Circuit routing for printhead having increased corrosion resistance
US7798611B2 · kind B2 · utility
1Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2006 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Aug 16, 2027 |
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 an ink jet 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 separation barrier between conductive portions of the resistors and the power bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.