Ink jet recording paper
AssigneeJujo Paper Co., Ltd.
InventorsYutaka Kojima, Takashi Omori
Life of this patent
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Abstract
This invention concerns an ink jet recording paper characterized by comprising a base layer that contains an internal size, and an ink-receptive layer that is made out of a material having good affinity for inks, wherein the ink-receptive layer is superposed on either one or both sides of the base layer by multi-ply paper-manufacturing process; the structure of the ink jet recording paper is such that it has good ink-absorbency enough to catch up with rapid multi-color printing, and provides high optical image, vivid and uniform image definition, and almost no print through, having desirable paper-like figures and hand feeling.
Claims15
An ink jet recording paper comprising
- a paper layer that contains an internal sizing agent, and
- an ink-receptive layer comprising a material having good affinity for inks and consisting of pulp other than synthetic pulp, filler, and at least one substance selected from the group consisting of
- starch, polyvinylalcohol, gelatin, sodium alginate, hydroxyethylcellulose, carboxymethylcellulose, polyacrylamide, polystyrene sulfonate, polyacrylate, polydimethyldiallylammonium chloride, polyvinylbenzyltrimethylammonium chloride, polyvinylpyridine, polyvinylpyrrolidone, polyethyleneoxide, hydrolysis product of starch-acrylonitrile graftpolymer, polyethyleneimine, polyalkylene-polyaminedicyandiamideammonium condensate, polyvinylpyridinium halide, poly-(meth)acrylalkyl quaternary salts, poly-(meth)acrylamidealkyl quaternary salts, vegetable gum, colloidal animal glue, aluminum sulfate, styrene-acrylic resin, polyethylene-imine quaternary salt, epichlorohydrin resin, polyamide epichlorohydrin resin, formalin resin carboxylated polyacrylamide, partially aminated polyacrylamide, acid addition compound of partially aminomethylated polyacrylamide and acid addition compound of partially methylolated polyacrylamide,
- wherein said paper layer has an opacity of 75% or over and a Stockigt sizing degree of 3 seconds or over, and,
- wherein said ink-receptive layer is superposed on either one or both sides of said paper layer by a multi-ply paper-manufacturing process.
Dependencies are inferred from the claim text.