Claims
- 1. A thermal transfer sheet, comprising:
- a substrate sheet, one side surface of which is provided with a heat-fusible ink layer, and
- a thermal color-developing paper which is peelably bonded to the heat-fusible ink layer by the medium of an adhesive layer comprising adhesive particles.
- 2. A thermal transfer sheet according to claim 1, wherein the adhesive layer comprises adhesive particles having a low glass transition temperature, resin particles having a high glass transition temperature, and wax particles.
- 3. A thermal transfer sheet according to claim 2, wherein the weight ratio among the adhesive particles, the resin particles and the wax particles constituting the adhesive layer is (1 to 3):(0 to 2):(1 to 3).
- 4. A thermal transfer sheet according to claim 1, wherein the adhesive particles have a glass transition temperature of -90.degree. C. to -60.degree. C., and the resin particles have a glass transition temperature of 60.degree. C. or higher.
- 5. A thermal transfer sheet according to claim 1, wherein the adhesive layer has a thickness in the range of 0.2 to 20 .mu.m.
- 6. A thermal transfer sheet according to claim 1, wherein the adhesive layer is formed from a dispersion comprising the adhesive particles, the resin particles and the wax particles.
- 7. A thermal transfer sheet according to claim 1, wherein the heat-fusible ink layer has a transfer temperature which is higher than the color-developing temperature of the thermal color-developing paper.
- 8. A thermal transfer sheet according to claim 1, wherein the heat-fusible ink layer has a transfer temperature which is lower than the color-developing temperature of the thermal color-developing paper.
- 9. A thermal transfer sheet according to claim 1, wherein the thermal color-developing paper has a surface which is to be subjected to a printing operation and has been provided with a printed image in advance.
- 10. A thermal transfer sheet according to claim 1, wherein the thermal color-developing paper has been subjected to an antistatic treatment.
Priority Claims (4)
Number |
Date |
Country |
Kind |
2-325468 |
Nov 1990 |
JPX |
|
3-39038 |
Feb 1991 |
JPX |
|
3-50111 |
Feb 1991 |
JPX |
|
3-53698 |
Feb 1991 |
JPX |
|
Parent Case Info
This application is a division of U.S. Ser. No. 08/686,221 filed Jul. 23, 1996 now U.S. Pat. No. 5,948,511; which is a division of U.S. Ser. No. 08/413,268 filed Mar. 30, 1995 now U.S. Pat. No. 5,573,833; which is a division of U.S. Ser. No. 07/799,391 filed Nov. 27, 1991 now U.S. Pat. No. 5,427,840; which U.S. applications are all hereby incorporated herein by reference.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4837199 |
Morishita et al. |
Jun 1989 |
|
5264279 |
Imamura et al. |
Nov 1993 |
|
Divisions (3)
|
Number |
Date |
Country |
Parent |
686221 |
Jul 1996 |
|
Parent |
413268 |
Mar 1995 |
|
Parent |
799391 |
Nov 1991 |
|