Method and apparatus for replenishing an ink cartridge
US5280300A · kind A · utility
173Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1991 |
| Grant date | Jan 18, 1994 |
| Priority date | — |
| Expiry date | Aug 27, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/17586
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates generally to refillable ink cartridges for computer controlled ink jet printers and more specifically to apparatus for refilling collapsible ink bags which are maintained at sub-atmospheric pressure within such equipment. A mass of porous capillary material disposed in an ink supply passageway provides a capillary valve which prevents flow of ink when one side of the valve is unwetted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.