Circuit routing for printhead having increased corrosion resistance
US7083265B2 · kind B2 · utility
1Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2001 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Oct 31, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention includes as one embodiment a printhead having a circuit with plural resistors and a power bus. The printhead includes a metal stack formed within the circuit, which is comprised of a first metal layer and a second metal layer and at least one power via. The power via is formed within the circuit as an interface between the first metal layer and the second metal layer and acts as a corrosion separation barrier between of the resistors and the power bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.