Liquid-jet head, method of manufacturing the same and liquid-jet apparatus
US7604328B2 · kind B2 · utility
0Cited by
0References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2006 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Oct 20, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14491
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Included are a passage-forming substrate in which pressure generating chambers communicating respectively with nozzle orifices from which to eject ink droplets are formed; piezoelectric elements which are provided to one surface of the passage-forming substrate, and each of which is configured of a lower electrode, a piezoelectric layer and an upper electrode; and an insulation film which are provided at least areas corresponding to the piezoelectric elements in order that the insulation film can cover the piezoelectric elements, and which is made of an aluminum oxide thin film containing nitrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.