Filtering techniques for printhead internal contamination
US6626522B2 · kind B2 · utility
29Cited by
3References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Sep 11, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14467
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Techniques are described for constructing filter type features capable of entrapping particle contaminants to eliminate printing defects. These techniques utilize photo-imageable barrier material to fabricate various shapes and forms to reduce feature sizes. Several of these techniques utilize barrier material of height less than barrier materials used to fabricate ink feed channels and firing chamber walls. Another variation describes creation of a filter mesh from two layers of reduced height barrier materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.