Ink-jet print head having improved adhesion with time, its process of manufacturing and its use in combination with a water-based ink containing acidic species

摘要

Ink-jet print head for an ink-jet printer including at least a substrate and a photopolymer barrier applied onto the substrate. The photopolymer barrier includes an adhesive first layer and a second layer made of a photopolymerizable material and applied above said first layer. The adhesive first layer is made of a canonically polymerizable material partially polymerized that, when contacted by a water-based ink containing acidic species, is able to further polymerize, thus improving the photopolymer barrier adhesion on the surface of the substrate with time.

主权项

1. An ink-jet print head for an ink-jet printer comprising:
at least a substrate and a photopolymer barrier applied onto said substrate, said photopolymer barrier comprising an adhesive first layer and a second layer made of a photopolymerizable material and applied above said first layer, wherein said photopolymer barrier defines ink passageways and ejection chambers formed on said substrate, and a water-based ink containing acidic species, wherein said adhesive first layer is made of a partially polymerized cationically polymerizable material that, when contacted by said water-based ink containing acidic species, further polymerizes, thus improving the photopolymer barrier adhesion on said surface of said substrate over time.