Impact-valve printhead for ink jet printing
US5039997A · kind A · utility
23Cited by
15References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1991 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | Jan 22, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/05
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet chamber communicates with an ink reservoir through an opening in a diaphragm plate. The chamber also includes a nozzle through which ink may be ejected on demand. A mass, such as a ball, is reciprocally driven into the diaphragm plate. The ball, upon striking the diaphragm, closes the chamber opening, pressurizing the ink in the chamber to eject a droplet from the nozzle. The ball is driven by a printer driver wire to which it may be attached. Large arrays may be constructed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.