Abstract: A photoconductor for electrophotography with excellent resistance against oxidation has a charge transport layer which contains at least two kinds of oxidants and at least one charge transport material. The charge transport material is at least one selected from the group consisting of charge transport materials represented by general formulas (Ia) and (Ib). One oxidant is an antioxidant represented by general formula (II). The second oxidant is at least one selected from the group consisting of phenolic antioxidants, thioether antioxidants, phosphorus containing antioxidants excluding the triphenylphosphorus antioxidants, and amine antioxidants.

Abstract: A photoconductor for electrophotography includes a distyryl compound of the general formula (I) as a charge generation material and a bisazo compound of the general formula (II) as a charge transport material.

Abstract: A photoconductor for electrophotography comprises an electroconductive substrate and a photosensitive layer formed on the substrate. The photosensitive layer includes a novel bisazo compound as a charge generating substance therein. The bisazo compound is represented by the following general formula: ##STR1## wherein, A stands for a coupler residue.

Abstract: A photoconductor for electrophotography comprises an electroconductive substrate and a photosensitive layer formed on the substrate. The photosensitive layer includes a novel bisazo compound as a charge generating substance therein. The bisazo compound is represented by the following general formula: ##STR1## wherein, A stands for a coupler residue.

Abstract: A photoconductor for electrophotography comprises an electroconductive substrate and a photosensitive layer formed on the substrate. The photosensitive layer includes a novel bisazo compound as a charge generating substance therein. The bisazo compound is represented by the following general formula: ##STR1## wherein, A stands for a coupler residue.

Abstract: A photoconductor for electrophotography comprises an electroconductive substrate and a photosensitive layer formed on the substrate. The photosensitive layer includes a novel bisazo compound as a charge generating substance therein.

Abstract: A photoconductor for electrophotography comprises an electroconductive substrate and a photosensitive layer formed on the substrate. The photosensitive layer includes a novel bisazo compound as a charge generating substance therein. The bisazo compound is represented by the following general formula: ##STR1## wherein, A stands for a coupler residue.

Abstract: A photoconductor for electrophotography, including an electroconductive substrate; and a photosensitive layer formed on the electroconductive substrate including a charge generating substance and a charge transporting substance which is at least one compound represented by general formula (II): ##STR1## wherein each of R.sub.9, R.sub.10, R.sub.11 and R.sub.12 is selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group and an aryl group, and each of R.sub.13, R.sub.14, R.sub.15 and R.sub.16 is selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group, and a substituted or unsubstituted aryl group and heterocyclic group.

Abstract: A photoconductor for electrophotography comprises an electroconductive substrate; and a photosensitive layer formed on the electroconductive substrate. The photosensitive layer includes a charge generating substance and a charge transporting substance including at least one hydrazone compound represented by general formula (I): ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group and an aryl group, and each of R.sub.5, R.sub.6, R.sub.7 and R.sub.8 is selected from the group consisting of an alkyl group, and a substituted or unsubstituted aryl group, aralkyl group and heterocyclic group.

Abstract: A photoconductor for electrophotography comprises an electroconductive substrate and a photosensitive layer formed on the substrate. The photosensitive layer includes a novel bisazo compound as a charge generating substance therein. The one type of the bisazo compound is represented by the following general formula: ##STR1## wherein, A stands for a coupler residue.

Abstract: A photoconductor for electrophotography includes an electroconductive substrate; and a photosensitive layer formed on the substrate. The photosensitive layer includes a charge generating substance consisting essentially of at least one polycyclic compound represent by general formula (I) and at least one azo compound represented by general formula (II). ##STR1## wherein X is selected from the group consisting of a hydrogen atom, a halogen atom and a cyano group and n is an integer of 0 to 4; ##STR2## wherein R is selected from the group consisting of a hydrogen atom, a halogen atom and a substituted or unsubstituted alkyl group and alkoxy group, Z1 is selected from the group consisting of a substituted or unsubstituted alkyl group, aryl group and aromatic heterocyclic group, Z.sub.2 is selected from the group consisting of a hydrogen atom, a cyano group, a carbomoyl group, a carboxyl group, an ester group and an acyl group, each of Z.sub.3 and Z.sub.

