Method of driving inkjet recording head and inkjet recording apparatus
US6705696B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2001 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Jul 27, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04593
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of driving an inkjet recording head designed to eject an ink droplet (67) via an ink nozzle (62) communicated to a pressure chamber filled with ink by generating a pressure wave in the pressure chamber by applying a driving voltage to a piezoelectric actuator of the inkjet recording head. The driving voltage waveform has a voltage rise portion (11) for contracting a volume of the pressure chamber (61) and a voltage fall portion (12) for expanding the volume of the pressure chamber. A rise time t1 of the voltage rise portion (11) and a voltage fall time t2 of the voltage fall portion 12 are set smaller than an inherent vibration period Ta of the piezoelectric actuator. An ink droplet having a smaller diameter can be produced, thereby improving the printing precision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.