The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2012
Filed:
Dec. 22, 2006
Kunio Tabata, Shiojiri, JP;
Atsushi Oshima, Shiojiri, JP;
Osamu Shinkawa, Chino, JP;
Toshiyuki Suzuki, Shiojiri, JP;
Tomoki Hatano, Higashiomi, JP;
Kunio Tabata, Shiojiri, JP;
Atsushi Oshima, Shiojiri, JP;
Osamu Shinkawa, Chino, JP;
Toshiyuki Suzuki, Shiojiri, JP;
Tomoki Hatano, Higashiomi, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A head drive apparatus of an ink jet printer having: a plurality of nozzles for jetting liquid drops that are provided for an ink jet head; a plurality of actuators provided in correspondence to the nozzles; and a drive unit that applies a drive signal to the actuators, wherein the drive unit comprising: a drive waveform generator that generates a drive waveform signal being standard of a signal to control drive of the actuators; a modulator that modulates a pulse of a drive waveform signal generated by the drive waveform generator; a digital power amplifier for amplifying power of a modulated signal subjected to the pulse modulation by the modulator; and a low pass filter for smoothing an amplified digital signal subjected to the power amplification by the digital power amplifier and supplying the signal as a drive signal to the actuators.