Method and apparatus for priming an ink jet pen
US4998115A · kind A · utility
27Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1988 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Sep 20, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/16526
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for priming a thermal ink jet pen is disclosed. Using an ink reservoir fabricated of a foam material, forced air pressure applied to the foam causes ink therein to flow through the foam and into the printhead. A holder for a rubber air bladder operates in conjunction with a pen cartridge holder whereby an air hole in the reservoir container is aligned with the bladder. Manually pushing the cartridge against a spring results in a squeezing of the bladder, causing air to exert a compression-like pressure directly on the foam reservior.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.