Abstract: A photoconductor for electrophotography comprises a substrate and a photosensitive layer formed thereon and including a novel hydrazone compound as a charge transporting substance. The hydrazone compound is represented by the following general formula: ##STR1## Wherein, A is selected from the residual group consisting of an aromatic residual group, a condensed polycyclic residual group, and a heterocyclic residual group, which groups may be or not may be substituted, R.sub.1 is selected from the atom or group consisting of any one of a hydrogen atom, a halogen atom, an alkyl group, an acyl group or a dialkylamino group, and each of R.sub.2 and R.sub.3 is selected from the group consisting of an alkyl group, an aryl group, an alkenyl group, an aralkyl group and a thenyl group, which groups may be or not may be substituted.

Abstract: A photoconductor for electrophotography comprises an electroconductive substrate and a photosensitive layer formed thereon and including a novel compound as a charge transporting substance. This compound is represented by the following general formula: ##STR1## wherein, R1 is selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group and an alkoxy group, each of R2 and R3 is selected from the group consisting of an alkyl group, an aryl group and a heterocyclic group, the last two groups of which may be substituted and n is an integer of 1 or 2.

Abstract: A photoconductor for electrophotography includes an electroconductive substrate and a photosensitive layer formed on the substrate. The photosensitive layer includes a novel azo compound as a charge generating substance therein. One example of the azo compound is represented by general formula: ##STR1## wherein A stands for a coupler residue, and each of R.sub.1 and R.sub.2 is one of a hydrogen atom, a halogen atom, an alkyl group and an alkoxy group.

Abstract: A photoconductor for electrophotography comprises a novel organic compound as a charge transporting substance. The organic compounds is represented by the following general formula: ##STR1## wherein, each of R.sub.1 to R.sub.4 stands for a hydrogen atom, a halogen atom, an alkoxy group, or an alkyl group, an aryl group, an alkenyl group, an aralkyl group, a thienyl group, each of which may have a substituent(s).

Abstract: A photoconductor for electrophotography includes an electroconductive substrate and a photosensitive layer formed on the substrate. The photosensitive layer includes a novel bisazo compound as a charge generating substance therein. One type of bisazo compound is represented by general formula: ##STR1## wherein, A stands for a coupler residue.

Abstract: A photosensitive member for electrophotography have a photosensitive layer 20 provided on an electroconductive substrate 1 and, containing a compound selected from among derivatives of thiophene, diphenylthiophene or oxadiazole. When the surface of the photosensitive member was positively charged and then irradiated with white light, the half decay exposure amount with which the surface potential is decreased to half is 5 to 10 lux.multidot.sec. The photosensitive member is capable of being used in semiconductor laser printers.

Abstract: A photoconductor for electrophotography comprises an electroconductive substrate and a photosensitive layer formed on the substrate. The photosensitive layer includes a novel bisazo compound as a charge generating substance therein. The one type of the bisazo compound is represented by the following general formula: ##STR1## wherein, A stands for a coupler residue.

Abstract: A photoconductor for electrophotography comprises an electroconductive substrate and a photoconductive layer formed on the substrate and including a novel disazo compound as a charge generating layer. The disazo compound is represented by the following general formula: ##STR1## wherein X1 stands for one of an alkyl group, an aryl group and an aromatic heterocyclic group, each of which groups may be or not may be substituted, X.sub.2 stands for one of a hydrogen atom, a cyano group, a carbamoyl group, a carboxyl group, an ester group and an acyl group, each of X.sub.3 and X.sub.4 stands for one of a hydrogen atom, a halogen atom, a nitro group, an alkyl group and an alkoxyl group, both of last two groups may be or not may be substituted, Z stands for one of a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aryl group and an aromatic heterocyclic group, each of which groups may be or not may be substituted and --N.dbd.N--D--N--N.dbd.N-- stands for a disazo residual group.

Abstract: A photosensitive member for electrophotography have a photosensitive layer 20 provided on an electroconductive substrate 1 and, containing a compound selected from among derivatives of thiophene, diphenylthiophene or oxadiazole. When the surface of the photosensitive member was positively charged and then irradiated with white light, the half decay exposure amount with which the surface potential is decreased to half is 5 to 10 lux.cndot.sec. The photosensitive member is capable of being used in semiconductor laser printers.