Patent ID: 7498291

Claim:
A sublimation thermal transfer image receiving medium comprising: a void containing film laminate as a substrate composed of at least one void containing film; and an image receiving layer laid on at least one exposed surface of the void containing film of the substrate; wherein the void containing film of the laminate film is composed of a core layer film (a) consisting of the following resin composition (A) and containing voids; a rear layer film (b) consisting of the following resin composition (B) and essentially containing no voids being laminated on one side of the core layer film (a); and a front layer film (c) consisting of the following resin composition (C) and being laminated on the other side of the core layer film (a) to build the image receiving layer thereon; wherein the front layer film (c) surface has a gloss at 60° of 50-100% and a gloss ratio between 75° and 45° ranging from 1.0 to 1.9, resin composition (A) comprising a dicyclopentadiene petroleum resin with a softening point (ring ball method) of 160-200° C. in a range of 5-55 wt % and an inorganic filler powder in a range of 5-55 wt %, and a total content of the dicyclopentadiene petroleum resin and the inorganic filler powder in a range of 15-60 wt % is compounded with a crystalline polypropylene relative to the weight of resin composition; resin composition (B) comprising a crystalline polypropylene; and resin composition (C) comprising titanium dioxide, with a mean particle diameter of 0.1-0.5 μm, in a range of 5-25 wt % is compounded with a crystalline polypropylene relative to the weight of resin composition.