Constant pressure ink reservoir for an ink jet printer
US6428152B1 · kind B1 · utility
18Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 27, 1999 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Jul 27, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17513
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for controlling the pressure in an ink reservoir of an ink jet printer, including a casing and a piston movable relative to the casing and defining therewith a variable-volume chamber communicating with the ink reservoir, the piston being biased to maintain a pressure difference between the variable-volume chamber and the outside, wherein the piston is biased mainly by gravitational forces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.