Thermal ink jet nozzle treatment
US5136310A · kind A · utility
44Cited by
16References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1990 |
| Grant date | Aug 4, 1992 |
| Priority date | — |
| Expiry date | Sep 28, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/1606
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink-repellant coating is provided on the nozzle face of a thermal ink jet printhead. The nozzle face has areas made from different materials. Alkyl polysiloxanes are used to treat the nozzle face in order to control wetting characteristics so as to improve jet directionality and to prevent accumulation of debris on the face. An intermediate layer of silica formed between the nozzle face and the ink-repellant layer is provided so that the ink-repellant layer is isotropically hydrophobic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.