂ are input to a receiving circuit 3. On the other hand, a gate signal is input to the receiving circuit 3, and this gate signal is a signal that enables the switches SW ₁ and SW _2. For example, when the printing device is feeding paper,
During printing, signals from switches SW ₁ and SW ₂ are ignored. The setting output of the receiving circuit 3 is applied to counters 1 and 2, and the output specifying the number of lines is applied to the display section 6c to display the number of lines per inch as a denominator of a fraction, and is applied to the multiplexer 5 to control this. do.

On the other hand, the counting pulse input to the counter 1 starts counting by the setting input from the receiving circuit 3, and the counted value is sent to the decoder 4, and the contents of the decoder 4 are input to the input specifying the number of lines per inch applied to the multiplexer 5. Therefore, it operates as a hexadecimal or octal counter. In other words, if switch SW ₂ is set to 6 lines and switch SW ₁ is turned on, counters 1 and 2 will count up and counter 1 will be 0.
→1→2→3→4→5→0 and this last 0
At this time, the counter 2 becomes "1". The contents of counters 1 and 2 are displayed on display sections 6b and 6a, respectively.

In this way, switch SW ₁ is pressed down while looking at values 6a, 6b, and 6c on the display until the desired value is reached. Thus, the value of counter 2 is the length in inches, and the value of counter 1 is a value indicating the fraction thereof, so that the length of the set printing paper can be indicated in inches. The same applies to the case of 8 lines. Note that the values of counters 1 and 2 are not only displayed on the display section 6, but also sent to the paper feed control system and used as set values for paper feed control. In this case, the value of counter 1 indicates the fraction of the unit length and also indicates the number of lines per inch.

By setting counter 1 to a counter for the number of lines per inch, that is, a hexadecimal counter for 6 lines/inch and an octal counter for 8 lines/inch, you can freely press switch SW ₁ . The paper length can be set and a display is provided for easy operation. According to this embodiment, the length can be set up to 15 7/8 inches.

The circuit according to the present invention described above has the following advantages. In other words, (a) only one paper length setting switch is required.

(b) Since a counter for the number of lines set per inch is used, it is possible to prevent paper length settings that are not set in units of lines.

(c) Paper length can be set freely.

(d) Even if the operator performs an arbitrary operation, the paper length being used in the control circuit can be confirmed on the display unit.

That is, according to the present invention, the conditions for setting the paper length are easy, malfunctions can be prevented, and handling is simple, and the effects of the present invention are extremely large.

[Brief explanation of the drawing]

The attached figure shows one of the printing paper length setting circuits according to the present invention.
A block diagram of an example is shown. In the attached figure, SW ₁ and SW ₂ are switches, 1 and 2 are counters, 3 is a receiving circuit, 4 is a decoder, 5 is a multiplexer, 6 is a display section, and 7 is a paper feed control system.

Claims (1)

[Claims] 1. A printing device comprising a first switch for setting the length of paper and a second switch for setting the number n of lines to be printed per unit length of the paper, which counts input clock pulses and calculates the number of lines to be printed. a first counter that counts up at a value n corresponding to;
A second counter for counting the count-up of the first counter, and a display section for displaying the set value of the second switch and the first and second counters are provided, and the setting of the second switch is provided. The content of the first counter is displayed in the numerator of the fraction of the displayed value on the display unit, and the content of the second counter is displayed as the numerator of the fraction of the display value on the display unit. A printing paper length setting circuit characterized in that the value displayed on the display unit is sent to a paper feed control system at the same time as the value is displayed numerically.