Method and apparatus for refilling a print cartridge having a reservoir pressure of less than ambient pressure
US5596358A · kind A · utility
4Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1994 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Oct 31, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17506
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Apparatus and method for refilling print cartridges for computer controlled printers. The apparatus creates a closed system that is isolated from ambient pressure. The apparatus utilizes both a vacuum in the ink reservoir in the print cartridge and vertical displacement of the refill reservoir with respect to the reservoir in the print cartridge to draw refill ink into the print cartridge to an operating level and to an operating pressure of less than ambient pressure. Within this closed system the apparatus dislodges the closure on the print cartridge and reseats a replacement closure during refilling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.