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    • 4. 发明授权
    • Thermally sensitive recording medium
    • 热敏记录介质
    • US06440897B1
    • 2002-08-27
    • US09418821
    • 1999-10-15
    • Yukiko RyuTakashi DateReiji Ohashi
    • Yukiko RyuTakashi DateReiji Ohashi
    • B41M530
    • B41M5/3375B41M5/42B41M5/423C08K5/357
    • The present invention is a thermally sensitive recording medium which has excellent anti ultra violet ray property, mainly composed of an electron donating compound and an electron accepting compound, containing at least one of benzoxadinone compound represented by general formula (1) as an ultra violet ray absorbing agent. In the above mentioned formula, R represents hydrogen atom, hydroxyl group, alkyl group of carbon number 1-8, alkoxy group of carbon number 1-6, acyl group of carbon number 1-6, acyloxy group of carbon number 1-6, alkoxy carbonyl group of carbon number 1-6, carboxyl group, halogen atom or nitro group and X represents a divalent group or a direct bond.
    • 本发明是一种热敏记录介质,其主要由供电子化合物和受电子化合物组成,具有优异的抗紫外线特性,其含有至少一种通式(1)表示的苯并恶嗪酮化合物作为紫外线 在上述式中,R表示氢原子,羟基,碳数为1-8的烷基,碳数为1-6的烷氧基,碳数为1-6的酰基,碳数为1的酰氧基 -6,碳数为1-6的烷氧基羰基,羧基,卤素原子或硝基,X表示二价基团或直接键合。