Sidewall actuator for a high density ink jet printhead
US5227813A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Aug 16, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/14209
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sidewall actuated channel array for a high density ink jet printhead. The sidewall actuator includes a top wall, a bottom wall and at least one elongated liquid confining channel defined by the top wall, the bottom wall and sidewalls. The actuator sidewall is comprised of a first actuator sidewall section formed of a piezoelectric material poled in a first direction perpendicular to a first channel and attached to the top wall, a second actuator sidewall section attached to the first sidewall section and the bottom wall, and means for applying an electric field across the first actuator sidewall section and perpendicular to the direction of polarization. When the electric field is applied across the first sidewall section, the actuator sidewall engages in a motion which produces an ink ejecting pressure pulse in the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.