Liquid discharge head having protective film for heating...

Details Liquid discharge head having protective film for heating... Liquid discharge head having protective film for heating...

2007-10-30

2007-10-30

Stephens, Juanita D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S064000

Reexamination Certificate

active

11082397

ABSTRACT:
A liquid discharge head substrate has improved protection performance of protective films for protecting heaters while effective bubble-forming regions are being secured. The protective films for protecting a plurality of heating elements provided on a substrate are formed using a platinum group element and are separately provided for the respective heating elements.

REFERENCES:
patent: 4567493 (1986-01-01), Ikeda
patent: 5163177 (1992-11-01), Komura
patent: 5946013 (1999-08-01), Kurihara et al.
patent: 40-5254122 (1993-10-01), None

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