Patent ID: 9409397
Filing Date: 2016-08-09
CPC Classification: B41J,G03F,Y10T

Claim Text:
1. A process for producing a liquid ejection head comprising a substrate and an ejection orifice forming member having an ejection orifice for ejecting liquid, comprising the steps of: 1) forming, on the substrate, a photocationically polymerizable resin layer which includes a photocationically polymerizable resin material and becomes the ejection orifice forming member; 2) laminating, on the uncured photocationically polymerizable resin layer, a layer containing a condensation product obtained by condensation of a hydrolyzable silane compound having a cationically polymerizable epoxy group and a hydrolyzable silane compound having a fluorine-containing group; 3) laminating a water-repellent layer comprising a hydrolyzable silane compound having a perfluoropolyether group on the condensation-product-containing layer; 4) subjecting the photocationically polymerizable resin layer, the condensation-product-containing layer, and the water-repellent layer to pattern exposure; 5) collectively curing exposed portions of the photocationically polymerizable resin layer, the condensation-product-containing layer, and the water-repellent layer; and 6) removing non-exposed portions of the photocationically polymerizable resin layer, the condensation-product-containing layer, and the water-repellent layer to form the ejection orifice.