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    • 45. 发明授权
    • Imaging member containing a copolymer of styrene and ethyl acrylate
    • 含有苯乙烯和丙烯酸乙酯共聚物的成像构件
    • US4853307A
    • 1989-08-01
    • US140441
    • 1988-01-04
    • Man C. TamSteven BloembergenGregory J. KovacsCarol A. JenningsRafik O. LoutfySandra J. GardnerMichael G. Taylor
    • Man C. TamSteven BloembergenGregory J. KovacsCarol A. JenningsRafik O. LoutfySandra J. GardnerMichael G. Taylor
    • G03G5/02G03G13/22G03G17/08
    • G03G13/22G03G17/08
    • An imaging system including a migration imaging member comprising a substrate and an electrically insulating softening layer adjacent the substrate, the softenable layer comprising a fracturable layer of electrically photosensitive migration marking material located substantially at or near the surface of the softenable layer spaced from the substrate, and a copolymer of styrene and ethyl acrylate in at least one layer adjacent the substrate, the copolymer comprising between about 40 and about 80 mole percent styrene, between about 20 and about 60 mole percent ethyl acrylate, the copolymer having a M.sub.n between about 4,000 and about 35,000, a M.sub.w between about 10,000 and about 80,000, a T.sub.g between about 30.degree. C. and about 75.degree. C., and a melt viscosity between about 1.times.10.sup.2 poise and about 1.times.10.sup.6 poise at 115.degree. C.The migration imaging member may be imaged by charging, imagewise exposing to activating radiation and developing with heat, solvent vapor, or solvent vapor pretreatment followed by heat. Some embodiments of the imaged member, wherein the softenable layer contains a charge transport material, may be utilized as a master in a zeroprinting process. The copolymer of styrene and ethyl acrylate may be in an adhesive layer of charge transport spacing layer between the substrate and the sofenable layer, or in the softenable layer itself. If desired, the copolymer in any of the aforesaid layers may be a terpolymer of styrene, ethyl acrylate and a copolymerizable organic acid having carbon-to-carbon unsaturation or a copolymerizable derivative of the organic acid.
    • 一种成像系统,其包括迁移成像构件,所述迁移成像构件包括基底和邻近所述基底的电绝缘软化层,所述可软化层包括位于所述可软化层的与所述基底隔开的表面的表面附近或附近的电光敏迁移标记材料的可破裂层, 和苯乙烯和丙烯酸乙酯在邻近基材的至少一层中的共聚物,所述共聚物包含约40至约80摩尔%的苯乙烯,约20至约60摩尔%的丙烯酸乙酯,所述共聚物的Mn在约4,000和 约35,000,约10,000至约80,000的Mw,约30℃至约75℃之间的Tg,以及在115℃下约1×102泊至约1×10 6泊的熔体粘度。迁移成像构件可以是 通过充电成像,成像暴露于活化辐射并用热,溶剂蒸气或溶剂蒸气预处理进行显影 加热。 成像构件的一些实施方案,其中可软化层含有电荷传输材料,可以在压印过程中用作母体。 苯乙烯和丙烯酸乙酯的共聚物可以在基材和可渗透层之间或在可软化层本身中的电荷输送间隔层的粘合剂层中。 如果需要,任何上述层中的共聚物可以是苯乙烯,丙烯酸乙酯和具有碳 - 碳不饱和键的可共聚有机酸或有机酸的可共聚衍生物的三元共聚物。