JPS6322664A - Printing control system of vertically enlarged characters - Google Patents

Abstract

PURPOSE:To prevent reduction of a printing speed in the printing process of vertically enlarged characters by detecting the availability of a developed character pattern per a pattern area and suspending the printing process corresponding to the pattern area to control printing of a character pattern on the next line. CONSTITUTION:Printing data of an upper stage is detected and then is developed to a designated digit of a line buffer 11 by enlarging characters vertically while referring to a character pattern generation part 5. At the same time, a pattern memory 13 is read to perform a logic sum operation and again the data is stored in the pattern memory 13. When a pattern development has been completed, the content of the pattern memory is read, and if either one of the bits of the memory is selected, the line read is printed as such, and if not selected, a pattern on the next line is developed referring to a printing data table 4.

Description

[Detailed Description of the Invention] (Summary) In a serial dot printer that prints multiple lines to form vertically enlarged characters, 1. A means is provided for detecting the presence or absence of a vertically enlarged character pattern for each line, and if no pattern exists in the line. To provide a printing control method that shifts to printing control of the next line pattern without printing that line.

[Industrial application field]

The present invention relates to printers, and particularly to a printing control method for vertically enlarged characters.

When printing vertically enlarged characters with a serial dot printer,
The pattern is expanded vertically based on the character code, and the vertically expanded characters are synthesized by line feed printing.
In order to prevent gaps between lines caused by paper feeding errors, a pattern is developed in which dots overlap between lines.

Therefore, for example, in the case of double vertically enlarged characters, a pattern area of three times the size is provided, and the characters are printed with line breaks three times.

When the pattern area is expanded in this way, depending on the type of literature, there may be pattern areas (rows) where no pattern exists even if the pattern is expanded vertically, and especially when printing figures etc. by vertically expanding a code, the pattern may not be present. A row that does not exist occurs.

However, conventionally, the pattern area required for vertically enlarged characters has been printed with line breaks regardless of the presence or absence of a pattern.

Therefore, there is a need for a printing control system that solves the above problems and improves the reduction in printing speed caused by vertically enlarged character printing.

[Conventional technology]

Figure 3(a) is an explanatory diagram of vertically enlarged character printing, Figure 3(b) is a block diagram of a conventional serial dot printer, and Figure 3(a) is a block diagram of a conventional serial dot printer.
C) shows a flowchart of vertically enlarged character printing operation.

Figures 3(a)-(1) show the vertically enlarged printing of the character rAJ, and Figure 3(a) shows a normal version in which the character rAJ is patterned in a 24x24 dot pattern area and serially printed with 24 sets of pins. It is.

If you want to enlarge this to double, as shown above, you can create a 24x24 pattern area in the vertical direction and enlarge the pattern vertically, and print each area using line feeds, but the paper feed at reverse line feeds etc. Due to errors, there may be gaps between lines.

For this reason, as shown in C, there are 3 sets in the vertical direction (top).

A method is adopted in which pattern areas (middle and bottom) are provided and the patterns are overlapped so that the patterns are continuous even in the case of the largest paper feed error.

FIGS. 3(a)-(2) show an example of a pattern in which "=" is expanded by the method (c), and shows a state where it falls within the pattern area of l'fJi.

Note that Figure 3 (al) is a vertical enlargement centered on the center of the pattern, and when instructing vertical enlargement, the center pin, which is the center, is usually specified, so the pattern area must be determined depending on the character type. I can't.

Therefore, if a vertically enlarged character exists, it is printed with three line breaks (including spaces).

The details of the printing will be explained with reference to FIG. 3(bl) and FIG. 3(C).

In FIG. 3(b), printing information received via interface l is stored in reception buffer 2, and when printing,
One line of print information is read by the print data development section 3 and is developed into the print data table 4.

In the print data table 4, as shown in FIG.

Corresponding addresses of the character pattern generation section 5 are stored for each middle and bottom pattern area, and the pattern development section 6 sequentially refers to the table data, and if there is vertical expansion,
First, the upper row is expanded vertically and developed in the line buffer 11.

When the upper pattern development is completed, the main control unit 7 specifies a predetermined line feed amount and prints according to the contents of the line buffer 11.

Subsequently, the middle pattern and the lower pattern are sequentially printed in the same manner as above.

[Problem to be Solved by the Invention 3] As explained above, in conventional vertically enlarged character printing, the line feed is performed a number of times corresponding to the pattern area for vertically enlarging.

