Multi-gradation recording method and thermal transfer recording medium used in the method
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United States of America Patent
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Oct 14, 2003
Grant Date -
Dec 27, 2001
app pub date -
Apr 12, 2001
filing date -
Apr 13, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multi-gradation recording method comprising the steps of: providing a thermal transfer recording medium comprising a substrate, a release layer, a first ink layer and a second ink layer provided in this order on the substrate, and carrying out a gradation recording using the thermal transfer recording medium, the step of carrying out a gradation recording comprising: (a) in the case of recording in a middle density/high density region, carrying out a gradation expression based on an area gradation expression by transferring the first ink layer and the second ink layer together, and (b) in the case of recording in a low density region, carrying out a gradation expression by transferring only the second ink layer by causing a cohesive failure in the second ink layer, thereby changing the area of transferred ink per one dot and the thickness of transferred ink dots.
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