Liquid ejection head and liquid ejection apparatus
US9527283B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2015 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Dec 16, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14491
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid ejection head includes a vibration portion that serves as a wall of a pressure chamber having a shape extending in a first direction; at least one piezoelectric element that is disposed on the vibration portion at an opposite side to the pressure chamber; and an extracting portion that electrically connects the piezoelectric element to external wiring. The piezoelectric element includes a first electrode, a second electrode, and a piezoelectric material layer between the first electrode and the second electrode. In a plan view, the first electrode has a planar shape that is included in shapes of the second electrode and the pressure chamber, and the extracting portion protrudes from a peripheral edge of the first electrode so as to cross a long side of an inner peripheral edge extending in the first direction of the pressure chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.