Ink jet printhead and method for its manufacture
US6339881B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1997 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Nov 17, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49401
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of fabricating a printhead for use in an ink jet printing device which includes providing a substrate having at least one substantially planar surface. An array of heating elements are formed on the surface of the substrate and addressed with a current pulse from an electrode. Depositing an insulating layer over the surface. Next, the insulating layer is mechanically or chemically treated to expose the heating elements. An ink channel plate is formed and includes at least one ink reservoir and one ink channel. A key or keyway is formed on channel plate and a corresponding key or keyway is formed on the insulating layer. The said channel plate is then adhesively secured to the substrate using the key and keyway as an alignment aid to achieve proper positioning of the ink channels and the heating elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.