JPH0319858A - Dot serial printer - Google Patents

Abstract

PURPOSE:To keep printing quality equal to that of ordinary printing even by vertical 1/2 scale-down by a method wherein a printing part which prints a data by a printing data from a data judging part, and a line feed part which performs line feed of 1/2 dot content by a line feed command of 1/2 dot content from the data judging part, are established. CONSTITUTION:A printing control part 1 sends a data to a data judging part 2, and judges whether said data is ordinarily printed or is scaled down to vertical 1/2 is judged therein. When it is vertical 1/2 scale-down, the printing data is divided into a dot data on odd number order and that on even number order. The divided dot data on the odd number order are compressed to be printed with a printing part 3. Then, the data judging part 2 sends a 1/2 dot content line feed command to a line feed part 4, the 1/2 dot content line feed is performed herein, and a carrier is returned to a home position. Thereafter, the data judging part 2 compresses the dot data even number order to be printed. Thereby, printing quality of the vertical 1/2 scaled down letter can be maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dot serial printer, and in particular to portrait+reduction.

[Conventional technology]

Conventionally, this type of dot serial printer sends data from a print control section 1 to a data judgment section 2, as shown in Fig. 2, and the data judgment section 2 judges the sent data, and then processes the data for normal printing. The data is sent to the printing unit 3 for printing, and if vertical reduction is required, the data is sent to the reduction unit 13. The reduction unit 13 takes the logical sum of the first dot and second dot, the logical sum of the third dot and fourth dot, etc. of the sent data, and creates the dot pattern shown in FIG. 3, for example. On the other hand, a result as shown in FIG. 4 was obtained, and the data was sent to the printing section 3, where it was printed.

[Problem to be solved by the invention]

The above-mentioned conventional dot serial printer performs one vertical dot column by taking the logical sum of the first dot and the second dot, and taking the logical sum of the third dot and the fourth dot, and so on.
This is done for each row of dots in which the character is marked, and the character is reduced vertically and reduced, so there is a drawback that the printing quality of the vertically reduced character is lower than that of the normally printed character.

[Means to solve the problem]

The dot serial printer of the present invention includes a print control section that sends data to a data judgment section, and an instruction to judge the data from the print control section, send the print data to the print section, and perform a line break of 10 dots at the line feed section as necessary. a data judgment unit that issues
It has a printing section that prints data based on the print data from the data determining section, and a line feed section that performs line feed by 10 dots in response to a line feed command for 10 dots from the data determining section.

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram of the present invention. The print control unit 1 sends data to the data judgment unit 2, and the data judgment unit 2 judges whether the data is to be printed normally or vertically + reduced.If it is vertical + reduced, the print data is first divided into odd-numbered dot data and even-numbered dot data. The odd-numbered dot data is compressed as shown in Fig. 7 for Fig. 6, and the data is sent to the printing section 3 for printing. Sends a command to perform a line feed by + dots to the line feed unit 4,
The line feed section 4 performs a line feed for 10 dots and returns the carrier to the home position. Next, the data judgment section 2 compresses the even numbered part of the divided dot data as shown in FIG. 8, and transfers the data to the printing section 3. to print. The result is shown in Figure 5.

〔Effect of the invention〕

As explained above, the present invention includes a print control section that sends data to a data judgment section, a print control section that judges data from the print control section,
A data judgment section that sends print data to the printing section and issues a command to the line feed section to perform a line feed of 10 dots, a printing section that prints data based on the print data from the data judgment section, and a By having a line feed section that performs a line feed for 1 dots in response to a command to perform a line feed for 1 dots, there is an effect that printing quality equivalent to normal printing can be maintained even when vertical width reduction is performed.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the present invention. ■... Print control section, 2... Data judgment section, 3... Print section, 4... Line feed section. FIG. 2 is a block diagram of the prior art. 1... Print control section, 2... Data judgment section, 13... Reduction section, 3... Print section. FIG. 3 is a diagram showing a dot matrix in normal printing, FIG. 4 is a diagram showing a dot matrix when FIG. 3 is vertically and reduced in the conventional technology, and FIG. Figure 7 is a diagram showing the dot matrix when the odd-numbered dot data in Figure 6 is compressed in the present invention.
FIG. 8 is a diagram showing a dot matrix when the even-numbered dot data of FIG. 6 is compressed in the present invention.

Claims (1)

[Claims] A print control unit that sends data to a data judgment unit, a data judgment unit that judges data from the print control unit, sends the print data to the print unit, and issues a line feed command for 1/2 dot to the line feed portion, and a data judgment unit. 1. A dot serial printer comprising: a printing section that prints data based on print data from a data determination section; and a line feed section that performs a line feed of 1/2 dot in response to a line feed command of 1/2 dot from a data determining section.