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1.发明授权
公开(公告)号：US4762760A
公开(公告)日：1988-08-09
申请号：US8357
申请日：1987-01-29
CPC分类号： G03G5/067 , G03G5/0631
摘要： An electrophotographic recording material is comprised of an electrically conducting film base, an optional, adhesion-promoting, insulating intermediate film and at least one binder-containing photoconductive film that also contains a charge-carrier generating compound and pyrazoline charge-transporting compound represented by the formula ##STR1## in which n denotes zero or 1 andR.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 respectively denote hydrogen or halogen, preferably chlorine or bromine.Such a recording material has a low pre-exposure sensitivity combined with very good photosensitivity, and a low residual charge level in cyclic behavior. The charge-transporting compound has a low tendency to crystallize out in the film.
摘要翻译： 电子照相记录材料由导电膜基材，任选的粘合促进绝缘中间膜和至少一种含粘合剂的光电导膜组成，其还含有电荷载体产生化合物和由 式（I）其中n表示0或1，R 1，R 2，R 3，R 4和R 5分别表示氢或卤素，优选氯或溴。 这种记录材料具有低的预曝光灵敏度以及良好的光敏性，以及循环行为中的低剩余电荷水平。 电荷输送化合物在膜中结晶的倾向低。
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2.发明授权
公开(公告)号：US4818653A
公开(公告)日：1989-04-04
申请号：US922332
申请日：1986-10-23
CPC分类号： G03G5/0605 , G03G5/0637 , G03G5/0698 , G03G5/07 , Y10S430/10
摘要： An electrophotographic recording material is described that comprises an electrically conducting base layer and a photoconductive system deposited thereon, which system comprises an optional insulating intermediate layer, a layer containing a charge-generating compound, and a layer containing a charge-transporting compound mixed with binders, along with any sensitizers, acceptors and usual additives. The photoconductive system contains, as acceptor additive, one or more monomeric or polymeric compounds that have electron-attracting substitutents (halogen, cyano, nitro groups) and that are selected from the group consisting of anthracene, acridine, the anhydrides of phthalic acid, maleic acid, pyromellitic acid, benzophenonetetracarboxylic acid, and the polymers of vinyl chloride, vinylidine chloride and nitrocellulose, in a quantity of 0.2 to 10% by weight based on total coating weight. After erasure of the latent electrostatic image, the recording material has a low residual charge, even when operated cyclically. Background imaging is thereby avoided.
摘要翻译： 描述了一种电子照相记录材料，其包括沉积在其上的导电基底层和光导体系，该系统包括任选的绝缘中间层，含有产生电荷的化合物的层和含有与粘合剂混合的电荷输送化合物的层 ，以及任何敏化剂，受体和常用添加剂。 光导体系含有一个或多个具有吸电子取代基（卤素，氰基，硝基）的单体或聚合化合物作为受体添加剂，其选自蒽，吖啶，邻苯二甲酸酐，马来酸酐 酸，均苯四酸，二苯甲酮四羧酸，以及氯乙烯，氯乙烯和硝基纤维素的聚合物，以总涂料重量计为0.2〜10重量％。 在静电图像被擦除之后，即使循环操作，记录材料也具有低剩余电荷。 从而避免背景成像。
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