IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0238878
(2002-09-11)
|
우선권정보 |
JP-0277135 (2001-09-12); JP-0294378 (2001-09-26) |
발명자
/ 주소 |
- Tamura, Yoshihiko
- Aso, Kenichi
|
출원인 / 주소 |
- Dai Nippon Printing Co., Ltd.
|
대리인 / 주소 |
Parkhurst & Wendel, L.L.P.
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
1 |
초록
▼
There are provided a thermal transfer film which can yield a thermally transferred print possessing excellent fastness or resistance properties such as excellent abrasion resistance, lightfastness, and alteration preventive property, is less likely to cause damage to an object, is free from a deteri
There are provided a thermal transfer film which can yield a thermally transferred print possessing excellent fastness or resistance properties such as excellent abrasion resistance, lightfastness, and alteration preventive property, is less likely to cause damage to an object, is free from a deterioration in quality of the print, and does not incur an increase in production cost, a method for image formation using the thermal transfer film, and an image formed object. The thermal transfer film according to the present invention comprises a substrate and one or a plurality of layers including a thermal transfer layer provided on one side of the substrate, the thermal transfer layer being located on the uppermost surface of the thermal transfer film, a convex being provided on a part of the thermal transfer layer.
대표청구항
▼
1. A thermal transfer film comprising:a substrate; andat least one layer including a thermal transfer layer provided on one aide of the substrate, the thermal transfer layer being located on the uppermost surface of the thermal transfer film, wherein a convex is provided on a part of the thermal tra
1. A thermal transfer film comprising:a substrate; andat least one layer including a thermal transfer layer provided on one aide of the substrate, the thermal transfer layer being located on the uppermost surface of the thermal transfer film, wherein a convex is provided on a part of the thermal transfer layer. 2. The thermal transfer film according to claim 1, wherein the thermal transfer layer comprises as a main component a thermoplastic resin having a glass transition temperature of 50 to 120° C. 3. The thermal transfer film according to claim 2, wherein the thermoplastic resin is selected from a polyester resin having a number average molecular weight of 2000 to 30000, a vinyl chloride-vinyl acetate copolymer having an average degree of polymerization of 150 to 500, and a homopolymer or copolymer, of a methacrylate base monomer, having a weight average molecular weight of 20000 to 60000. 4. The thermal transfer film according to claim 1, wherein a release layer is provided between the substrate, and the thermal transfer layer so as not to be separable from the substrate side. 5. The thermal transfer film according to claim 4, wherein a peel layer is provided between the substrate and the thermal transfer layer so as to be separable from the substrate side. 6. The thermal transfer film according to claim 5, wherein the peel layer is provided between the release layer and the thermal transfer layer. 7. The thermal transfer film according to claim 1, wherein the convex has a height of 0.2 to 5.0 μm. 8. The thermal transfer film according to claim 1, wherein the thermal transfer layer is transparent. 9. A process for producing a thermal transfer film comprising a substrate; and at least one layer including a thermal transfer layer provided on one side of the substrate, the thermal transfer layer being located on the uppermost surface of the thermal transfer film, wherein a convex is provided on a part of the thermal transfer layer, said process comprising the steps of:providing two thermal transfer films each comprising a substrate and at least one layer including a thermal transfer layer provided on the substrate, the thermal transfer layer being located on the uppermost surface of the thermal transfer film;putting the two thermal transfer films on top of each other so that the thermal transfer layer in one of the thermal transfer films faces the thermal transfer layer in the other thermal transfer film; andpartially heating the assembly of the thermal transfer films to transfer a part of the thermal transfer layer in one of the thermal transfer films onto the thermal transfer layer in the other thermal transfer film,whereby a convex is formed on a part of the thermal transfer layer in one of the thermal transfer films. 10. A method for image formation using a thermal transfer film comprising a substrate; and at least one layer including a thermal transfer layer provided on one side of the substrate, the thermal transfer layer being located on the uppermost surface of the thermal transfer film, wherein a convex is provided on a part of the thermal transfer layer, said method comprising the steps of:putting the thermal transfer film on top a thermal transfer recording medium comprising a substrate and, provided on at least one side of the substrate, a thermal transfer ink layer comprising a thermoplastic resin and a colorant so that the thermal transfer layer faces the thermal transfer ink layer;imagewise heating the stacked thermal transfer recording medium to imagewise transfer the thermal transfer ink layer or the colorant onto the thermal transfer layer in the thermal transfer film,whereby a reverse image is once formed on the thermal transfer film;then putting the thermal transfer film with the reverse image formed thereon on top of an object so that the thermal transfer layer in the thermal transfer film faces an image forming face in the object; andheating the stacked thermal transfer film from the surface thereof remote from the thermal transfer layer to transfer the thermal transfer layer with the reverse image formed thereon onto the object,whereby an image is formed on the object. 11. The method according to claim 10, wherein the thermal transfer layer is transparent or translucent. 12. The method according to claim 10, wherein the light transmission property of the convex formed in the thermal transfer layer is different from the light transmission property of the thermal transfer layer in its portion other than the convex. 13. An image formed object comprising an image formed by the method according to claim 10.
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