Patent ID: 6511736
Filing Date: 2003-01-28
Classification: B41M,Y10T

Abstract:
An ink jet recording material comprising a substrate material, at least one undercoat layer formed on a surface of the substrate material, and a multi-layered ink fixing layer composed of one or more intermediate ink fixing layers formed on a surface of the undercoat layer and a outermost ink fixing layer superposed on the intermediate ink fixing layers, each of the outermost and intermediate ink fixing layers comprising a pigment comprising at least one member selected from the group consisting of a silica, alumina silicate, alumina and zeolite, and a binder, wherein,(1) the undercoat layer comprises a pigment in the form of secondary particles having a secondary particle size of 1 to 20 &mgr;m, a binder and a complex of a polymer of at least one monomer having at least one ethylenically unsaturated bond with colloidal silica; (2) the pigment contained in each of the outermost and intermediate ink fixing layers is in the form of fine secondary particles having an average secondary particle side of 10 to 500 nm and each secondary particle is composed of a plurality of primary particles having an average primary particle size of 3 to 40 nm and agglomerated with each other to form a secondary particle; (3) the outermost ink fixing layer further contains a cationic compound, and the intermediate ink fixing layer does not contain a cationic compound; (4) the cationic compound for the outermost ink fixing layer is selected from cationic polymethane resins having a glass transition temperature of âˆ’20 to 150Â° C.; (5) the outermost ink fixing layer further contains a release agent; (6) the outermost ink fixing layer is one formed by a cast-coating procedure, and (7) the surface of the outermost ink fixing layer has a gloss at a specular angle of 75 degrees of 30% or more, determined in accordance with JIS P 8142.