Liquid ejecting apparatus and method of driving liquid ejecting head
US7934786B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2009 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Aug 12, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04596
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid ejecting apparatus includes a liquid ejecting head including pressure generation chambers communicating with nozzle openings for ejecting a liquid and pressure generation units which cause pressure variations in the pressure generation chambers. A driving unit supplies, to the pressure generation units, a driving signal including an expansion element for expanding the pressure generation chambers. A contraction element contracts the pressure generation chambers and a re-expansion element expands the pressure generation chambers before the liquid is ejected from the nozzle openings by the contraction element. The re-expansion element includes a primary expansion element at the contraction element side that expands the pressure generation chambers. A secondary expansion element has at least a variation portion having a voltage variation ratio different from a voltage variation ratio of the primary expansion element in continuation to the primary expansion element and expands the pressure generation chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.