Ink-jet recording head having a vibration plate prevented from being damaged and ink-jet recording apparatus for using the same
US6869170B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2001 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Oct 16, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14491
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided is an ink-jet recording head that prevents a vibration plate thereof from damage attributed to drive of a piezoelectric element, and an ink-jet recording apparatus. There are provided within a region facing the pressure generating chamber, a piezoelectric active portion, and a piezoelectric non-active portions, the piezoelectric non-active portions being provided on both end portions of the piezoelectric active portion in a longitudinal direction thereof. An electrode wiring is drawn out of an upper electrode which is provided on one end portion in the longitudinal direction of the pressure generating chamber. There is also provided a protection layer on the other end portion in the longitudinal direction of the pressure generating chamber for protecting the vibration plate. Rigidity of the vibration plate is thereby increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.