Ink jet recording head and manufacturing method therefor
US8267503B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2007 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Jul 3, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49401
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A manufacturing method forms an ink jet recording head including an energy generating element for generating energy for ejecting ink, wiring and electrode pad for supplying electric power to the energy generating element, and a flow path formation member in which an ink flow path is formed in fluid communication with an ink ejection outlet. The method includes steps of preparing a substrate on which the energy generating element, the wiring and the electrode pad have been formed; forming a protection layer covering edges of and around the generating element and the electrode pad; forming, with patterning, an adhesion layer for adhering the flow path formation member to a surface of the substrate through the protection layer, on a portion of the protection layer where the flow path formation member is formed and a portion surrounding the electrode pad; and forming through an electroless plating, a nickel layer covering the electrode pad and a gold layer covering the nickel layer to provide a bump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.