Ink jet recording head and ink jet recording apparatus comprising the same
US6502928B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1999 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Jul 28, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet recording head includes pressure generating chambers communicating with associated nozzle orifices and piezoelectric elements provided in a one-to-one correspondence with the pressure generating chambers. Each of the piezoelectric elements includes a lower electrode provided in an area corresponding to the pressure generating chamber via an insulating layer, a piezoelectric layer provided on the lower electrode, and an upper electrode provided on a surface of the piezoelectric layer. Each of the piezoelectric elements includes an active part provided in an area facing the pressure generating chamber to be driven substantially, and an inactive part not to be driven even having the piezoelectric layer continued from the active part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.