Thermal transfer sheet
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United States of America Patent
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-
Jan 20, 2004
Grant Date -
Jun 20, 2002
app pub date -
Oct 24, 2001
filing date -
Oct 26, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
To provide a thermal transfer sheet which is not affected by the illumination light source even in comparison with the pigment coloring material or printed matter and upon transfer of the coloring material thin film, ensures excellent sharpness of halftone dots, good sensitivity, reduced film fogging and very stable transfer releasability. A thermal transfer sheet comprising a support having provided thereon at least a light-to-heat conversion layer containing a light-to-heat conversion substance, and an image forming layer in this order, wherein the absolute value of the difference in the solubility parameter (SP values) obtained by the Okitsu' method between the binder in the image forming layer and the binder contained in the underlying layer thereof is 1.5 or more.
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