Ink valve for marking systems
US4555719A · kind A · utility
44Cited by
15References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1983 |
| Grant date | Nov 26, 1985 |
| Priority date | — |
| Expiry date | Aug 19, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7836
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fast acting ink valve adapted to be used in conjunction with the nozzle of an ink jet printing system is disclosed. A flexible diaphragm modulates flow through a valve chamber. A spring biases the diaphragm to a sealed position to prevent flow. Ink pressure in the marking system unseals the diaphragm permitting flow. Unlike check valves, the invention has minimal pressure drop due to the location of the bias spring outside the ink flow path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.