Printhead cartridge having a fluid valved breather
US5742312A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1997 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Feb 26, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17513
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet printhead cartridge having a fluid valved breather. The ink jet printhead cartridge includes a housing having an air inlet, an ink outlet, a first chamber, and a second chamber. The first chamber contains a supply of ink and is substantially free of ink-retaining foam. The second chamber includes an ink-retaining foam which saturates with ink for supply to an ink jet printhead. An air transfer passageway connects the first chamber to the second chamber so that air pressure affects the level of ink in the first chamber thereby maintaining a level of ink in the second chamber sufficient for supplying ink to the ink jet printhead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.