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    • 7. 发明授权
    • Switchable polymer printing plates with carbon bearing ionic and steric stabilizing groups
    • 具有碳离子和立体稳定基团的可切换聚合物印版
    • US07250245B2
    • 2007-07-31
    • US10852552
    • 2004-05-24
    • Paul R. WestJeffrey W. LeonNicki R. Miller
    • Paul R. WestJeffrey W. LeonNicki R. Miller
    • G03F7/004G03F7/30
    • B41C1/1041
    • The present invention provides an imageable member having an imageable layer including a heat-sensitive ionomer characterized by a net positive or negative charge, and a photothermal conversion material. The photothermal conversion material includes carbonaceous particles having thereon both an organic moiety including an ionic substituent having like charge as the ionomer, and a group represented by the formula —X-[NIon]p-Rterminal; wherein X represents an aromatic group or an alkyl group, NIon represents a non-ionic, non-ionizable group, Rterminal represents hydrogen, an aromatic group, an alkoxy group, or an alkyl group, and p is an integer from 1 to about 500. The heat-sensitive ionomer and modified carbonaceous particles can be formulated in water or water-miscible solvents without agglomeration. Imageable members utilizing the modified carbonaceous particles as a photothermal conversion material exhibit acceptable optical density and exposure speed, and imaged members made therefrom exhibit excellent background performance.
    • 本发明提供了一种可成像的构件,其具有包括以正正电荷或负电荷为特征的热敏离聚物的可成像层和光热转换材料。 光热转换材料包括其上具有包括具有类似电荷的离子取代基的有机部分作为离聚物的碳质粒子,以及由式<βin-line-formula description =“In-line Formulas”end =“lead “?” - X- [NIon] ; <?in-line-formula description =“In-line Formulas”end =“tail”?> 其中X表示芳族基团或烷基,NIon表示非离子型,不可离子化的基团,R 3表示氢,芳基,烷氧基或烷基,p表示 是1至约500的整数。热敏离聚物和改性碳质颗粒可以配制成水或水混溶性溶剂而不凝聚。 利用改性碳质颗粒作为光热转换材料的可成像构件表现出可接受的光密度和曝光速度,并由其制成的成像构件表现出优异的背景性能。