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    • 93. 发明授权
    • Liquid developer for electrostatic photography
    • 静电摄影用液体显影剂
    • US5356748A
    • 1994-10-18
    • US974215
    • 1992-11-10
    • Seiji HorieKenji SanoNobuo SuzukiShu Watarai
    • Seiji HorieKenji SanoNobuo SuzukiShu Watarai
    • C08F290/04G03G9/13G03G9/135
    • C08F290/04G03G9/133
    • A positively chargeable liquid developer for electrostaticphotography comprising a non-aqueous solvent having a volume specific resistance of at least 10.sup.9 .OMEGA.cm and resin grains dispersed therein, wherein the resin grains contain a dispersion stabilizing resin which is dissolved or dispersed in a colloidal form in the non-aqueous solvent and which mainly comprises a graft copolymer composed of (1) at least one macromonomer (M) having a weight average molecular weight of from 1.times.10.sup.3 to 1.times.10.sup.5 obtained by bonding a terminal carboxyl group bonded to the main chain of a polymer containing at least one specific polymer component to an epoxy compound having at least one polymerizable double bond group, using a quaternary ammonium salt as a reaction catalyst, and (2) at least one specific monomer, which gives the definite chargeability, easily controls the charge amount, is excellent in dispersion stability and endures long-term use and storage.
    • 一种用于静电照相的可带正电荷的液体显影剂,其包含体积电阻率为至少为10 10Ω·cm的非水溶剂和分散在其中的树脂颗粒,其中树脂颗粒含有以胶体形式溶解或分散于其中的分散体稳定树脂 非水性溶剂,其主要包含由(1)至少一种重均分子量为1×10 3〜1×10 5的大分子单体(M)组成的接枝共聚物,所述大分子单体(M)通过键合与含有 使用季铵盐作为反应催化剂的具有至少一个可聚合双键基团的环氧化合物的至少一种特定聚合物组分,和(2)具有确定带电性的至少一种特定单体容易控制电荷量 ,具有优异的分散稳定性和耐久长期使用和储存。
    • 97. 发明授权
    • 1,3-pentadiene derivatives and electrophotographic photoconductor using
the same
    • 使用它们的1,3-戊二烯衍生物和电子照相感光体
    • US5166438A
    • 1992-11-24
    • US751673
    • 1991-08-23
    • Mitsuru HashimotoMasaomi SasakiTomoyuki ShimadaNobuo SuzukiTakayuki SakaiSusumu Suzuka
    • Mitsuru HashimotoMasaomi SasakiTomoyuki ShimadaNobuo SuzukiTakayuki SakaiSusumu Suzuka
    • G03G5/06
    • G03G5/067G03G5/0668
    • A charge transporting material comprising a 1,3-pentadiene derivative having formula (I):A--CH.dbd.CH--CH.dbd.CH--CH.sub.2 --A (I)wherein A represents a 9-anthryl group which may have a substituent, a N-substituted carbazolyl group which may have a substituent, a N-substituted phenothiazinyl group which may have a substituent or ##STR1## in which Ar represents an arylene group which may have a substituent, R.sup.1 and R.sup.2 each represent an alkyl group which may have a substituent, an aralkyl group which may have a substituent, or an aryl group which may have a substituent; an electrophotographic photoconductor comprising an electroconductive support and a photoconductive layer formed thereon, which comprises as an effective component at least one of the 1,3-pentadiene derivatives of the above formula (I); and novel 1,3-pentadiene derivatives of the formula (I), provided that in the formula (I), R.sup.1 and R.sup.2 cannot be a methyl group at the same time, are disclosed.
    • 包含具有式(I)的1,3-戊二烯衍生物的电荷输送材料:A-CH = CH-CH = CH-CH 2 -A(I)其中A表示可以具有取代基的9-蒽基,N 可以具有取代基的取代的咔唑基,可以具有取代基的N-取代吩噻嗪基或其中Ar表示可以具有取代基的亚芳基的化合物,R 1和R 2各自表示可以具有取代基的烷基, 取代基,可具有取代基的芳烷基或可具有取代基的芳基; 包含形成在其上的导电载体和光电导层的电子照相感光体,其包含上述式(I)的1,3-戊二烯衍生物中的至少一种作为有效成分; 和式(I)的新的1,3-戊二烯衍生物,条件是在式(I)中,R1和R2不能同时为甲基。