Method of manufacturing nozzle plate

Details Method of manufacturing nozzle plate Method of manufacturing nozzle plate

Filed on

2011-03-08

Date issued

2011-03-08

Examiner

Fletcher, III, William P (Department: 1715)

Patent Class

Coating processes

SubClass

Interior of hollow article coating

Type

Reexamination Certificate

Status

active

Patent number

07901734

Description

ABSTRACT:
The method manufactures a nozzle plate having nozzle orifices for ejecting liquid droplets. The method comprises: a hole forming step of forming holes in a nozzle forming substrate, each of the holes passing through the nozzle forming substrate and having openings on a surface of a liquid droplet ejection side and a surface of a side opposite thereto of the nozzle forming substrate, the holes having a larger diameter than the nozzle orifices; a liquid-philic film forming step of forming a liquid-philic film on inner walls of the holes, the liquid-philic film blocking at least a portion of each of the holes; a liquid-repelling film forming step of forming a liquid-repelling film on the surface of the liquid droplet ejection side of the nozzle forming substrate, after performing the liquid-philic film forming step; and a nozzle orifice forming step of forming the nozzle orifices in the holes that are filled with the liquid-repelling film, after performing the liquid-repelling film forming step.

REFERENCES:
patent: 5759421 (1998-06-01), Takemoto et al.
patent: 6511156 (2003-01-01), Kazama et al.
patent: 7334872 (2008-02-01), Kobayashi et al.
patent: 9-76492 (1997-03-01), None
patent: 10-217482 (1998-08-01), None
patent: 2002-187267 (2002-07-01), None

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