JPS5831756A - printer - Google Patents

Abstract

PURPOSE:To facilitate the reading of printed lines by counting down by 1 the content of a counter for controllig print positions when the first print data of a line is a space code so that the first print positions of all lines are aligned. CONSTITUTION:In a printer comprising a data buffer memory for storing in sequence received print data, a counter for counting the number of data of said memory and a print unit for reading out the content of the data buffer memory when a carrier return code is received, or when the number of count reaches a normal number of digit for printing, and printing out characters, an arrangement is made wherein the content of the counter is counted down by one when the last print data of a line of which No. of count has reached to a normal number of digit of print is a character code and the first print data of the next line is a space code so that the first digit of the next line is prevented from becoming a space.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printer that receives transmitted data and prints it.

Conventional printers receive transmitted data and store it sequentially in the buffer 7 memory, and when the data stored in the buffer 7 memory reaches the number of printing digits for one line, or when a print command code is received. Then, after printing the data stored in the buffer memory in one line, the printing paper is fed one line, and the next line is printed in the same manner.

For example, as shown in the printing example in Figure 9, when the number of printing digits for one line is 64, if the 64th character "' R1 code data is received, ε, the line that has been received and stored up to that point. After sequentially printing the data for 10 minutes, select one line of printing paper, and when the RI ne printing command - code is received on the first and next line, the data on the next line will be printed.

As shown in this example, when one line of printing ends with the last character of one single 11 "cLIVIR", the first character of the next line becomes a space, so the printing position is changed. It becomes uneven, and a phenomenon of reading k(yomi) occurs.

Here, the object of the present invention is to align the embossing position of the printing on each line and make it difficult to read even if one line of printing ends with a single end and the first character of the next line is a space code. There is a way to resolve this.

Therefore, the present invention includes a data storage section that sequentially stores the received data, a printing section, and a control section, and the control section sequentially stores the received data in the data storage section. At the same time, the number of received data is counted, and when this counted value reaches the specified printing number for one line, the data counted so far in the data size storage section is outputted to the printing section.
In addition to printing on one line, when the first data for the next line is received, it is determined whether the data is a space code r or not, and if it is a space code, it includes means for counting from the next received data. The structure aims to achieve the above-mentioned objective 8. The present invention will be described below with reference to embodiments.

Figure 1 shows the printing section (1) of the printer of this embodiment. The printed part (!) is on the outer periphery of the cylindrical cam (4), which is designed so that the rotation from the droplet (2) is transmitted to the cylindrical cam (4) via the gear transmission mechanism (3). A single guide groove (5) forming a closed loop is formed. Guide groove (
5) k is the guide rod F (
7) A carrier (with which a chestnut is slidably engaged) provided movably with respect to K (carrier (8)) is loaded with a dot-type printing spatula F (9), and the cylindrical cam (4) is mounted with a dot type printing spatula F (9). )
The guide F(γ) is reciprocated according to the rotation of , and when it reaches the printing start position at the left end in the figure, the main position starts!
Make the trout work. Also, the 11th column of the cylindrical cam (4) is as follows.

The 0 paper feed position RA which is transmitted to the paper feed device a1 and the ribbon feed device - is the fee'
's-Ra (11,) is rotated once at a certain angle, and the printing paper [F
] to feed one line. In addition, in the return work I& of the bow spear 7 (8), the ribbon feeding device a1 moves one of the pair of ribbon spools (1 m, ) (124) around which both ends of the ink ribbon are wound at a predetermined angle After printing, when the other ribbon spool (1-) (iz+) is in the ink ribbon (2) position, the operation of rotating the other ribbon spool (lx-(124) by a predetermined angle is repeated.

Figure 2 shows the circuit configuration of the printer.

In the figure, the Q power is the central J611 device (CPU), which has a crystal oscillator (to) used as a clock. cp-
Detection signals from the position sensor ae are respectively provided. When the moseta (2) rotates, the print tie sensor (to) outputs a timing pulse in synchronization with the rotation. In addition, to the output layer of CPυ cost p, a motor drive rotation (material), a print head drive storage (c), and a monostable multi-vibrator (to) are connected, respectively. ) is controlled by the control signal from the CPU (goods).
drive. In addition, the single hit multi-bye break (
(to) generates a pulse having a time width of - every time it receives a signal corresponding to a character to be printed from the CPU (2). Furthermore, the print head #IF live circuit (2)
The signal corresponding to the character to be printed given from PU @ is ANDed with the output from the monostable multi-by-break (to), and the print head (9) is driven.
(Incorporated)K Input dataKPrints its own characters.

The 3Fs diagram shows a random access memory (RAM) (2) provided inside the cpvaa.

The RAMei) is 256 bytes, and contains a printer control area, a data buffer that stores transmitted data, and a counter that stores the number of received data. is provided.

Next, we will explain the effect. The data input to CPTJ (to) is sent to CCITT skin 2: $-do.
It is continuously transmitted at a baud rate of 4 & 6 baud (1 bit length 22L#). That is, as shown in Figure 4, 1 bit of start bit, 6 bits of data, and t5 bits of stop bit have a data length of 1 character (1!5IIv in total).

, For reference, CCIT? shoulder! The code is shown in Figure 6.

