| 摘要 |
PROBLEM TO BE SOLVED: To provide a ribbon for thermal transfer having an excellent processability without generating wrinkles during processing and an excellent printability without generating shavings in a rubbing system of a printer. SOLUTION: A ribbon for thermal transfer has a thermal transfer ink layer on one face of a biaxially oriented polyester film having a thickness of 1-10 μm. A thermal shrinking rate longwise of the film is 1.5-2.5% and the thermal shrinking rate in width is 0.0-1.0% when the film is heat-treated at 150 deg.C for 30 minutes the thermal shrinking rate longwise is 5.5-7.0% and the thermal shrinking rate in width is 2.0-4.0% when the film is heat-treated at 200 deg.C for 10 minutes. The number of projections Yn (piece/mm2) of which the projecting height X (nm) on the surface of the film is 600-50 N (wherein N is 0, 1, 2 or 3), satisfies formula 1. |
