Method of manufacturing flow channel substrate for liquid...

Details Method of manufacturing flow channel substrate for liquid... Method of manufacturing flow channel substrate for liquid...

2008-09-18

2010-10-19

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Fluid pattern dispersing device making, e.g., ink jet

C347S047000

Reexamination Certificate

active

07814657

ABSTRACT:
A method of manufacturing a flow channel substrate for a liquid ejection head, includes at least the steps of: forming, on a substrate, a sacrificial layer which is made of a dissolvable resin and has a liquid flow channel shape; forming a lyophobic film on the substrate and the sacrificial layer; applying, by heat treatment, a rounded shape to a corner section of the sacrificial layer on a side which is not in contact with the substrate; removing the lyophobic film after the heat treatment; forming a coating resin layer on the substrate and the sacrificial layer after the lyophobic film is removed; patterning the coating resin layer; and dissolving the sacrificial layer.

REFERENCES:
patent: 5980017 (1999-11-01), Sato
patent: 6045214 (2000-04-01), Murthy et al.
patent: 6682874 (2004-01-01), Ramaswami et al.
patent: 6837572 (2005-01-01), Ramaswami et al.
patent: 9-193405 (1997-07-01), None

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