Now, when data is transmitted to CPU@OK, CPU
(21) receives the transmitted data, stores it in the data buffer memory (to), counts up the counter (goods), and counts up the 70 counter (goods) according to the flowchart shown in Figure 1. JN checks whether the count number is greater than or equal to the number of normal print digits (here, the number of normal print digits is 64), and furthermore, the data stored in the data buffer 7 meters U (to) k is sent to the carry 7 return code. In other words, it is determined whether or not it is a print command code. As a result of the judgment, if the counter (goods) has a count of 64 Karan or is made in the United States, and it is not a carrier return cooler,
If the number of counts in the counter is less than 64, In other words, when the number of received data is less than the normal printing digit number K11l, when a carrier return code is received, the count number of the primary counter (to) is cleared, and then one line of printing processing is performed.In this process, First, the CPU (23)
A motor drive signal is sent to the motor drive circuit @. Then, the motor drive circuit a4 moves the tatami-yu (2
) rotates. When the motor (2) rotates, the cylindrical cam (
The carrier 07 (8) begins to move parallel to the platen (6) via the print tie turbidity sensor (
A timing pulse is given to the CPU from In synchronization with this timing pulse, the CPUa outputs the data stored in the print buffer (to), that is, the signal corresponding to the character to be printed, to the FI#I write circuit 29 and the monostable multi-byte break ( (to). The monostable machining circuit (2) receives this signal and prints a pulse with a certain time width.
send to The print head drive circuit (c) takes the signal from the CPU @ and the signal from the monostable multivibrator (to) and drives the print head (9) to sequentially print characters corresponding to the received data. to be printed. The carrier (8) automatically returns when it reaches the right end in Figure 1 of the spear. In this return operation @, the printing paper [F] is fed by one line by the paper feeder aD, and the ribbon feeder al
Therefore, a certain amount of ink ribbon is fed. When the carrier (8) comes to the left end of the spear 1 diagram, the carrier (8)
), the home position sensor is activated. Then, the CPU (21) detects that the carrier (8) has reached the home position position by a signal from the home position sensor, and stops the drive of the tatami machine (2).

This completes the printing of one line, but the printed data in the data buffer is cleared.

On the other hand, if the carrier turn code is not received until the count number of the counter (to) reaches 44, when the count number of the counter (to) reaches 64, the number of received data is normally the number of print digits. When the 64th count data of the 70 counter is read out from the data buffer memory °, it is determined whether the data is a character code or not. As a result of the determination, if it is not a character code, the count number of Karan-ri (to) is cleared and the data up to the 64th count of the counter is printed on one line.

Also, if the result of the above judgment is that it is a character code, the next data is received and the data is stored in the data buffer 7 memory (
The counter is counted up, i.e., counts up to 6s, and the data at the 6s count is read from the data buffer 7 m (to), and it is determined whether the data is a character code or not. . As a result of that judgment, if it is a character code, the data of 6s count 1 of the counter (b) is counted as 1 count for the next line, the data of 66 power und 厘 is set as high phone two F@-1, and that 65
Print the data up to the count in one line. Therefore, 1
If the last data of a line and the first data of the next line are both character codes, hyphen will be printed after that one line of data is printed.

For example 1. ? As shown in Figure 7, if the last data for one line is character 2 F"E"" and the first data on the next line is literature 2 F"V", then after the 1 line data ・@ Since -1 is printed, it is possible to save time while reading the single "CLIVER" on one line and to prevent misreading.

Also, the counter (to) 6! If the s-th data is not a character code, then it is determined whether the data is a space code. As a result of the determination, if it is not a space code, the data at the 65th count is set to count 1 for the next line, and the data up to the 64th count are printed on one line. In addition, in the case of space two, the count number of the counter (b) is counted down @1'' and the data up to the 64th count is printed on one line.This allows the first space for the next line to be The code is ignored, the data for the next line is counted from the next received data, and that counted data is printed. Therefore, even if the first data on any line is a space code, the printing of each line 1. For example,
As shown in Figure 8, the end of one line is single 111”cLIV.
Even if the first data for the first line ends with the last character -1 of Ilage and becomes a space code, the first space code for the next line is ignored and the printing position of each line is aligned. It is possible to eliminate the difficulty in reading caused by uneven printing positions.

According to the present invention, when the first data is received, 1, if the data is Space Two R, it is counted from the next data to be paid, and the counted value reaches the number of digits printed in the regular electric current for one line. The data that has been counted and stored in the data storage section is output to the printing section and printed, so even if the first data on each line is a space hood, the first Because the printing position can be aligned on each line without the first digit being space-to-FK,
Difficulty in reading can be resolved.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of a printing section showing an embodiment of the present invention;
The figure is a block diagram showing the circuit configuration, Figure 6 is a block diagram showing the RAM, Figure 4 is a print sample for input data, and Figure 9 is a print sample showing a conventional printing mode. (1)...Printing section, ■...CPU as a control section. (To) Data puffer memory as data record 411.

Claims (1)

[Claims] (1) a data storage unit that sequentially stores received data;
It includes a printing section and a control section, and the control section sequentially stores the received data in the data storage section, counts the number of received data, and sets the counted value to the specified number of printing digits for one line. When the first data of the next line valve is received, the data counted up to that point in the data storage unit is outputted to the printing unit to print one line Ilc, and when the first data of the next line valve is received, the data is A printer characterized in that it includes means for determining whether or not there is a space hood, and counting from next received data in the case of a space hood.