Importance

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Abstract

An ink jet head drive device includes a first pulse generation circuit configured to generate a common first pulse for a plurality of nozzles in an array of an ink jet head, a plurality of second pulse generation circuits, each of which is configured to generate a second pulse for one of a group of consecutive nozzles in the plurality of nozzles in the array, a width of each second pulse being set according to correction data provided for each group of consecutive nozzles, a waveform generation circuit configured to generate drive waveforms for the plurality nozzles in the array using the common first pulse and the second pulses, and a drive circuit that receives the drive waveforms and drives a plurality of actuators for ejecting ink droplets from the plurality of nozzles. Each second pulse causes a pressure chamber connected to the plurality of nozzles to expand.

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First Claim