REGULATION OF HEAD ALIGNMENT OF PRINTER

摘要

PURPOSE:To easily regulate the bias of alignment of the head elements of each head unit by a method in which the reading address of data memory in a printer is read out by biasing it correspondingly to the mechanical bias of alignment. CONSTITUTION:In case where there is an alignment bias (delta) for two dots upwardly in relation to the reference position SU of the upper row for head element 3 in the head unit 1b of magenta, data to be sent to head element 3 with alignment bias (delta) among data to be sent are sent from a position LU biased for two dots from the reading reference position SU of the upper row to the earier orders of data writing in order to regulate the bias (delta). By controlling the reading address of data memories 12A-12B according to the direction and magnitude of alignment bias of the head element 3, the alignment bias of each head element 3 in the head units 1A-1D can be easily and exactly regulated.