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    • 3. 发明授权
    • Thermosensitive recording medium
    • 热敏记录介质
    • US5919729A
    • 1999-07-06
    • US767432
    • 1996-12-16
    • Yasutomo MoriTakeshi KajikawaMitsunobu MoritaMitsuru Naruse
    • Yasutomo MoriTakeshi KajikawaMitsunobu MoritaMitsuru Naruse
    • B41M5/40B41M5/42B41M5/44C08F265/08
    • B41M5/42C08F265/08B41M5/426B41M5/44
    • A thermosensitive recording medium having a support, a thermosensitive layer provided on the support and capable of forming a color image when heated imagewise, and a protecting layer provided on the thermosensitive layer and containing a pigment and a core-shell resin obtained by polymerizing a vinyl monomer in an emulsion containing acrylonitrile-containing polymer seeds such that a polymer of the vinyl monomer is copolymerized on each of the seeds to form a shell surrounding a core of the seed, wherein the core-shell resin meets with at least one of the following criteria (a) and (b):(a) the glass transition point Tg of the core is at least 15.degree. C.; and(b) the glass transition point Tg of the shell is at least 150.degree. C. The vinyl monomer contains acrylamide and/or methacrylamide.
    • 具有支持体的热敏记录介质,设置在支撑体上并且能够成像时能够形成彩色图像的热敏层,以及设置在热敏层上的保护层,并且含有通过聚合乙烯基聚合而获得的颜料和核 - 壳树脂 含有含丙烯腈的聚合物种子的乳液中的单体,使得乙烯基单体的聚合物在每个种子上共聚以形成围绕种子核心的壳,其中核 - 壳树脂满足以下至少一种: 标准(a)和(b):(a)芯的玻璃化转变点Tg至少为15℃。 和(b)壳的玻璃化转变点Tg至少为150℃。乙烯基单体含有丙烯酰胺和/或甲基丙烯酰胺。