REVERSIBLE HEAT-SENSITIVE RECORDING MEDIUM
PROBLEM TO BE SOLVED: To provide a reversible heat-sensitive recording medium excellent in film strength giving a good color optical density in erasing-printing after storage for a long period under a high-temperature and high-humidity environment.SOLUTION: A reversible heat-sensitive recording medi...
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| creator | AWA RYOTA NAGAMURA HIDEKI |
| description | PROBLEM TO BE SOLVED: To provide a reversible heat-sensitive recording medium excellent in film strength giving a good color optical density in erasing-printing after storage for a long period under a high-temperature and high-humidity environment.SOLUTION: A reversible heat-sensitive recording medium includes, on a substrate, a reversible heat-sensitive recording layer containing an ordinarily colorless or pale-colored dye precursor, and a reversible developer which forms relatively a colored state and an erased state by a difference in heating temperatures and/or cooling rates after heating. The reversible heat sensitive recording layer contains at least polyvinyl butyral and an isocyanate compound as binder species. A weight average molecular weight of the polyvinyl butyral is not less than 50,000, and a total unit ratio of hydroxyl groups and acetic acid groups to butyral groups of the polyvinyl butyral is 30-70 mass%. |
| format | Patent |
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The reversible heat sensitive recording layer contains at least polyvinyl butyral and an isocyanate compound as binder species. 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The reversible heat sensitive recording layer contains at least polyvinyl butyral and an isocyanate compound as binder species. 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The reversible heat sensitive recording layer contains at least polyvinyl butyral and an isocyanate compound as binder species. A weight average molecular weight of the polyvinyl butyral is not less than 50,000, and a total unit ratio of hydroxyl groups and acetic acid groups to butyral groups of the polyvinyl butyral is 30-70 mass%.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | COLOUR PRINTING LINING MACHINES PERFORMING OPERATIONS PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES STAMPS TRANSPORTING TYPEWRITERS |
| title | REVERSIBLE HEAT-SENSITIVE RECORDING MEDIUM |
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