Fluid jet ejector
US4520375A · kind A · utility
41Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 1983 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | May 13, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/14314
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A fluid jet ejector, such as is used in an inkjet printer head, is provided by a pair of spaced capacitor plates, one of which is a thin diaphragm, preferably of semiconductor material, such as silicon. The capacitor plates may be photolithographically developed. Impressing a time varying voltage on the capacitor causes the diaphragm to be set into mechanical motion. A reservoir containing fluid, such as ink, is contiguous the diaphragm and has a nozzle through which fluid exits responsive to diaphragm motion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.