JPS6067167A - Character printing method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (a) Technical Field of the Invention The present invention comprises a print head in which a plurality of pins are arranged vertically at intervals of 1/n inch and a mechanism for feeding paper at a width of 1/m inch. The present invention relates to a printing device (1/m>1/n), and relates to a method of printing a printing boundary surface between print heads when printing one enlarged character with multiple paper feeds.

(b) Background of the technology When enlarging and printing characters, etc., until now it was common to enlarge them horizontally, but recently, printing devices that can enlarge and print vertically are also being put into practical use. It has become.

With the development of technology, various technical methods have been implemented to enlarge printed characters in the vertical direction, but by applying conventional technology, the enlarged printed characters can be produced at a low price and of good quality. Practical use of printing devices is desired.

(C) Prior Art and Problems A method for vertically enlarging printed characters in a conventional printing device will be described with reference to two drawings.

Figure 2 shows an example of creating enlarged characters, where (A) shows the relationship between the print head and paper feed, and (C) shows a character pattern that has been enlarged twice in the vertical direction. Note that FIGS. 2(B) and 2(D) will be described later (embodiments of the invention).

In the figure, 10 is the print head, 11 is the pin spacing, and 12 is the print head.
is the paper feed interval, 13 is the print character string before paper feed, 14
indicates the printed character string after paper feeding. Note (1)
-(5) indicate columns, and ■ to ■ indicate sodopine to the print, respectively.

A conventional method for vertically enlarging printed characters uses a print head 10 in which a plurality of bins (■ to ■) are arranged at predetermined intervals in the vertical direction.
When printing by paper feeding by a predetermined width (1/m inch width), the output format of the boundary between the print character string 13 before paper feed and the print character string 14 after paper feed is fixed to the interval. There is a way to print it. This method is based on the positioning of the print head 1o on the boundary surface (i.e. the print character string 14 after one paper feed).
(positioning) cannot always be done accurately, so the print character string 13 before paper feed and the print character string 14 after paper feed.
If the printing on the boundary surface overlaps or is too far apart, the printing density on the boundary surface may be uneven compared to the printing density on other areas, resulting in poor print quality.

In order to improve printing quality, a method of providing an enlarged character pattern for each enlarged character may be considered, but this method has the drawback of requiring a significant increase in hardware.

(d) Object of the Invention The object of the present invention is to provide a novel method for outputting enlarged characters in the vertical direction that eliminates the above-mentioned drawbacks, particularly when printing is performed by moving the print head in the horizontal direction.

The object of the present invention is to realize a character printing method that partially changes and adjusts dot data on the boundary surface of the print head in odd-numbered columns and even-numbered columns using an exchange pattern to make the printing density uniform.

<6) Structure of the Invention The present invention is a character printing method in which a print head is scanned multiple times in the width direction of printing paper to print characters in a dot configuration,
The dot data printed in the next scan adjacent to the dot data printed in the first scan is thinned out and printed, thereby making the printing density on the print head boundary surface uniform. This can be achieved by a character printing method.

(f) Examples of the invention The present invention will be explained below with reference to the drawings.

Fig. 1 shows an embodiment of the printing device according to the present invention, Fig. 2 shows an example of creating enlarged characters, (A) is a diagram of the relationship between the print head and paper feed, and (B) shows characters stored in the character generator. An example of the pattern, (C) shows an example of a character pattern enlarged twice in the vertical direction, and (D) shows an example of the final print.

In the figure, 1 is a character code buffer circuit, 2 is a character generator, 3 is an enlargement control circuit, 4 is an image buffer circuit,
5 and 6 are exchange patterns, 7 is a multiplexer circuit, 8 is an AND circuit, 9 is a driver circuit, 10 is a print head, 1
1 is the bin interval, 12 is the paper feeding interval, and 13 is the print character string before paper feeding.

14 indicates the printed character strings after paper feeding.

Note that (1) to (5) are columns, and ■ to ■ are printed.

a is the printed character string 13. before paper feeding. b indicates the printed character string 14 after paper feeding.

