Ink-jet cartridge with pressure adjustment device
US6293666A · kind A · utility
10Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1999 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Oct 25, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17513
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A pressure adjustment device in an ink cartridge employs an elastic air bag in communication with the atmosphere through a ventilation hole in a connection body which is installed in a top wall of the cartridge housing. Response to pressure changes is increased by a spring connected between a bottom end of the air bag and a bottom wall of the cartridge housing which applies a pulling force to the bottom end of the air bag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.