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    • 22. 发明授权
    • Silver halide light-sensitive material containing base precursor and
polyvinyl alcohol
    • 含有卤化银感光材料的基体前体和聚乙烯醇
    • US5554482A
    • 1996-09-10
    • US428892
    • 1995-04-25
    • Hiroaki YokoyaAkihiro Endo
    • Hiroaki YokoyaAkihiro Endo
    • G03C1/498G03C8/40G03F7/028G03C8/08G03F7/06
    • G03C1/49863G03C8/408G03F7/0285Y10S430/156
    • A silver halide light-sensitive material is disclosed. The light-sensitive material comprises a support and two or more layers. Silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound or a cross-linkable polymer and a base precursor are independently contained in at least one of the layers. A layer containing the base precursor further contains a specific polyvinyl alcohol. The first embodiment of the specific polyvinyl alcohol (I) has such a chemical structure that a terminal alkyl group having 4 or more carbon atoms is attached to a polyvinyl alcohol. The second embodiment of the specific polyvinyl alcohol (II) is a block copolymer consisting of a vinyl alcohol unit and a hydrophobic unit, which is more hydrophobic than the vinyl alcohol unit. The third embodiment is a mixture of two polyvinyl alcohols (III) and (IV). The polyvinyl alcohol (III) has a saponification degree of not less than 95%. The polyvinyl alcohol (IV) has a saponification degree of less than 95% and a block character of not more than 0.5.
    • 公开了一种卤化银感光材料。 感光材料包括支撑体和两层或更多层。 卤化银,还原剂,烯属不饱和可聚合化合物或可交联聚合物和碱前体独立地包含在至少一层中。 含有碱性前体的层还含有特定的聚乙烯醇。 特定聚乙烯醇(I)的第一实施方案具有使具有4个以上碳原子的末端烷基连接到聚乙烯醇上的化学结构。 特定聚乙烯醇(II)的第二实施方案是由乙烯醇单元和疏水单元组成的嵌段共聚物,其比乙烯醇单元更疏水。 第三实施方案是两种聚乙烯醇(III)和(IV)的混合物。 聚乙烯醇(III)的皂化度不低于95%。 聚乙烯醇(IV)的皂化度小于95%,块特性不大于0.5。
    • 23. 发明授权
    • Electrophotographic printing plate precursor
    • 电子照相印版前体
    • US5426012A
    • 1995-06-20
    • US466905
    • 1990-01-18
    • Hiroaki YokoyaHiromichi TachikawaSyu Watarai
    • Hiroaki YokoyaHiromichi TachikawaSyu Watarai
    • C09B47/04G03G5/05G03G5/06G03G5/09G03G13/26G03G13/28G03G15/09
    • G03G5/0521G03G5/0514G03G5/0517G03G5/0696G03G13/28
    • An electrophotographic printing plate precursor is disclosed, which comprises an electrically conductive support having thereon a photoconductive layer containing a photoconductive pigment and binder resin which is designated to undergo an electrophotographic process wherein a toner image is formed and the photoconductive layer in the non-image portion other than the toner image portion is then removed to form a printing plate, wherein said photoconductive pigment is a phthalocyanine pigment and said photoconductive layer further comprises at least one compound selected from the compounds represented by the formulae (I), (II) and (III): ##STR1## wherein Z represents a sulfur atom or an oxygen atom, R.sup.1 represents an alkyl group, an alkoxy group, a single ring or double condensed ring aryl group, a single ring or a double condensed ring aryloxy group, or a univalent group derived from a heterocyclic ring, and the two R.sup.1 groups in general formula (III) may be the same or different;R.sup.2 and R.sup.3 each represent a hydrogen atom, an alkyl group, a single ring or double condensed ring aryl group, or a univalent group derived from a heterocyclic ring, and R.sup.2 and R.sup.3 may be the same or different;R.sup.4 represents a methylene group, a polymethylene group, a branched alkanediyl group or an arylene group, and R.sup.1 and R.sup.2, or R.sup.2 and R.sup.3 may be bonded together.
    • 公开了一种电子照相印版前体,其包括导电载体,其上具有含有光电导颜料和粘合剂树脂的光电导层,其被指定经历电子照相方法,其中形成调色剂图像,并且非图像部分中的光电导层 然后除去调色剂图像部分以形成印版,其中所述光导颜料是酞菁颜料,并且所述光电导层还包含选自由式(I),(II)和(II)表示的化合物中的至少一种化合物, (III)其中Z表示硫原子或氧原子,R1表示烷基,烷氧基,单环或双稠环芳基 基团,单环或双稠环芳氧基或衍生自杂环的一价基团,通式(III)中的两个R 1基团可以是 相同或不同; R2和R3各自表示氢原子,烷基,单环或双稠环芳基或衍生自杂环的一价基团,R2和R3可以相同或不同; R4表示亚甲基,多亚甲基,支链烷二基或亚芳基,R 1和R 2,或R 2和R 3可以结合在一起。
    • 29. 发明授权
    • Electrophotographic photoreceptor containing phthalocyanine
    • US5035969A
    • 1991-07-30
    • US476909
    • 1990-02-08
    • Syunichi KondoHiroaki YokoyaSeiji Horie
    • Syunichi KondoHiroaki YokoyaSeiji Horie
    • G03G5/06
    • G03G5/0629G03G5/0618G03G5/062G03G5/0631G03G5/0637G03G5/0638G03G5/0661
    • A novel electrophotographic photoreceptor for copying machine or photoprinter is provided comprising on an electrically conductive support a photoconductive layer, characterized in that said photoconductive layer contains a phthalocyanine pigment and a compound represented by the general formula (I), (II), (III), (IV) or (VI): ##STR1## wherein Z represents a sulfur or oxygen atom; Ar represents a monovalent aromatic hydrocarbon group or monovalent heterocyclic group; R.sub.3 represents a hydrogen atom, alkyl group, aryl group or aralkyl group; Ar and R.sub.3 may together form a ring; and R.sub.1 and R.sub.2 may be the same or different and each represents an alkyl group, aryl group or aralkyl group, ##STR2## wherein Z represents a sulfur or oxygen atom; R.sub.4 represents an alkyl group, alkoxy group, monovalent or bicyclic condensed aryl group, monocyclic or bicyclic condensed aryloxy group or monovalent group derived from heterocyclic group; the two R.sub.4 's in the general formula (IV) being the same or different; R.sup.5 and R.sup.6 may be the same or different and each represents a hydrogen atom, alkyl group, monocyclic or bicyclic condensed aryl group or monovalent group derived from heterocyclic group; R.sup.7 represents a methylene group, polymethylene group, branched alkanediyl group or arylene group; and R.sup.4 and R.sup.5 or R.sup.5 and R.sup.6 may be connected to each other, ##STR3## wherein Z represents a sulfur or oxygen atom; R.sup.8, R.sup.9, R.sup.10, R.sup.11, R.sup.12 and R.sup.13 may be the same or different and each represents a hydrogen atom, an alkyl group, aryl group or monovalent group derived from heterocyclic group, R.sup.8 and R.sup.9 or R.sup.10 and R.sup.11 being optionally connected to each other; R.sup.8, R.sup.9, R.sup.10 and R.sup.11 in the general formula (V) being optionally connected to each other to form a crosslinked ring; and R.sup.14 represents a divalent arylene group, aralkylene group, polymethylene group or alkylene group.