Printing apparatus and method of controlling printing therein

Details Printing apparatus and method of controlling printing therein Printing apparatus and method of controlling printing therein

2008-07-22

2008-07-22

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

11276194

ABSTRACT:
A printing apparatus prints by causing a carriage, on which is mounted a printhead having a plurality of printing elements, to scan across a printing medium, the plurality of printing elements being divided into a plurality of blocks based upon entered print data. The apparatus includes a first comparison circuit for performing a comparison to determine whether a number of printing elements driven simultaneously in the blocks exceeds a first reference threshold; a second comparison circuit for performing a comparison to determine whether a number of times continuous drive of the simultaneously driven printing elements has been performed exceeds a second reference threshold; and a generating circuit which if a result of comparison by the first comparison circuit exceeds the first reference threshold and a result of comparison by the second comparison circuit exceeds the second reference threshold, adds reference pulse data and corrected pulse data to thereby generate driving pulses of corrected pulse width.

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patent: 6969155 (2005-11-01), Umezawa
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patent: 9-11463 (1997-01-01), None
patent: 9-11504 (1997-01-01), None

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