JPS6389366A - Printing position control system - Google Patents

Abstract

PURPOSE:To print a character row while a natural printing interval is kept, by comparing two continuous characters with a predetermined combination and the controlling the printing interval between said characters. CONSTITUTION:A character/address converter circuit 3 successively stores the output code from an input character buffer 1 and converts the code of two continuous characters to the address for a printing position adjusting memory 4. Based on said address, the printing position adjusting memory 4 forms the data relating to the character interval between two continuous characters to output the same to a control circuit 5. The control circuit 5 controls the character code from the input character buffer 1 and the character interval data inputted from the printing position adjusting memory 4 corresponding to said character code. The character code is converted to printing data by a conversion table 6 to be successively outputted to a printing had circuit 7 as a signal. The printing head circuit 7 sends the printing data to a printing head to perform printing and, thereafter, the moving quantity of the printing head is determined based on the character interval data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a print position control system, and particularly to a print position control system for a serial printing type printer in which the position of the print head is not fixed.

[Conventional technology]

Conventional printing control methods for serial printing type printers include a method of converting codes and printed characters on a character-by-character basis and printing characters corresponding to specified character positions.

In this conventional printing control system, as shown in Fig. 3, the print head 8 moves at predetermined equal intervals, and the center position 9 of the print head also moves at equal intervals, so that the spacing between printed characters is always maintained. It was fixed.

1.Problems to be Solved by the Invention] - In the conventional serial printing type printer mentioned above, the spacing between each printed character is fixed, and depending on the character design, the spacing between the printed characters may be too wide or too narrow. This method has the disadvantage that the printing results in unbalanced overall printing due to scratches. This is especially true for lowercase letters, symbols, and symbols in various languages.
This was noticeable for specially designed design characters.

[Means for solving problems]

The printing position control method of the present invention includes a character-address conversion circuit that converts codes of two adjacent characters in an input character string into an address, and a printing interval between those characters that is determined in accordance with the address. A print position adjustment memory with conversion memory, a conversion table that converts codes from the input character buffer into output character patterns, and outputs from the conversion table and print position adjustment memory to the print head circuit. Print head position.

The print position control circuit includes a control circuit for controlling printing.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the invention. In FIG. 1, this embodiment has an input character buffer 1 for inputting data;
A serial printing type printer having an H-character position control circuit 2, a conversion table 6 for converting character codes into character data, and a print head circuit 7 for controlling the print head,
The input character buffer 1 can store data of at least several characters, and the data stored in this buffer is sequentially output for printing. The print position control circuit 2 includes a character-address conversion circuit 3 and a print position adjustment memory 4.
The character-address conversion circuit 3 sequentially stores the output codes from the input character buffer 1 and converts the consecutive two-character code into an address for the print position adjustment memory 4. Based on this address, the print position adjustment memory 4 creates data regarding the character spacing between two consecutive characters and outputs it to the control circuit 5.

The control circuit 5 controls character codes from the input character buffer 1 and corresponding character spacing data input from the print position adjustment memory 4, and converts the character/character codes into printing data using a conversion table 6. The output signal is sequentially outputted to the print head circuit 7 as a signal. The print head circuit 7 sends printing data to the print head to perform printing, and then determines the amount of movement of the print head based on character interval data. FIG. 2 shows an example of a printing result and the center position of the print head at that time. After printing the first character, the print head 8 is instructed by the control circuit 5 to move to the next character, moves by the instructed movement amount, and prints the second character. Furthermore, the control circuit 5 instructs the amount of movement for the combination of the second and third characters, and the next character is printed.

〔Effect of the invention〕

As explained above, the present invention has the advantage of being able to print a character string while maintaining a natural printing interval by comparing two consecutive characters with a predetermined combination and controlling the printing character interval.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing printing results in an embodiment of the invention, and FIG. 3 is a diagram showing printing results in a conventional printing position control method. .

Claims (1)

[Claims] In a printer that has a print head circuit that controls the print head, there is a character address conversion circuit that stores a character code of two consecutive characters and converts it into an address, and a print position that stores and outputs the print interval data specified by the address. An adjustment memory, a conversion table for converting an input code into a character pattern code, and a pattern from the conversion table are output to the print head circuit that controls the print pattern, and print interval data from the print position adjustment memory is output to the print head circuit. A print position control method comprising a print position control circuit including a control circuit that outputs a signal instructing a movement amount.