Electrophotosensitive material

An electrophotosensitive material comprising:

• a conductive substrate;
• and
• a single layer photosensitive layer provided on said conductive substrate, said single layer photosensitive layer including, as a charge generating material, a bis azo pigment according to formula (1):
• ##STR63## wherein A.sup.1 and A.sup.2 denote coupler residual groups which are the same or different from one another;
• R.sup.1 denotes a member selected from the group consisting of:
• a hydrogen atom, an alkyl group, an aryl group and a heterocyclic group, wherein the alkyl group, the aryl group or the heterocyclic group may have a substituent selected from the group consisting of halogen atom, amino group, hydroxyl group, carboxyl group that may be esterified, cyano group, alkyl group with 1 to 6 carbon atoms, alkoxy group with 1 to 6 carbon atoms, and alkenyl group with 2 to 6 carbon atoms that may possess an aryl group;
• n is 0 or 1;
• and
• a perylene pigment according to formula (51):
• ##STR64## wherein R.sup.70, R.sup.71, R.sup.72 and R.sup.73 are the same or different, and are selected from the group consisting of:
• hydrogen atoms, alkyl groups, alkoxyl groups and aryl groups;
• said photosensitive layer further including, as a charge transferring material, a diamine compound according to formula (2):
• ##STR65## wherein R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are the same or different, and are selected from the croup consisting of:
• alkyl groups, alkoxy groups, halogen atoms, aryl groups, nitro groups, cyano groups and alkylamino groups;
• p and q are the same or different, and are integers in the range of 0 to 3;
• and k, l, m and o are the same or different, and are integers in the range of 0 to 2;
• wherein said bis-azo pigment (1) is present in an amount of 10 to 80% by weight based on a total amount of said perylene pigment and said bis-azo pigment (1).