Method and device for controlling released ink droplet quantity of driven ink jet recording head

Application Number: 00107248
Application Date: 2000.04.29
Publication Number: 1273175
Publication Date: 2000.11.15
Priority Information: 1999/5/6 JP 125775/1999
International: B41J2/045
Applicant(s) Name: NEC Corp.
Inventor(s) Name: Ota Takashi
Patent Agency Code: 11021
Patent Agent: zhu haibei
Abstract An apparatus for driving an ink-jet recording head includes a piezoelectric device, a drive waveform generation circuit, a waveform extraction circuit. The drive waveform generation circuit generates a drive waveform in which n basic waveforms are connected in series, each of the n basic waveforms having a single period, where n is an integer equal to or greater than 2. The waveform extraction circuit which extracts m (m is an integer, and 0<=m<=n) of the n basic waveforms as a print drive waveform based on an externally supplied print data, and applies the print drive waveform to the piezoelectric device. Thereby, an ink is discharged from a nozzle based on a distortion of the piezoelectric device.