Patent ID: 7041349

Claim:
A thermal transfer image recording composite sheet comprising (1) a release sheet section comprising (A) a substrate sheet for the release sheet section (1) and (B) a release layer formed on a surface of the substrate sheet (A) and comprising a release agent: and (2) an image recording sheet section comprising (C) a substrate sheet for the image recording sheet section (2), (D) an image receiving layer formed on a surface of the substrate sheet (C) and comprising a dyeable resin, and (E) an adhesive layer formed on an surface of the substrate sheet (C) other than the surface on which the image receiving layer is formed, comprising an adhesive agent and separably adhered to the release layer (B) of the release sheet section (1), wherein: the substrate sheet (C) for the image recording sheet section (2) comprises (a) an upper oriented porous polyester film layer bonded to the image receiving layer (D) and (b) a lower oriented porous polymer film layer the polymer of which is different from the polyester for the upper oriented porous polyester film layer (a) and which is bonded, on a surface thereof, to the adhesive layer (E), and, on an other surface thereof, to the upper oriented porous polyester film layer (a), the oriented porous polyester film for the upper polyester film layer (a) is one produced by forming an undrawn film from a mixture comprising a matrix polyester resin and at least one member selected from a particulate resin and a filler each incompatible with the matrix polyester resin; and drawing the undrawn film in at least one direction, to cause the oriented polyester film to be porous, and has a compressive modulus of 10 to 80 Mpa, determined in accordance with Japanese Industrial Standard K 7220, and the recording sheet has, as a whole, a compressive modulus of 50 Mpa or less, determined in accordance with Japanese Industrial Standard K 7220.