Method of driving an ink-jet printhead
US7393072B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2005 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Apr 15, 2026 |
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 ink-jet printhead, the ink-jet printhead having a pressure chamber to be filled with ink, a piezoelectric actuator for varying a volume of the pressure chamber, and a nozzle, through which an ink droplet is ejected, connected to the pressure chamber, the method including applying a driving pulse to the piezoelectric actuator to change the volume of the pressure chamber, thereby ejecting the ink droplet through the nozzle due to a change in pressure in the pressure chamber caused by the change in volume of the pressure chamber, and changing a volume of the ink droplet ejected through the nozzle by maintaining a rising time of the driving pulse constant and adjusting a duration time of a maximum voltage of the driving pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.