Nozzle plate manufacturing method and nozzle plate
AssigneeBrother Kogyo Kabushiki Kaisha
InventorJin Uno
Life of this patent
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Abstract
A projecting portion is formed on a surface of a liquid droplet discharge side of a substrate in which a plurality of nozzle holes for discharging a liquid droplet will be processed. A liquid droplet formed of a polyimide resin is attached to the vicinity of a portion which will become an opening on the surface of the liquid droplet discharge side of the substrate. Then, the liquid droplet is hardened to form the projecting portion in the vicinity of the portion which will become the opening, and a liquid repellent film is formed on the surface of the liquid droplet discharge side. Thereafter, the nozzle holes are formed on the surface of the liquid droplet discharge side to make up a nozzle surface.
Claims18
A nozzle plate manufacturing method for manufacturing a nozzle plate in which a plurality of nozzle holes are formed, the method comprising:
- adhering a plurality of liquid droplets formed of polyimide resin to one surface of a substrate at portions in the vicinity of portions which are provided for formation of the nozzle holes;
- hardening the liquid droplets to form projecting portions;
- forming a liquid repellent film on the one surface of the substrate;
- and
- forming the nozzle holes through the substrate.
A nozzle plate having a plurality of nozzle holes, comprising:
- a resin substrate having a surface on which hydrophilic process is performed;
- a plurality of projecting portions formed of polyimide resin on the surface of the resin substrate;
- and
- a liquid repellent film which covers the surface, of the resin substrate, on which the projecting portions are formed;
- wherein the nozzle holes are formed in the vicinity of the projecting portions through the resin substrate and the liquid repellent film.
Dependencies are inferred from the claim text.