This embodiment consists of a character code buffer circuit 1 which stores character codes transferred from the host system, a character generator 21 which generates the corresponding character according to the character code, and a vertical and horizontal enlargement of the output character from the character generator 2. An enlargement control circuit 3 that controls whether or not to enlarge; an image buffer circuit 41 that stores characters processed by the enlargement control circuit 3; an even number of printed character strings 13 before paper feeding and printed character strings 14 after paper feeding; Replacement pattern 51, which gives the exchange pattern to the column, feeds the paper, and then gives the exchange pattern to the odd-numbered column of the printed character string 14.Exchange pattern 6, exchange pattern 5゜Exchange pattern 6, provides long sword information such as vertical enlargement instructions, etc. as necessary. Multiplexer circuit 7 which selects and outputs to AND circuit 8. Output information from the image buffer circuit 4 and the multiplexer circuit 7
An AND circuit 8. performs an AND operation on the output information from the . It consists of a driver circuit 9 which drives the dot pins (■ to ■) to a predetermined print based on output information from the AND circuit 8, and a print head 1o which prints characters using five bins (■ to ■).

Note that the bin (■ to ■) interval 11 and paper feed interval 12 of the print head 10 are defined by the character size dot configuration, but in this embodiment, the 24 x 24 dot configuration is basically used, and the bin (■ to ■) of the print head 10 is defined by the character size dot configuration. Between Mfr 11 is 1/16
0 inch, and the paper feed interval 12 was set in units of 1/12 inch. Further, this embodiment shows an example in which the character °H' is printed in an enlarged manner, and the printed character string 13 before one paper feed is set to 3 columns, and the printed character string 14 after one paper feed is set to column b.

It is assumed that 5 columns (columns (11 to (5)) are printed.

The character code 'H' is determined by the character code of the buffer circuit engineer.
" pattern (the pattern shown in FIG. 2(B)) is read out from the character generator 2. When the pattern of the character "Ho" read out from the character generator 2 is output to the enlarged character control circuit 3, the enlarged character control circuit 3 is enlarged as shown in FIG. 2(C), and the enlarged character °H is outputted to the image buffer circuit 4 and stored therein. Next, the a part of the enlarged character "Ho" stored in the image buffer circuit 4 is read out along with the exchange pattern 5 in the order of a column (1), a column (2), and a column (5). Printing is performed using the print head 10.

Next, the AND circuit 8 calculates the logical product of the vertical enlargement instruction, the information on the b column, and the odd column from the multiplexer circuit 7, and the exchange pattern 6, and as a result, the paper is fed (1/12 inch). Back row column (1), 5th row column (2)...5
The print head 10 prints in the order of column (5).
- At this time, the information in the odd columns and the exchange pattern 6 indicate that the information in the bin number ■ of the odd columns in column b (columns (1), 2, columns (3), and columns (5)) will not be printed.

Through the above printing operations, the final image is printed in the form shown in FIG. 2(D). The above example was explained using the character "H" whose vertical enlargement can be easily explained, but any other character can also be enlarged with good appearance using the same exchange pattern 5.6 in the same way. printed.

(g) Effects of the invention As described above, in odd columns and even columns when the print head moves laterally to print.

Part of the dondo data on the boundary surface of the print head is changed by the exchange pattern to make the printing density uniform, which has the effect of making it possible to print high-quality enlarged characters.

[Brief explanation of drawings]

FIG. 1 shows an implementation diagram of a printing apparatus according to the present invention. FIG. 2 shows examples of enlarged character creation. In the figure, 1 is a character coater sofa circuit, 2 is a character generator, 3 is an enlargement control circuit, 4 is an image buffer circuit, 5 and 6 are exchange pattern 9 multiplexer circuits, 8 is an AND circuit, and 9 is a 10 is a print head, 11 is a pin interval, 12 is a paper feeding interval, 13 is a printed character string before paper feeding, and 14 is a printed character string after paper feeding. of? (A) (C) (υ(2)σJ (47(5)

Claims (1)

[Claims] A character printing method in which a print head is scanned multiple times in the width direction of printing paper to print characters in a dot configuration, and the dot data printed in the next scan adjacent to the dot data printed in the first scan is printed. A character printing method characterized by thinning and printing