Patent ID: 7108898

Claim:
A multicolor image forming system comprising: an image receiving sheet comprising an image receiving layer; and at least five heat transfer sheets different in color each comprising a substrate, a light-heat conversion layer and an image forming layer, each of the heat transfer sheets being adapted to be superposed on the image receiving sheet with the image forming layer facing the image receiving layer and irradiated with laser light to transfer the irradiated area of the image forming layer to the image receiving layer to record an image on the image receiving sheet, wherein an area of the recording has a size of 515 mm by 728 mm or larger, the image forming layer of at least one of the heat transfer sheets has a thickness of 0.6 μm or greater, and the at least one of the heat transfer sheets has an adhesive strength of 8 g/cm or higher between the light-heat conversion layer and the image forming layer in a non-irradiated area thereof.