Filter for an ink jet pen
US6644797B2 · kind B2 · utility
6Cited by
10References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Jan 18, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17563
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An inkjet pen is disclosed having an interior chamber containing a pressure regulator. A filter within the interior chamber substantially surrounds the pressure regulator, providing a large filter surface area, and hence a low resistance to ink flow. The filter may be formed of a pleated filter material; the filter material may be retained by a rigid ink passage flange and a filter cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.