Printing system for dot-matrix printer

Assignee: Oki Electric Industry Co Ltd

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Filing: 1989-02-24

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Granted: —

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Expires: 2009-02-24

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Abstract

Abstract The present invention relates to a printing system for a dot-matrix printer for enabling to print a dot-matrix character, graphic patterns at the speed n-times (n is more than 2) higher than a normal printing mode as well as enabling to print at the normal speed printing mode by processing a basic dot matrix of the normal printing mode for generating a dot-matrix of n-times speed printing mode. The printing system comprising: a means (4, 15) enabling to drive a print head (1) at a speed n-times higher than a normal driving speed; a dot-matrix generator means (19) for processing the basic dot-matrix to generate a dot-matrix for the n-times speed printing mode in the manner that a non-printing dot is included in the number of at least n-1 in the same row between the printed dot and the next dot to be printed. According to the present invention, inasmuch as the non-printing dot is included in the number of at least (n-1) during the period between the time when each dot pin of the print head effected the printing and the time when the next printing is effected, whereby high speed printing can be effected.

Inventors

👤 Yoshimura Oki Electric Industry Co Ltd. Kohtaroh

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-11-09 12:35

CPC Classifications

G; G06; G06K; G06K15/00; G06K15/02; G06K15/10; G06K2215/00; G06K2215/0002; G06K2215/0062; G06K2215/0071; G06K2215/0074

Claims Analysis

Total Claims: 3

Claim 1

Independent Claim 138 words

A printing system for a dot-matrix printer enabling to print a dot-matrix character, graphic patterns at the speed n-times (n is more than 2) higher than a normal printing mode as well as enabling to print at the normal speed printing mode by processing a basic dot matrix of the normal printing mode for generating a dot-matrix of n-times speed printing mode, said printing system comprising: a means (4, 15) enabling to drive a print head (1) at a speed n-times higher than a normal driving speed; a dot-matrix generator means (19) for processing the basic dot-matrix to generate a dot-matrix for the n-times speed printing mode in the manner that a non-printing dot is included in the number of at least n-1 in the same row between the printed dot and the next dot to be printed.

Claim 2

Dependent Claim 138 words

Claim 3

Dependent Claim 145 words

A printing system for a dot-matrix printer according to claim 1, wherein the dot matrix generator means (19) comprises: a print data memory (26) for supplying a print data to the print head (1); shifting means composed of memories in the number of (n-1) for successively shifting output data of said print data memory (26), input and output of each memory (21, 22) being serially connected to each other; a first arithmetic logic means (23) for executing an operation so that the output data of each memory of said shifting means (21, 22) are ORed; and a second arithmetic logic means (25) for executing an operation so that a present print data of a basic dot-matrix and a resultant data executed by the first arithmetic logic means (23) are exclusively ORed and the result of the execution is output to said print data memory (26).

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