Patent ID: 6962893

Claim:
An image-forming system comprising: an image receiving sheet having at least an image-receiving layer; and at least four thermal transfer sheets each comprising a support having thereon at least a light-to-heat conversion layer and an image-forming layer, wherein the light-to-heat conversion layer of said thermal transfer sheet comprises a homopolymer and/or a copolymer of vinylpyrrolidone and the at least four thermal transfer sheets include a thermal transfer sheet comprising an image-forming layer containing a yellow pigment, a thermal transfer sheet comprising an image-forming layer containing a magenta pigment, a thermal transfer sheet comprising an image-forming layer containing a cyan pigment, and a thermal transfer sheet comprising an image-forming layer containing a black pigment; wherein said light-to-heat conversion layer comprises a main binder in addition to said homopolymer and/or copolymer of vinylpyrrolidone, wherein said main binder is a polyimide resin or a polyamide resin; and wherein said homopolymer and/or copolymer of vinylpyrrolidone comprises a vinylpyrrolidone copolymer, wherein the copolymer component of said vinylpyrrolidone copolymer is incompatible with the main binder of the light-to-heat conversion layer.