Patent ID: 8801128
Filing Date: 2014-08-12
Classification: B41J

Abstract:
1. A device for driving a liquid discharge head, which discharges droplets from a nozzle of a liquid discharge head by generating a driving signal for operating a discharge energy generation element that is provided in response to the nozzle and supplying the driving signal to the discharge energy generation element, comprising: a basic driving waveform generation unit generating a basic driving waveform including a plurality of jet pulses and a non-jet pulse just before the last jet pulse of the plurality of jet pulses in one recording period; and a driving signal generation unit removing a part of the pulses from the basic driving waveform by maintaining at least the last jet pulse and generating a driving signal that is applied to the discharge energy generation element, wherein the driving signal generation unit is provided with a waveform selection unit which can selectively generate: a first driving signal that is configured by maintaining the last jet pulse of the plurality of jet pulses in the basic driving waveform and including the non-jet pulse just before the last jet pulse, and a second driving signal that is configured by maintaining the last jet pulse and at least another jet pulse of the plurality of jet pulses in the basic driving waveform and removing at least the non-jet pulse.