Micro-fluid ejection heads with multiple glass layers

Details Micro-fluid ejection heads with multiple glass layers Micro-fluid ejection heads with multiple glass layers

2010-04-23

2011-12-06

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S056000, C347S064000

Reexamination Certificate

active

08070264

ABSTRACT:
Methods for fabricating micro-fluid ejection heads and micro-fluid ejection heads are provided herein, such as those that use non-conventional substrates. One such micro-fluid ejection head includes a substrate having first and second glass layers disposed adjacent to a surface thereof and a plurality of fluid ejection actuators disposed adjacent to the second glass layer. The first glass layer is thicker than the second glass layer and the second glass layer has a surface roughness of no greater than about 75 Å Ra.

REFERENCES:
patent: 6086187 (2000-07-01), Hattori et al.
patent: 6637866 (2003-10-01), Cornell et al.

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