Patent ID: 8968832
Filing Date: 2015-03-03
Classification: B41J

Abstract:
1. A process for manufacturing an ink-jet print head for an ink-jet printer comprising a photopolymer barrier defining ink passage ways and ejection chambers formed on a substrate, said process comprising the steps of: providing a substrate, applying, on said surface of said substrate, an adhesive first layer of a photopolymer barrier, said first layer being made of a partially polymerized cationically polymerizable material, applying a second layer above said first layer, said second layer being made of photopolymerizable material, providing ink passage ways and ejection chambers, and contacting said ink-jet print head with a water-based ink containing acidic species with a pH value between 3 and 5 so as to further polymerize said partially polymerized adhesive first layer of said photopolymer barrier, thus improving the photopolymer barrier adhesion on said surface of said substrate with time.