Actuator having ceramic substrate with slit(s) and ink jet print head using the actuator
US5617127A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 1, 1993 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Dec 1, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14387
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An actuator including a ceramic substrate and at least one piezeoelectric/electrostrictive element formed on the substrate is disclosed. The ceramic substrate includes a spacer plate having at least one window which provides at least one pressure chamber, each window being substantially closed by a closure plate and a connecting plate. The spacer plate, closure plate and connecting plate are formed from respective ceramic green sheets which are laminated on each other and fired into an integral ceramic structure as the ceramic substrate. The connecting plate has at least one slit which corresponds to each pressure chamber. Each piezoelectric/electrostrictive element is disposed on a portion of the closure plate defining the corresponding pressure chamber, so as to change a pressure of the corresponding pressure chamber. Also disposed is an ink jet print head using the actuator as described above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.