JPS5840208B2 - Injiseigiyosouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for obtaining print information and executing printing.

In a normal printing control device, it is necessary to generate a signal for waiting when printing another piece of information while printing one piece of information, or a signal for specifying the number of lines to feed the paper after printing is completed.

Therefore, the conventional device shown in FIG. 1 is specially equipped with a device for generating the signal.

That is, numerical information 1 obtained from an arithmetic processing device such as a computer is transferred to a print information storage device 7 constituted by a shift register or the like in response to a print start signal 2.

At the same time, the print control flip-flop 8 is controlled by the signal 2, and the print control signal 6 which is the output of the flip-flop 8 and the output 5 of the information storage device 7 are applied to the print processing device 9 to execute printing.

At the same time, the other output 3 of the flip-flop 8 indicates to the arithmetic processing unit that printing is in progress.In this way, the flip-flop as a device for controlling the print processing unit 9 has no processing operation due to its structure. It was difficult to obtain a separate and simplified device even when miniaturization was required.

The present invention aims to improve the above-mentioned drawbacks and provide a simple control device that can perform printing without having a separate signal generation device, and utilizes digits outside the print information storage device in the print information storage device. The main point is to

The present invention will be explained in detail below with reference to the drawings.

In FIG. 2, which is a block diagram, reference numeral 10 denotes a print information storage device, which is composed of, for example, delay type flip-flops connected in series.

Pif is an input terminal for information to be printed obtained from an arithmetic processing device such as an electronic computer, and Pout is an output terminal for printing information, which is applied to the print processing device 9.

11 is a flip-flop that distributes the delay time of 1 bit length of stored information, 12 and 13 are NAND circuits, 14 and 15 are AND circuits, 16 is an OR circuit, 17 and 18 are NOT circuits, Ps
t is a print start signal application terminal, Pf is a print end information application terminal, t1t2. T9 indicates an operation control signal application terminal.

FIG. 3 shows a time relationship diagram explaining the operation of FIG. 2.

In FIG. 3, φ1. φ2 is the basic clock signal, φ1
has an appropriate time delay so as to be in the middle of φ2, and has the same repetition frequency, and the print information storage device 1
Drive the flip-flops that constitute 0.

t1 to t4 are generated from φ2 of the basic clock signal, and the pulse width is the interval between adjacent pulses of φ2, and four φ2
A pulse train having an interval of clock pulses T1 to T indicates a pulse train having a pulse width of 7 tl pulses and having a pulse width of the starting and ending ends of t1 to t4, respectively.

That is, T, -T9 are signals having each bit of t1 to t4, and correspond to each digit of the information storage device 10. The length from T1 to the next T1 is one word.

In this case, if the print information storage device 10 has a storage capacity for 9 digits, the information to be printed is stored in the 1st to 8th digits of the storage device 10, and the 9th digit is unrelated to the print information. It is a digit.

Immediately before the print information is transferred from the arithmetic processing device to the print information storage device 10 via the terminal Pif, a logic value of 1 (hereinafter abbreviated as "1") is entered into the first bit in the ninth digit.

This signal is used as a signal indicating the operation of printing, is output from the arithmetic processing unit, and is introduced into the print information storage device 10.

This signal is held for one word period of the printer (corresponding to one revolution of the print drum).

When the paper is fed two lines after printing is completed, the second bit of the corresponding digit is set to "1".

(Two-line paper feeding means performing so-called double basing, which takes two lines of blank space, and is effective for making printing easier to see.

) After that, a print start signal is generated and applied from Pst,
When print information is applied from Pif, it is sequentially transferred to the print information storage device 10 via an AND circuit 15 and an OR circuit 16.

The print start signal is kept at "1" during the entire period from T1 to T9.

If there is information currently stored in the storage device 10 at that time, it becomes an input to the AND circuit 14 and is fed back.

However, since the signal output from Pst is a logic value O (hereinafter abbreviated as rOJ) due to the NOT circuit 18, the output of the AND circuit 14 is "O".

Therefore, the output from the AND circuit 14 is
It is never entered as 0.

Then, the print information is output from the first digit to the output terminal Pout of the storage device 10 and printed by the print processing device 9.

When the printing of the print information is completed and the first paper feed signal Pf1 of one word long time obtained from the paper feed signal bit is generated, the input t1 of the NAND circuit 13 is activated by the "1" signal of the first bit t1 of T9. ．． Pf1. Since T9 exists, the same circuit 1
The output of 3 becomes "0".

Since the output of the NAND circuit 13 is the input of the AND circuit 14 that holds the print information, the output of the AND circuit 14 becomes rOJ in the digit signal T9 and bit signal t1, and the digit signal T0, “0” in bit signal t1
" is input, and the signal in the first bit of the ninth digit of the print information becomes "O".

That is, at this point, the signal indicating that printing is in progress has disappeared.

Next, the inputs of the NAND circuit 12 are the paper feed signal Pf and the digit signal T.
0, the bit signal t2 and the output of the NOT circuit 17.

The input of the NOT circuit 17 is the output of a flip-flop 11 which receives the output of the information storage device 10 and has a delay time of 1 bit length.

Therefore, at the time of the digit signal T9 and bit signal t2 at the time when the first paper feed signal Pf1 is generated, a signal indicating that printing is in progress appears at the output of the flip-flop 11, so the output of the not circuit 17 becomes "0". AND circuit 12
The output of is "1".

Bit signal t1. Since t2 are mutually exclusive signals, the output of the AND circuit 13 is "1" and the signal Pst is "0", so the output of the NOT circuit 18 is "1".

Therefore, the signal indicating two paper feeds accumulated in the second bit of the 9th digit is held, and becomes the output of the information storage device 10 again. “1” is output from the information storage device 10 in the signal T9 and the bit signal t1, and the second paper feed signal Pf
Generates 2.

This time, since the output of the information storage device 10 is "0" at the time of the digit signal T0 and the bit signal t1, the output of the NOT circuit 17 is rOJ at the time of the digit signal T9 and the hit signal t2.
becomes.

Therefore, at this time, the output of the NAND circuit 12 becomes "O", the output of the AND circuit 14 becomes "0", and the information storage device 10
, the digit signal T9 and the bit signal t2 are input with "O", and the "twice paper feed signal" mentioned above also disappears.

After the print processing device 9 operates to feed the paper using the second paper feed signal Pf2, the digit signal T0 and the bit signal t1゜t2
At this point, the content of the information storage device 10 becomes "0", so the print processing device 9 ends the print process.

Next, the information to be printed will be transferred to the storage device 10, but at this time, as described above, bit addition is performed immediately before the transfer.

This new information is printed next with two blank lines from the previous information.

In this way, according to the present invention, by checking the output of the device in which the information to be printed is stored at the time when the signal of the digit in which the information to be printed is not stored and the bit signal is generated, it is possible to determine whether the printing operation is in progress. It is possible to perform one detection as to whether or not these signals are present, and it is easy to control printing operations such as waiting and line feed based on the presence or absence of these signals.

Therefore, since no special device is used for these controls, a simple control device can be easily obtained as a whole.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional device, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIG. 3 is a time relationship diagram explaining the operation of FIG. 9...Print processing device, 10...Print information storage device.

Claims (1)

[Claims] 1. A printed information storage device with an information storage capacity equal to or greater than the number of digits to be printed, and the information to be printed is stored in the printed information storage device, and at least the information to be printed is printed in a storage location of the storage device that does not store the information to be printed. 1. A print control device comprising means for accumulating print control signals including signals indicating that the print control device is in operation, and means for reading the print control signals and controlling the print processing device.