Patent ID: 7516549
Filing Date: 2009-04-14
Classification: B41J,Y10T

Abstract:
1. A nozzle plate producing method for producing a nozzle plate by bonding a small piece to a nozzle plate body, the small piece having a plurality of nozzle holes from which liquid droplets are to be ejected, a liquid droplet ejecting surface in which the nozzle holes are positioned for ejecting the liquid droplets and a liquid-repellant coat provided on the liquid droplet ejecting surface, and the liquid-repellant coat exhibiting a liquid repellency with respect to the liquid droplets, comprising: a liquid-repellant coat removal step for conducting a plasma treatment to the small piece from a same side as the liquid droplet ejecting surface of the small piece under an atmospheric pressure, while supplying a gaseous mask material for protection of the liquid-repellant coat through the nozzle holes from an opposite side of the liquid droplet ejecting surface of the small piece in such a manner that the gaseous mask material is leaked out over the liquid droplet ejecting surface around the nozzle holes, to thereby remove at least one portion of the liquid-repellant coat exposed outside the gaseous mask material; and a bonding step for bonding the small piece to the nozzle plate body at an area from which the at least one portion of liquid-repellant coat is removed by the liquid-repellant coat removal step.