Abstract: A photoconductive composition comprising at least one disazo compound represented by the following general formula (I): ##STR1## wherein X, L.sub.1, L.sub.2, L.sub.3, L.sub.4, L.sub.5, L.sub.6, A, m and n are as defined in the description and an electrophotographic light-sensitive material containing the disazo compound are disclosed.The disazo compound is effective for improving both sensitivity and durability of the light-sensitive material.

Abstract: Disazo compounds of a specified structure as a photoconductive element for photoreceptors in an electrophotographic process, which achieve higher photosensitivity and higher durability compared with conventional organic photoconductive materials, useful with copying machines, printers, video camera pickup tubes and semiconductor circuits for signal transfer and scanning.

Abstract: Disazo compounds as well as the compositions an electrophotographic light-sensitive materials utilizing them are disclosed. The disazo compounds are represented by the general formula (I): ##STR1## wherein the substituents within the general formula (I) are defined within the specification. By utilizing the specifically disclosed disazo compounds the electrophotographic light-sensitive material has high sensitivity and high durability.

Abstract: An electrophotographic light sensitive element is disclosed. The element is comprised of a photoconductive support base having provided thereon a disazo compound dispersed in a binder or a charge carrier-transporting medium. A novel group of disazo compounds are disclosed as represented by the general formula (I), (II) and (III) as defined within the specification. In addition to the light sensitive element the disazo compounds and electrophotographic compositions containing them are part of the invention disclosed. The electrophotographic light sensitive elements have high sensitivity and long durability.

Abstract: Disazo compounds as well as the compositions and electrophotographic light-sensitive materials utilizing them are disclosed. The disazo compounds are represented by the general formula (I): ##STR1## wherein the substituents within general formula (I) are defined within the specification. By utilizing the specifically disclosed disazo compounds the electrophotographic light-sensitive material has high sensitivity and high durability.

Abstract: A photoconductive composition comprising a disazo compound represented by formula (I): ##STR1## and an electrophotographic light sensitive element containing the compound. The element has a high sensitivity and high durability.