Ink jet apparatus with preloaded diaphragm and method of making same
US4418355A · kind A · utility
34Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1982 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Jan 4, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/15
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet apparatus comprises a chamber having a diaphragm preloaded to a deformed position when the transducer is in the de-energized state. Upon energization of the transducer, the diaphragm returns to a substantially planar condition so as to permit filling of the chamber from an inlet prior to firing a droplet from a chamber orifice when the transducer is de-energized and the diaphragm again assumes it preloaded, deformed condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.