Driving device and driving method of a liquid drop ejecting head, and liquid drop ejecting device
US7641319B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 2006 |
| Grant date | Jan 5, 2010 |
| Priority date | — |
| Expiry date | Jan 4, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04588
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is provided a driving device of a liquid drop ejecting head, includes: a piezoelectric element for causing expulsion of liquid drops from an ejector which ejects liquid drops, a first electrode of the piezoelectric element being connected to a predetermined voltage; a switching section connected to a second electrode of the piezoelectric element, and able to switch among three states which are a charging state of the piezoelectric element, a discharging state of the piezoelectric element, and an open state; and a control section controlling switching of the switching section in a cycle which is shorter than a charging time or a discharging time of the piezoelectric element by the switching section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.