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    • 2. 发明授权
    • Dyed stabilized liquid developer and method for making
    • 染色稳定液体显影剂及其制造方法
    • US4476210A
    • 1984-10-09
    • US499054
    • 1983-05-27
    • Melvin D. CroucherJames M. DuffMichael L. HairKar P. LokRaymond W. Wong
    • Melvin D. CroucherJames M. DuffMichael L. HairKar P. LokRaymond W. Wong
    • G03G9/12G03G9/13
    • G03G9/122G03G9/131G03G9/133
    • A stable colored liquid developer and method for making such are described wherein an improved optical density resulting from a colored dye being imbibed into a thermoplastic resin core occurs. In particular, the liquid developer comprises a marking particle dispersed in an aliphatic dispersion medium, the marking particle comprises a thermoplastic resin core having an amphipathic block or graft copolymeric steric stabilizer irreversibly chemically or physically anchored to the thermoplastic resin core with the dye being imbibed in the resin core and being soluble therein and insoluble in the dispersion medium. The stable colored liquid developer is preferably made by first preparing a graft or block copolymer amphipathic steric stabilizer, anchoring said stabilizer to a thermoplastic resin core, and to the aliphatic disperion of said particle adding a solution of a dye dissolved in a polar solvent, preferrably methanol, the dye being soluble in the thermoplastic resin core to enable it to be imbibed therein and substantially insoluble in the dispersion medium.
    • 描述稳定的着色液体显影剂及其制备方法,其中出现由着色染料吸收到热塑性树脂芯中得到的改善的光密度。 特别地,液体显影剂包括分散在脂族分散介质中的标记颗粒,标记颗粒包括具有两亲性嵌段或接枝共聚空间稳定剂的热塑性树脂芯,其不可逆地化学或物理锚定到热塑性树脂芯上,染料被吸入 树脂芯并且可溶于其中并且不溶于分散介质中。 稳定着色的液体显影剂优选通过首先制备接枝或嵌段共聚物两亲空间稳定剂,将所述稳定剂锚定到热塑性树脂核心,以及添加溶解在极性溶剂中的染料溶液的所述颗粒的脂肪族分散体,优选地 甲醇,染料可溶于热塑性树脂核心,使其能够吸收在其中并且基本上不溶于分散介质中。