Claims
- 1. A transfer foil comprising a releasable base film, a resin layer, a reflecting layer, and a heat-sensitive adhesive layer which are stacked in the mentioned order, and having a surface relief pattern formed on the resin layer on the side thereof where the reflecting layer is provided, said transfer foil being partially heated by a thermal head from the said releasable base film so that said surface relief pattern enables transfer of a precise region, wherein:
- the peel strength (A) between said releasable base film and said resin layer is larger than the film breaking strength (B) of said resin layer, and the initial bond strength of said heat-sensitive adhesive layer is larger than said peel strength (A).
- 2. A transfer foil as claimed in claim 1, wherein said film breaking strength (B) is between 0.5 g/inch and 1.0 g/inch.
- 3. A transfer foil as claimed in claim 1, wherein said peel strength (A) is between 1.0 g/inch and 5.0 g/inch.
- 4. A transfer foil as claimed in claim 1, which has a thickness of 5 .mu.m to 15 .mu.m.
- 5. A transfer foil as claimed in claim 1, wherein the glass transition temperature (T.sub.g) of said resin layer is higher than the temperature (T.sub.h) applied to bond said heat-sensitive adhesive layer and is between 100.degree. C. and 150.degree. C.
- 6. A transfer foil as claimed in claim 1, wherein said film breaking strength (B) is much larger than the release force (D) during relief pattern formation.
- 7. A transfer foil as claimed in claim 1, wherein a release layer material has been incorporated in said releasable base film to impart release characteristics thereto.
- 8. A transfer foil as claimed in claim 1, which has a transparent reflecting layer.
- 9. A transfer foil as claimed in claim 1, which has a metallic reflecting layer.
- 10. A transfer foil as claimed in claim 1, wherein a slipping layer is provided on the surface of the releasable base film of said transfer foil that comes into contact with a thermal head.
- 11. A transfer foil as claimed in claim 10, wherein said slipping layer is formed of a layer containing inorganic powders as a solid slipping agent.
- 12. A transfer foil as claimed in claim 10, wherein said slipping layer is formed of a layer in which there is dissolved or dispersed an organic slipping agent that is converted into a liquid phase slipping agent upon being heated.
- 13. A transfer foil as claimed in claim 10, wherein said slipping layer is formed of an extreme surface relief pattern provided on the surface of said releasable base film that comes into contact with a thermal head.
- 14. A transfer foil as claimed in claim 13, wherein said relief pattern has a pitch lying in the range of 0.5 .mu.m to 2.0 .mu.m and a depth lying in the range of 0.1 .mu.m to 15 .mu.m.
- 15. A transfer foil as claimed in claim 13, wherein said relief pattern is a randomly matted pattern.
- 16. A transfer foil as claimed in claim 13, wherein said relief pattern is a parallel-line pattern parallel or vertical to the moving direction of a thermal head.
- 17. A transfer foil as claimed in claim 13, wherein said relief pattern is a relief hologram pattern.
Priority Claims (3)
Number |
Date |
Country |
Kind |
3-8384 |
Jan 1991 |
JPX |
|
3-12183 |
Feb 1991 |
JPX |
|
3-43932 |
Mar 1991 |
JPX |
|
Parent Case Info
This application is a continuation-in-part of application Ser. No. 08/352,423, filed Dec. 8, 1994, now abandoned which is a continuation of application Ser. No. 08/084,506 filed Jun. 29, 1993, now abandoned which is a continuation of application Ser. No. 07/826,063 filed Jan. 24, 1992, now U.S. Pat. No. 5,300,169.
US Referenced Citations (6)
Continuations (2)
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Number |
Date |
Country |
Parent |
84506 |
Jun 1993 |
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Parent |
826063 |
Jan 1992 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
352423 |
Dec 1994 |
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