摘要:
This invention relates to a novel electrophotographic imaging process that includes: (a) applying an electrical charge to a surface of an organophotoreceptor comprising: (i) a charge transport composition comprising molecules having the formula where the average n is between 1 and 1000; R1 and R2 are, independently, hydrogen, alkyl, unsaturated hydrocarbon, ether, cycloalkyl, or aryl; X is a bis(fluorene-4-carboxyl)alkane group; Y is a sulfonyldiphenylene; Z is X=O or two hydrogens; and Q is O or N—N(R1)—Y—N(R2)—NH2; (ii) a charge generating compound; and (iii) an electrically conductive substrate over which said charge transport composition and said charge generating compound are located; (b) imagewise exposing said surface of said organophotoreceptor to radiation to dissipate charge in selected areas and thereby form a pattern of charged and uncharged areas on said surface; (c) contacting said surface with a toner to create a toned image; and (d) transferring said toned image to a substrate.
摘要翻译:本发明涉及一种新颖的电子照相成像方法,其包括:(a)将电荷施加到有机光感受器的表面,包括:(i)电荷传输组合物,其包含具有下式的分子,其中平均n在1和1000之间; R 1和R 2分别独立地为氢,烷基,不饱和烃,醚,环烷基或芳基; X是双(芴-4-羧基)烷烃基团; Y是磺酰基二亚苯基; Z是X = O或两个氢; 并且Q是O或N-N(R 1 H 2)-Y-N(R 2 H 2)-NH 2; (ii)电荷产生化合物; 和(iii)所述电荷输送组合物和所述电荷产生化合物所在的导电基底; (b)将所述有机光感受器的所述表面成像曝光于辐射以在选定区域中散发电荷,从而在所述表面上形成带电和不带电区域的图案; (c)使所述表面与调色剂接触以产生调色图像; 和(d)将所述调色图像转印到基底上。
摘要:
Improved organophotoreceptor include: (a) a charge transport compound having the formula where R1 has a structure of: in which Ar is selected form the group consisting of; R4 is a hydrogen or an aromatic group and R2 and R3 are, independently, an (N,N-disubstituted) arylamine group; (b) a charge generating compound; and (c) an electrically conductive substrate. Additional improved charge transport compounds have the formula where R1 has a structure of and R2 is a julolidene group or a carbazole group.
摘要:
A double-layered positively-charged organic photoreceptor has a charge transport layer with effective adhesion to an electroconductive support and effective resistance against dissolving when in contact with a hydrocarbon-based solvent of a wet developer. Therefore, the double-layered positively-charged organic photoreceptor requires neither anodizing on the electroconductive support nor an additional adhesive layer, and is compatible with wet developing methods. The double-layered positively-charged organic photoreceptor includes: an electroconductive support; a charge transport layer formed on a surface of the electroconductive support and including a charge transport material for transporting holes, a polycarbonate-based first binder resin, and a second binder resin of a polyester copolymer with a biphenylfluorene group; and a charge generating layer formed on the surface of the charge transport layer.
摘要:
A single layered electrophotographic photoreceptor has a photoreceptor layer comprising polyester resin as a binder resin having biphenyl fluorene units in the main chain, and specific phenolic compounds as antioxidants. The electrophotographic photoreceptor according to the present invention enables obtaining a better image by suppressing a decrease in dark decay and charged electric potential due to repeated use and has an extended electrical lifetime.
摘要:
An electrophotographic photosensitive member has a support and a photosensitive layer provided thereon. The photosensitive layer contains a carixarene compound having specific structure. Also disclosed are a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member.
摘要:
A flexible electrophotographic imaging member including a supporting substrate coated with at least one imaging layer comprising hole transporting material containing at least two long chain alkyl carboxylate groups dissolved or molecularly dispersed in a film forming binder.
摘要:
An electrophotographic photoconductor includes an electroconductive support and a single-layered photoconductive layer formed thereon, containing a charge transporting material, a binder resin, and a simultaneously pulverized mixture including at least one disazo pigment of formula (1) and at least one trisazo pigment of formula (2), which is obtained by simultaneously pulverizing those azo pigments: ##STR1## wherein R.sup.1 and R.sup.2 each is hydrogen, a halogen atom, trifluoromethyl group, nitro group or cyano group; R.sup.3 is hydrogen, chlorine, fluorine, iodine, bromine, nitro group or cyano group; and Ar.sup.1, Ar.sup.2 and Ar.sup.3 each is a coupler radical, which may be the same or different.
摘要翻译:电子照相感光体包括导电载体和形成在其上的单层光导电层,其中含有电荷输送材料,粘合剂树脂和同时粉碎的混合物,其包含至少一种式(1)的双偶氮颜料和至少一种三偶氮颜料 (2)其中R1和R2各自为氢,卤素原子,三氟甲基,硝基或氰基;(2)通过同时粉碎这些偶氮颜料获得的式(2) R3是氢,氯,氟,碘,溴,硝基或氰基; Ar 1,Ar 2和Ar 3各自为可以相同或不同的成色剂基团。
摘要:
This invention provides an electrophotographic photosensitive material comprising a conductive support having thereon a photoconductive layer containing at least an inorganic photoconductor and a binder resin, wherein the photoconductive layer contains an N-hydroxyimide compound represented by the following general formula (I): ##STR1## wherein Z represents an organic residue capable of forming a cyclic compound having a saturated or unsaturated bond, thereby increasing its photosensitivity and improving its chargeability, dark charge retentivity and photosensitivity over a wide range from visible to infrared regions. Upon actual reproduction, the inventive material provides a fog-free and clear image even under severe conditions such as high temperature and high humidity conditions (e.g., 30.degree. C. and 80% RH).
摘要:
Techniques are provided for regenerating photoconductor elements, particularly those of the unipolar, homogeneous type. These techniques utilize a low-voltage to moderate-voltage reverse charge. Also provided are new photoconductor elements useful in the practice of such techniques.
摘要:
Light-sensitive compositions are provided, containing at least one bisazulenium salt compound of the general formulae (1) and (2): ##STR1## wherein all the symbols are defined in the specification. Electrophotographic photoreceptors containing the present composition have high sensitivity and stable potential characteristic in repeated use. The present compositions are further usable in optical information-recording media, and the media containing the present composition have sufficient preservation stability, high sensitivity and sufficient S/N ratio.