PRINTHEAD CORRECTION METHOD AND APPARATUS, PRINTHEAD CORRECTED BY THIS APPARATUS, AND PRINTING APPARATUS USING THIS PRINTHEAD.

摘要

A printhead correction apparatus for correcting a printhead having a plurality of printing elements and memory means capable of storing data, comprising: first printing control means for applying n signals to the printhead, and experimentally printing a first printing pattern on a recording medium n times using the printhead; selecting means for selecting one of n signals in units of a predetermined number of printing elements in such a manner that the printed image density is equal or close to a reference density, based on n printer first printing patterns; and transmitting means for transmitting the characteristics of the signal selected by said selecting means as correction data to the memory means of the printhead.