| 摘要 |
PURPOSE:To ensure clear color forming even in use on an overhead projector, by a method wherein a hydrophilic film consisting of a mixture of a water-soluble polymer and a water-insoluble polymer is provided on a poorly hygroscopic base, in an ink jet recording sheet. CONSTITUTION:The hydrophilic film comprising a water-soluble polymer and a water-insoluble polymer in a ratio of 10/90-90/10 is provided in a thickness of 1-50mum on the base consisting of a transparent plastic film such as a polyester film. The water-soluble polymer may be a copolymer of polyacrylic acid, polymethacrylic acid or the like, starch, a polyvinyl alcohol or the like, of which particularly preferred is a polyvinyl alcohol having a saponification value of 70-90%. The water-insoluble polymer is a polymer which is insoluble in water at normal temperature after forming a film, and may be, e.g., a water-dispersible type polyester copolymer or a water-dispersible type acrylic copolymer. |