However, even if the pattern is expanded twice as in -2=, if only one or two pattern areas are required, unnecessary line breaks and spacing will be performed.

For this reason, there is a problem in that the printing speed decreases, especially when printing tables etc. in vertical enlargement.

In view of the above-mentioned problems, it is an object of the present invention to provide a printing control method that improves the reduction in printing speed in vertically enlarged character printing.

[Means for solving problems]

In order to achieve the above object, the printing control method of the present invention
As shown in the diagram explaining the principle, a detection means (15) is provided to detect the presence or absence of the developed character pattern for each pattern area, and it is possible to detect that the development of the character pattern in the corresponding line is completed and the character pattern does not exist. When a character pattern is detected, the printing corresponding to the pattern area is stopped and the printing of the next line of character patterns is controlled.

[Effect]

For example, to expand a pattern into a line buffer for one line,
Although this is performed for each column of the dot matrix, a means is provided for ORing the pattern information for each row constituting the column.

Thereby, when the pattern development is completed, it is possible to determine whether there is a pattern in that line, and if there is no pattern, printing is not performed in that line, and the pattern development in the next line is performed.

As described above, unnecessary printing operations can be reduced and the printing speed in vertically enlarged character printing can be improved.

〔Example〕

An embodiment of the present invention will be described with reference to FIG.

FIG. 2(a) is a block diagram of the serial dot blink of the embodiment, and FIG. 2(b) is an operation flowchart.

In FIG. 2 (al), 13 is a pattern memory in which the multi-bit pattern stored in the line buffer 11 is ORed bit by bit during pattern development. 12 is a pattern development section which performs vertical expansion. The obtained pattern is stored in the line buffer 11, and the logical ORed data of the pattern information is stored in the pattern memory 13.Others are as shown in FIG. 3 (the same reference numerals as BL represent the same objects).

In the serial dot printer configured as described above, the vertical enlargement operation is performed as follows.

The pattern development unit 12 reads one line of print information developed by the print data development unit 3 from the print data table 4, and if there is a vertically enlarged character, it reads the upper line.

Select the relevant rows in the order of middle and bottom.

First, the upper print data is detected, vertically enlarged while referring to the character pattern generation section 5, and expanded to a designated digit of the line buffer 11, and the pattern memory 13 is read and a logical OR operation is performed. Store in.

When the pattern development is completed, the contents of the pattern memory 13 are read, and if any bit in this memory is set, that line is printed as is, and if it is not set, the print data table 4 is referred to. Expands the pattern for the next line.

As described above, printing is controlled by detecting the presence or absence of a pattern in the pattern area provided for vertically enlarged characters for each line, so there is no need to perform printing operations on lines where no pattern exists, and printing of vertically enlarged characters is possible. The printing speed can be improved.

〔Effect of the invention〕

As explained above, the present invention detects the presence of a pattern in a pattern area to be vertically expanded in vertically expanded character printing, and determines the printing operation for that line.
The effect of improving the decrease in printing speed in vertically enlarged printing is extremely large.

[Brief explanation of drawings]

Figure 2 is an explanatory diagram of the principle of the present invention, Figure 2 (a) is a block diagram of the serial dot printer of the embodiment, Figure 2 (b) is an operation flowchart of the embodiment, and Figure 3 (a) is enlarged vertically. FIG. 3(b) is a block diagram of a conventional serial dot printer; FIG. 3(C) is a flowchart of a conventional vertically enlarged character printing operation. In the figure, 1 is an interface, 2 is a reception buffer, 3 is a print data development section, 4 is a print data table, 5 is a character pattern generation section, 6 is a pattern development section, 11 is a line buffer, 2 is a pattern development section, 13 is a pattern memory. FIG. 1 Block of the serial dot printer according to the embodiment shown in FIG. 2
Figure (a) Vertical enlarged printing 3 Figure (a)

Claims (1)

[Claims] A printing control method for vertically enlarged characters in a serial dot printer that develops vertically enlarged character patterns by providing a plurality of pattern areas for storing character patterns, the method comprising: A detection means (15) is provided to detect each pattern area, and when the development of the character pattern in the relevant line is completed and it is detected that no character pattern exists, printing corresponding to the pattern area is stopped and the next line is started. A printing control method for vertically enlarged characters characterized by controlling printing of character patterns.