An electrophotographic light-sensitive material comprising a support having provided thereon a photoconductive layer containing at least an inorganic photoconductive substance, a spectral sensitizer and a binder resin, wherein the binder resin contains (1) at least one resin (Resin (A)) having a weight average molecular weight of from 1 x 103 to 1x104 which contains at least 30% by weight of a polymerizable component represented by the general formula (I) as defined in Claim 1 and from 0.1 to 10% by weight of a polymerizable component containing at least one acidic group selected from -P03H2, -S03H, -COOH,
(wherein R represents a hydrocarbon group or -OR' (wherein R' represents a hydrocarbon group) and a cyclic acid anhydride-containing group, and which has at least one acidic group selected from the above-described acidic groups at one terminal of the main chain of the copolymer; and (2) at least one copolymer (Resin (B)) comprising at least a monofunctional macromonomer (MB) having a weight average molecular weight of not more than 2x104 and a monomer represented by the general formula (V) as defined in Claim 1, the macromonomer (MB) comprising at least a polymerizable component corresponding to a repeating unit represented by the general formula (lVa) or (IVb) as defined in Claim 1, and the macromonomer (MB) having a polymerizable double bond group represented by the general formula (III) as defined in Claim 1 bonded to only one terminal of the main chain thereof.
The electrophotographic light-sensitive material exhibits excellent electrostatic charging characteristics and pre-exposure fatigue resistance. It is suitable for producing a lithographic printing plate which provides prints having clear images of good quality.
一种电致发光感光材料,包括一支撑体,其上有一光电导层,该光电导层至少含有一种无机光电导物质、一种光谱敏化剂和一种粘结剂
树脂,其中粘结剂
树脂含有(1)至少一种
树脂(
树脂(A)),其重量平均分子量为1×103至1×104,该
树脂含有至少30%(重量)由权利要求1所定义的通式(I)代表的可聚合组分和0.1至10%(重量)的可聚合组分,该组分含有至少一个选自-P03H2、-S03H、-COOH的酸性基团、
(其中R代表烃基或-OR'(其中R'代表烃基)和含
环酸酐的基团,并且在共聚物主链的一个末端具有至少一个选自上述酸性基团的酸性基团;(2) 至少一种共聚物(
树脂 (B)),该共聚物包含至少一种单官能团大单体 (MB),其重量平均分子量不大于 2x104 和一种由如权利要求 1 所定义的通式 (V) 所代表的单体、大单体(MB)至少包括一种可聚合组分,该组分对应于由如权利要求1所定义的通式(lVa)或(IVb)所代表的重复单元,并且大单体(MB)具有由如权利要求1所定义的通式(III)所代表的可聚合双键基团,该双键基团仅键合在其主链的一个末端。
这种电子照相感光材料具有优异的静电充电特性和曝光前抗疲劳性。它适用于制作平版印刷板,可提供图像清晰、质量上乘的印刷品。