POROUS RESIN FILM

摘要

A porous resin film which satisfactorily absorbs water, used as a solvent in water-based inks or water-based adhesives; and a recording medium comprising the porous resin film. The recording medium is characterized in that when an ink is delivered thereto in a large amount in ink-jet recording, it is capable of absorbing the ink without causing unevenness of density even in solid printing. The porous resin film comprises 30 to 90 wt.% thermoplastic resin and 70 to 10 wt.% fine inorganic and/or organic particles the surface of which has been treated with (A) a surface-treating agent comprising a copolymer of (a1) a diallylamine salt or alkyldiallylamine salt with (a2) a nonionic hydrophilic vinyl monomer and (B) an anionic surface-treating agent. It has a liquid absorption volume as measured in accordance with "Japan TAPPI No.51-87" of 0.5 ml/m<2> or greater.