Thermally transferable protective sheet
AssigneeDai Nippon Printing Co., Ltd.
InventorYasuhiro Sato
Life of this patent
Estimating the term…
Abstract
To provide a thermally transferable protective sheet which, upon forming a protective layer on a image-receiving member, can provide the protective layer without causing rainbow unevenness. A thermally transferable protective sheet which has a protective layer that comprises a peeling layer and an adhesive layer on at least one portion of one face of a substrate sheet, and is thermally transferable, and the peeling layer and the adhesive layer are respectively constituted by resins that have different upper and lower values of refractive indexes, with a refractive index of 1.5 serving as its border.
Claims3
A thermally transferable protective sheet, comprising:
- a protective layer comprising a peeling layer and an adhesive layer,
- wherein the protective layer is formed on at least one portion of one face of a substrate sheet, and
- wherein the protective layer is thermally transferable, and
- wherein the peeling layer is constituted by a resin selected from the group consisting of polyacrylonitrile, polyethylene, Nylon 6, polyester and vinyl chloride-vinyl acetate copolymer, and
- wherein the peeling layer resin has a refractive index of 1.5 or more to less than 1.55, and
- wherein the adhesive layer is constituted by a resin selected from the group consisting of polytetrafluoroethylene, vinylidene fluoride, polyvinyl acetate, acrylic resin and (meth)acrylate resin, and
- wherein the adhesive layer resin has a refractive index of less than 1.5;
- and
- wherein the peeling layer is applied and formed with an amount of coat in the range from 1.0 to 3.0 g/m2 after dried and the adhesive layer is applied and formed with an amount of coat in the range from 0.5 to 2.0 g/m2 after dried.
A thermally transferable protective sheet, comprising:
- a protective layer comprising a peeling layer and an adhesive layer,
- wherein the protective layer is formed on at least one portion of one face of a substrate sheet, and
- wherein the protective layer is thermally transferable, and
- wherein the peeling layer is constituted by a resin selected from the group consisting of polyester, polyamide-imide, styrene-acrylonitrile copolymers and polystyrene, and
- wherein the peeling layer resin has a refractive index of 1.55 or more, and
- wherein the adhesive layer is constituted by a resin selected from the group consisting of polytetrafluoroethylene, vinylidene fluoride, polyvinyl acetate, acrylic resin and (meth)acrylate resin, and
- wherein the adhesive layer resin has a refractive index of less than 1.5;
- and
- wherein the peeling layer is applied and formed with an amount of coat in the range from 1.0 to 3.0 g/m2 after dried and the adhesive layer is applied and formed with an amount of coat in the range from 0.5 to 2.0 g/m2 after dried.
Dependencies are inferred from the claim text.