Liquid jet recording head having a layer of a resin composition curable with an active energy ray

Claim 1

A liquid jet recording head, having a liquid passage communicated to the discharging outlet of the liquid provided on a substrate surface, said passage being formed by subjecting a layer of a resin composition curable with an active energy ray to a predetermined pattern exposure with the use of said active energy ray to form a cured region of said resin composition and removing the uncured region from said layer , said resin composition comprising (i) a heat-crosslinkable linear copolymer containing 5 to 30 mol % of a monomer represented by the formula I shown below and 5 to 50 mol % of a monomer represented by the formula II shown below, as the copolymer constituents: ##STR7## (wherein R 1 represents hydrogen or alkyl or hydroxyalkyl group having 1 to 3 carbon atoms; R 2 hydrogen or alkyl or acyl group having 1 to 4 carbon atoms which may have a hydroxy group; R 3 hydrogen or alkyl group having 1 to 3 carbon atoms; R 4 divalent hydrocarbon group which may have internally an ether bond and may also be substituted with halogen atoms; and R 5 alkyl having 3 to 12 carbon atoms or phenylalkyl group or phenyl group), and (ii) a monomer having an ethylenically unsaturated bond.