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    • 37. 发明授权
    • Thermal transfer donor and receptor for lithographic printing
applications
    • 用于平版印刷应用的热转移供体和受体
    • US5494774A
    • 1996-02-27
    • US419046
    • 1995-04-10
    • M. Zaki AliMahfuza B. AliDavid R. BostonJeffrey C. Chang
    • M. Zaki AliMahfuza B. AliDavid R. BostonJeffrey C. Chang
    • G03F7/004B41C1/055B41C1/10B41M5/382B41M5/392B41M5/50B41M5/52G03F7/00G03F7/34G03C8/08G03C1/93G03C8/26
    • G03F7/346B41C1/1091
    • A thermal transfer system for transferring material in an imagewise manner by means of thermal transfer printing from a donor element to an image receiving element is used to prepare printing plates. In one construction, a donor element, which is prepared by coating a photoinitiator (and optionally a sensitizer) in a binder on a backing material, is used with an image receiving element, which is prepared by coating a photopolymer (and optionally a sensitizer) on a substrate having a microporous hydrophilic crosslinked silicated surface. In an alternative construction, a donor element, which is prepared by coating a sensitizer in a binder on a backing material, is used with an image receiving element, which is prepared by coating a photopolymer and photoinitiator on a substrate having a microporous hydrophilic crosslinked silicated surface. In yet another construction, a donor element, prepared by coating a thermal transfer layer containing a photopolymer, a photoinitiator and/or a sensitizer on a backing material, is used with an image receiving element having a microporous hydrophilic crosslinked silicated surface.
    • 用于通过从供体元件到图像接收元件的热转移印刷以成像方式转移材料的热转印系统用于制备印刷版。 在一种结构中,通过将光引发剂(和任选的敏化剂)涂覆在背衬材料上的粘合剂中制备的供体元件与图像接收元件一起使用,其通过涂布光聚合物(和任选的敏化剂)制备, 在具有微孔亲水性交联硅表面的基材上。 在替代的结构中,通过将粘合剂中的敏化剂涂覆在背衬材料上制备的供体元件与图像接收元件一起使用,该图像接收元件通过将光聚合物和光引发剂涂布在具有微孔亲水性交联硅胶 表面。 在另一种结构中,通过在背衬材料上涂覆含有光聚合物,光引发剂和/或敏化剂的热转印层制备的供体元件与具有微孔亲水性交联硅表面的图像接收元件一起使用。