Printhead apparatus
US6293654A · kind A · utility
17Cited by
24References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1998 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Apr 22, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14387
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet print head apparatus having a reduced thickness passivation layer. Passivation layer thickness is preferably below 7000 angstroms to permit operation at a lower turn-on-energy. The passivation layer is preferably formed in a discrete manner and may include a nitride layer and a SiC layer. Various other layer arrangements are also described including the provision of a cavitation layer over the passivation layer. A thermal or other type of ink expulsion mechanism may be utilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.