Head drive apparatus of inkjet printer and inkjet printer
US8240798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2007 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Sep 15, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04595
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A head drive device of an inkjet printer having a nozzles and corresponding actuators that jet liquid drops. A drive section that generates a drive signal to the actuators. The head drive device includes a drive waveform signal which is used as a reference of a signal to control drive of the actuators. A modulating section modulates a pulse of a drive waveform signal generated by the drive waveform generating system. A low pass filter smoothes a power-amplified modulated signal subjected to the power amplification by the digital power amplifier and supplies the signal as a drive signal to the actuators. A frequency characteristics adjusting section adjusts frequency characteristics of the low pass filter as a function of the number of the actuators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.