In an inkjet head, both tones and smoothing can be represented suitably by means of a small number of drive waveforms. There are provided: a drive waveform generator unit (46) for generating drive waveforms for emitting a ink particle to form dots of a same size within one cycle that is an integral fraction...http://www.google.de/patents/US20030025744?utm_source=gb-gplus-sharePatent US20030025744 - On-demand inkjet printer and drive method and drive circuit for same
