Photosensitive member containing an azo dye

A photosensitive member with a photosensitive layer on or over an electrically conductive substrate, in which the photosensitive layer comprises a mixture of an azo pigment represented by the following general formula [IV] with an azo pigment represented by the following general formula [V]:

• ##STR620## in which Ar.sub.7, Ar.sub.8 and Ar.sub.9 represent independently an arylene group which may have a substituent;
• R.sub.5, R.sub.6, R.sub.7 and R.sub.8 represent independently a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group or a nitro group;
• Cp.sub.4, Cp.sub.5 and Cp.sub.6 represent independently a residual group of a coupler component having a phenolic hydroxy group selected from the group consisting of coupler components represented by the following general formulas [a]-[j]:
• ##STR621## wherein X is an oxygen atom, a sulfur atom or a nitrogen atom which may have a substituent;
• Y is a bivalent group of aromatic hydrocarbon or a bivalent group which may form a heterocyclic ring together with nitrogen atoms;
• z is a residual group which may be condensed with benzene ring to form a conjugated polycyclic ring or a heterocyclic ring;
• R.sub.9, R.sub.10, R.sub.12, R.sub.13, R.sub.16, R.sub.17, R.sub.18 and R.sub.19 are an alkyl group, an aralkyl group, an aryl group, or a heterocyclic group, each of which may have a substituent and form a ring with each other, or a hydrogen atom;
• R.sub.11 and R.sub.20 are independently an alkyl group, an aralkyl group, an aryl group or a heterocyclic group, each of which may have a substituent;
• R.sub.14, and R.sub.15 are a hydrogen atom, a halogen atom, or an alkyl group, an aralkyl group, an acyl group, an alkoxycarbonyl group, an aryl group, a condensed polycyclic group or a heterocyclic group, each of which may have a substituent;
• R.sub.21, R.sub.22, R.sub.23 and R.sub.24 are a hydrogen atom, a halogen atom, an alkyl group, a nitro group, substituted sulfone group, a carbamoyl group which may have a substituent on the nitrogen atom, a sulfamoyl group, a C-acylamino group which may have a substituent or a phthalimidyl group;
• R.sub.21 and R.sub.22, or R.sub.22 and R.sub.23 may form a ring with each other.

A photosensitive member with a photosensitive layer on or over an electrically conductive substrate, in which the photosensitive layer comprises a mixture of an azo pigment represented by the following general formula [III] with an azo pigment represented by the following general formula [V]:

• ##STR622## in which Ar.sub.5 and Ar.sub.9 represent independently an arylene group which may have a substituent;
• Ar.sub.6 is a residual group of a coupler component having a phenolic hydroxy group;
• R.sub.3, R.sub.4, R.sub.7 and R.sub.8 represent independently a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group or a nitro group;
• Cp.sub.3 and Cp.sub.6 represent independently a residual group of a coupler component having a phenolic hydroxy group selected from the group consisting of coupler components represented by the following general formulas [a]-[j]:
• ##STR623## wherein X is an oxygen atom, a sulfur atom or a nitrogen atom which may have a substituent;
• Y is a bivalent group of aromatic hydrocarbon or a bivalent group which may form a heterocyclic ring together with nitrogen atoms;
• z is a residual group which may be condensed with benzene ring to form a conjugated polycyclic ring or a heterocyclic ring;
• R.sub.9, R.sub.10, R.sub.12, R.sub.13, R.sub.16, R.sub.17, R.sub.18 and R.sub.19 are an alkyl group, an aralkyl group, an aryl group, or a heterocyclic group, each of which may have a substituent and form a ring with each other, or a hydrogen atom;
• R.sub.11 and R.sub.20 are independently an alkyl group, an aralkyl group, an aryl group or a heterocyclic group, each of which may have a substituent;
• R.sub.14, and R.sub.15 are a hydrogen atom, a halogen atom, or an alkyl group, an aralkyl group, an acyl group, an alkoxycarbonyl group, an aryl group, a condensed polycyclic group or a heterocyclic group, each of which may have a substituent;
• R.sub.21, R.sub.22, R.sub.23 and R.sub.24 are a hydrogen atom, a halogen atom, an alkyl group, a nitro group, substituted sulfone group, a carbamoyl group which may have a substituent on the nitrogen atom, a sulfamoyl group, a C-acylamino group which may have a substituent or a phthalimidyl group;
• R.sub.21 and R.sub.22, or R.sub.22 and R.sub.23 may form a ring with each other.

A photosensitive member with a photosensitive layer on or over an electrically conductive substrate, in which the photosensitive layer comprises a mixture of an azo pigment represented by the following general formula [V] with an azo pigment represented by the following general formula [VI]:

• ##STR624##
• Cp.sub.7 --N.dbd.N--Ar.sub.10 --N.dbd.N--Ar.sub.11 --N.dbd.N).sub.n3 Cp.sub.8 [VI]
• independently an alkyl group, an aralkyl group, an aryl group or a heterocyclic group, each of which may have a substituent;
• R.sub.14 and R.sub.15 are a hydrogen atom, a halogen atom, or an alkyl group, an aralkyl group, an acyl group, an alkoxycarbonyl group, an aryl group, a condensed polycyclic group or a heterocyclic group, each of which may have a substituent;
• R.sub.21, R.sub.22, R.sub.23 and R.sub.24 are a hydrogen atom, a halogen atom, an alkyl group, a nitro group, substituted sulfone group, a carbamoyl group which may have a substituent on the nitrogen atom, a sulfamoyl group, a C-acylamino group which may have a substituent or a phthalimidyl group;
• R.sub.21 and R.sub.22, or R.sub.22 and R.sub.23 may form a ring with each other.