Yupo Corporation

Nobuhiro Iwatani

Tatsuya Suzuki

Hisao Ochiai

Hideyuki Imai

A printing paper having a base layer, an intermediate layer, and a surface layer, the intermediate layer being arranged adjacent to the base layer and on the base layer, and the surface layer being arranged adjacent to the intermediate layer and on the intermediate layer, the base layer, the intermediate layer, and the surface layer each being a thermoplastic resin film having pores, an average pore size of the surface layer being from 0.2 to 5 &#x3bc;m, an average pore size of the intermediate layer being from 5 to 70 &#x3bc;m and being greater than the average pore size of the surface layer, and an average pore size of the base layer being from 70 to 200 &#x3bc;m and being greater than the average pore size of the intermediate layer.

Printing paper

A resin film comprising a multilayer structure of a print layer (A), a gloss-imparting layer (B) and a substrate layer (c) as laminated in that order, wherein the print layer (A) comprises from 90 to 100% of a propylene random copolymer or the like and from 0 to 10% of an inorganic fine powder or the like, the gloss-imparting layer (B) comprises from 70 to 100% of a thermoplastic resin and from 0 to 30% of an inorganic fine powder or the like, the substrate layer (C) comprises a thermoplastic resin, the resin film has a glossiness, as measured on the surface side of the print layer (A), of from 70 to 110%, the resin film has an oxygen atom concentration, as measured through X-ray photoelectron spectrometry on the surface side of the print layer (A), of from 5 to 20%. The printed matter of the resin film with a UV-curable ink has extremely good weather resistance.

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Ibaraki, Japan

Nobuhiro Iwatani