Patent ID: 7722142
Filing Date: 2010-05-25
Classification: B41J

Abstract:
1. An ink-jet printer comprising: an ink-jet head in which are disposed a plurality of nozzles that are divided into a plurality of nozzle groups; a plurality of actuators which are provided to respectively correspond to the plurality of nozzles and which are divided into a plurality of actuator groups respectively corresponding to the plurality of nozzle groups; a plurality of drive circuits which are provided respectively for the plurality of nozzle groups and each of which outputs a drive signal used for ejecting an ink, to the plurality of actuators of a corresponding one of the plurality of actuator groups; and a controller which controls the ink-jet printer to perform printing such that, by driving any of the plurality of actuators which are determined on the basis of print data, the ink is ejected, toward a recording medium, from any of the plurality of nozzles that correspond to said any of the plurality of actuators; and a reference-signal outputting section which outputs, to said each of the plurality of drive circuits, a common reference signal of a constant current; wherein said each of the plurality of drive circuits includes: