Patent ID: 7401882
Filing Date: 2008-07-22
Classification: B41J

Abstract:
1. A printing apparatus for printing 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, said apparatus comprising: first comparison means for performing a comparison to determine whether a number of printing elements driven simultaneously in the blocks exceeds a first reference threshold; second comparison means 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 of a number of times such drive is performed; and generating means which if a result of comparison by said first comparison means exceeds the first reference threshold and a result of comparison by said second comparison means exceeds the second reference threshold, is for adding reference pulse data and corrected pulse data to thereby generate driving pulses of corrected pulse width, wherein on a basis of the result of the comparison by said first comparison means to the effect that the first reference threshold has been exceeded, said second comparison means performs a comparison to determine whether the number of times continuous drive of the simultaneously driven printing elements has been performed exceeds the second reference threshold.