Method for producing ink-jet recording head having filter,...

Details Method for producing ink-jet recording head having filter,... Method for producing ink-jet recording head having filter,...

2008-05-27

2008-05-27

Stephens, Juanita D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S063000, C029S611000

Reexamination Certificate

active

11157761

ABSTRACT:
In a method for producing an ink-jet recording head, a plurality of through-holes is formed in a heat storage layer formed on one surface of a silicon substrate, subsequently, heating elements are formed, and a protective layer is formed on the substrate. A passage-forming member forming discharge ports and ink passages is formed on the protective layer and an ink supply port is then formed by anisotropic etching from the other surface of the silicon substrate. In this step, since the protective layer serves as an etching stop layer, the passage-forming member is not in contact with an etchant. Subsequently, the protective layer formed in the through-holes is removed so that the ink supply port includes a filter.

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patent: 2000-94700 (2000-04-01), None
patent: 2003-136492 (2003-05-01), None

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