| 摘要 |
1477799 Transfer sheets CARIBONUM Ltd 5 March 1976 [26 March 1975] 12609/75 Heading D2B A transfer sheet comprises a base sheet provided with a layer of porous material containing an ink within its pores, said porous material comprising a mixture of at least one cellulose ester and one or more acrylic resins in a ratio of 6:1 to 1:6 by weight. The base sheet may be paper or a plastics film, e.g. a polyester or polypropylene film. The cellulose ester may be cellulose acetate butyrate, or cellulose acetate propionate. The acrylic resin may be a poly(methyl methacrylate), poly- (ethyl methacrylate), poly(n-butyl methacrylate) or a copolymer of methyl and n-butyl methacrylates. The base sheet may be coated with a layer comprising polyurethane before application of the transfer layer. The ink may contain a colourless colour former or pigment(s). |
