JPS6144678A - printer - Google Patents

Abstract

PURPOSE:To provide a continuously printed underline which has a clear and even shade from beginning to end and economize ribbon consumption by making a ribbon feed to a normal level and iterating a last underscore printing action in the same location. CONSTITUTION:The feed of an antistrike-type ink ribbon is set to a normal level at the time of autounderscore printing, and the feed of a carriage is set to approx. 1/3-1/2 of the normal feed. In addition, a last underscore printing action is iterated at the same position so that the last half may not be thin in shade.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to auto-underscore printing when using a multi-strike type ink ribbon suitable for printers, particularly petal-type type wheel (so-called daisy-wheel) printers.

[Conventional technology]

FIG. 2 shows a perspective view of the main parts of the printing mechanism in a conventional O type daisy-wheel printer. 1 is prana/, 2
is the printing paper, 3 is the daisy wheel, 4 is the wheel drive motor, 5 is the ink ribbon, and 6 is the ribbon cartridge (
cassette), γ is a hammer solenoid, 8 is a pulse motor for feeding the ribbon, and 9 is its transmission member.

With this printer, the multi-strike function allows so-called auto-underscore printing, which automatically prints underscore characters (signs) in succession based on commands from the host computer, several times. Use a type ribbon or a 7-applid ribbon.
When this is done, the operation normally follows as shown in FIG. In the figure, R is a multi-strike ink ribbon, and A is
〃 Shows the width of the code. 1-2"... is the order of each printing operation, during which the ink ribbon R is approximately 1/2 of the type width T for each printing operation (the example in the figure shows the case of 1/2 for illustrative purposes) ) is carried out in the direction of the arrow (so-called ribbon feed), and the ink is drained as shown in the figure.In other words, the right side of the new print (3) is treated as a single stroke compared to the double stroke of other characters. As a result, the right side of the printed 〃-〃 symbol becomes lighter due to development.
There is a tendency for the appearance to become unsightly due to the shading of the seams between each print.

Therefore, in order to obtain clear and beautiful underscore prints using a cartridge (or 7-stroke) type multi-strike type or 7-applik type ink ribbon that can only use narrow ribbon width <- tracks, the following steps are required. A method is proposed. That is, 1 1) The amount of carriage movement is the normal feed amount, and the ribbon feed amount is about 2 to 3 times the normal amount.

2) The ribbon feed rate should be the normal feed amount, and the carriage movement should be about 273 to 172 mm.

[Problem 5 to be solved by the invention] However, depending on the conventional proposed method as described above, in the case of the above method 1), there is a disadvantage in terms of replacement means and cost as it consumes a large amount of ink ribbon. , also method 2
), the disadvantage was that the final undersurface printing remained pale.

In contrast to these 1, if a so-called jingle strike type mylar film ink ribbon is used, the ribbon can be fed by the width of the code for each printing operation, and a new section is always used, resulting in clear printing. However, the amount of ink ribbon used increases, which is disadvantageous in terms of cost.

This invention was developed in consideration of the above-mentioned problems.In auto score printing, the angle lines formed by continuous printing may have little difference in shading, the use of ink ribbon is small, and The aim is to make the final underscore print part 5 so that it does not become too pale.

[Means for solving problems]

For this reason, in this invention, when performing auto underprinting using a multi-strike type ink ribbon, the ink ribbon feed amount is the normal feed amount, and the carriage movement amount is approximately 1/3 to 1/2 of the normal amount. And, moreover!
6 is constructed so that the add/das core printing operation at the end of & is repeated at the same printing position. - [Examples] The present invention will be explained below based on Examples.

FIG. 1 is an explanatory diagram of the automatic dust core printing method according to the present invention. FIG. 1 (α) shows a data string from a host computer, and FIG. 1 (A) shows the operation sequence of the printer. 1o A, B, C, D.

E indicates the print position of each underscore character, 11.12 indicates the command from the host computer, and 13, 14, 15.16 indicates the order of each printer operation shown in the figure (A). Use the underscore character 〃-〃 to clearly indicate the position of each skew.
They are intentionally shifted up and down to avoid duplication. R indicates the feeding direction of the multi-strike type ink ribbon.

The operating sequence of the printer is clear in FIG. 1(b), where 13 is the first A/D core character, 14 is
Carriage is code width 1. The character when moved by /2, and 15 indicates the final 77 das core character.

According to the previously proposed method 2), automatic underscore printing is terminated at this stage (5), but if left as is, the printing in 1A at the rear end will be light. For this reason, the above-mentioned uneven shading is solved by printing the dusky core characters 16 on the present invention.

A detailed flowchart of the above operation sequence is shown in FIG.

In addition, FIG. 5 shows a schematic block diagram of the control path of the self-propelled ivy according to the present invention for reference. Each of the 19 CPUs, including each slave CPU-1, slave CPU-2, and slave CPU-3, drives the drive circuit 20 according to the command, and divides the power between each motor M and the slide/id S as shown in the figure. These controls can be easily implemented using known conventional techniques, so details will be omitted.

〔Effect of the invention〕

As explained above, according to the present invention, even though automatic underscore printing is performed using a multi-strike ink ribbon in row 5, the ribbon feeding claw is set to the normal feeding amount, and the final underscore printing operation is the same. Since it is configured to repeat at different positions, it is possible to obtain the effect that the angle lines formed by continuous printing are clear until the end without causing shading, and that less ink ribbon is used.

[Brief explanation of the drawing]

FIGS. 1(α) and (b) are explanatory diagrams of the automatic underscore printing method according to the present invention, FIG. 2 is a perspective view of the main part of the printer mechanism of a daisy-wheel printer, and FIG. 3 is a multi-strike type ink An explanatory diagram of the state of removing ink from the ribbon, and FIG.
FIG. 5 is a schematic block diagram of the control circuit of the printer of the present invention. 2... Printing paper 3... Daisy wheel

Claims (1)

[Claims] A printer that prints on printing paper via a multi-strike ink ribbon, characterized in that the printer is configured to repeat the final underscore printing operation at the same position when continuously performing automatic underscore printing.