Patent ID: 8057001
Filing Date: 2011-11-15
Classification: B41J

Abstract:
1. An imaging apparatus comprising: a liquid discharge head configured to discharge recording liquid as one or more recording liquid droplets; a drive waveform generating unit configured to generate a drive waveform including at least two drive signals within one printing period; and a drive unit configured to input tone data, select a relevant drive signal from the drive waveform via a switch that switches on/off according to the tone data, and apply the selected drive signal to the liquid discharge head; wherein the drive signals of the drive waveform include a first drive signal for forming one dot with a large droplet in one printing period, and at least one of a second drive signal for forming at least two dots with at least two small droplets in one printing period and a third drive signal for forming at least two dots with at least two medium droplets in one printing period, and wherein the liquid discharge head, the drive waveform generating unit, and the drive unit are configured to realize serial imaging using an imaging mode in which a main scanning resolution is arranged to be higher than a sub scanning resolution except for a case in which one dot is formed by the large droplet within one printing period in which case the main scanning resolution and the sub scanning resolution are arranged to be equal.