JPS59136267A - Determination of printing position - Google Patents

Abstract

PURPOSE:To enable the position of printing on a printing paper to be set up by a method in which printing is made orderly for one dot each by a line printer, and when printing position to be set up is printed, the address of the printing element is set up on a memory. CONSTITUTION:A power source is connected to a line printer 1 in which the printing elements of a printing head 2 are arranged on L-L line, a print positioning mode is selected, and a paper 3 is sent in the direction of X. Printing is then made orderly for one dot each in the direction of Y to form a dot array 4. In this case, at the moment a desired print starting position 41 is printed, a switch 5 is pushed, and the address of the printing element is housed as a print starting address on a rewritable memory. Furthermore, at the moment a print ending position 42 is printed, the address of the printing element is housed as a print ending address on the memory. The setting of a relative printing position to the paper is made possible and variation in the printing positions is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical field of the invention The present invention relates to a line printer, and particularly to a line printer that prints a line of dots in one line.
This invention relates to a method for setting the print start or end position in a line printer that prints characters or figures line by line.

(b) Technology background In recent years, with the progress of office automation, kanji output printing has been performed, but the printers used for this mostly use a dot printing method, while line printers have adopted a dot printing method. In this case, it is possible to output figures on the side of letters, and higher speed printing is possible than with conventional X-Y plotters.

In addition, when a thermal method is used as the dot printing method, the density of the printed dots can be varied by controlling the heat generation of each printing element in the print head, giving gradation to the output characters and figures. becomes possible.

In this way, line printers using the dot printing method have the potential for wide-ranging applications.

(C) Prior Art and Problems Conventionally, the print start position and print end position in the above-mentioned dot printing type line printer have been fixedly set. In other words, the position address of the printing element corresponding to the printing start position and end position among the printing elements (for example, about 1000 heating element elements arranged in one line) that make up the print head is stored in a dedicated memory. (ROM>
This was stored on the computer, and was read out every time each line was printed, and the designated print position on the program was controlled using this as a reference.

For this reason, when the print head is replaced, it is inevitable that the print position will change due to variations in each print head or the accuracy of the installation of the print head, and if the paper width changes, the specified print position in the program If there is a discrepancy with the paper, there is a drawback that printing is performed on areas where there is no paper.

(d) Purpose of the Invention An object of the present invention is to provide a method that allows an operator to arbitrarily set the printing start position and end position after actually confirming the printing position.

(e) Structure of the Invention The present invention provides a dot printing type line printer that includes:
Print one dot at a time, and when each dot at the position corresponding to the print start position and print end position to be set is printed, an external signal is input and the position is stored in a rewritable memory (RAM). It is characterized by setting.

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

In the figure, the print head 2 of the printer 1 includes, for example, one
023 printing elements (e.g. heating element: not shown)
are arranged on the LL line.

Now, when the power is turned on and the print positioning mode is selected, the paper 3 is fed in the direction of arrow X, and printing is performed one dot at a time in the direction of arrow Y.

As a result, dot row 4 is formed, but at the moment when the desired printing start position, for example 41 in the figure, is printed,
When the switch 5 is pressed, the address of this printing element (absolute address specified by the printer) is stored in the RAM as the printing start address.

Further, when the switch 5 is pressed at the moment when a desired print end position, for example 42 in the figure, is printed, the position address of this printing element is stored in the RAM as the print end address.

In actual printing, the designated print position on the program is corrected based on the 60 print interval and end position set as above, so it is not affected by the position fluctuation factors mentioned above. This makes it possible to prevent inconveniences such as printing at a predetermined position and printing at a position that deviates from the width of the paper.

The RAM capacity required for setting the print position above is approximately several 10 bytes at most, and even if it is shared with RAM for other control programs, there will be virtually no effect. is retained until the power is turned off or position setting mode is selected again. Also,
If the above position setting mode is not selected when the power is turned on, printing is performed at the specified position on the program based on the absolute address.

(g) Effects of the Invention According to the present invention, it is possible to set the printing position relative to the paper, and there is no need to make corrections in the program (there is an effect that it is possible to improve the efficiency of printing work). .

[Brief explanation of the drawing]

The figure is a diagram for explaining a print position setting method according to the present invention. In the figure, 1 is the printer, 2 is the printing gutter, 3 is the paper, 4 is the dot row, 5 is the suction gutter, number 41 is the 1st character start position, and 42 is the print end position.

Claims (1)

[Claims] In a dot printing type line printer, one dot is printed one by one, and when each dot is printed at a position corresponding to the print start position and print end position that should be set, an external signal is input to rewrite the position. A print positioning method characterized by setting on the memory.