Japanese Patent JPS6122300

B2

PURPOSE:To use a specific disazo pigment effective for various electrophotographic processes. CONSTITUTION:The disazo pigment having a 2, 2'-dinitrobiphenyl nucleus represented by the formula I, where X denotes a ( substituent) aromatic ring such as benzene ring or naphthalene ring or a (substituent) heterocyclic ring such as indole ring, carbazole ring or benzofuran ring, Ar1 denotes a (substituent) aromatic ring or a (substituent) heterocyclic ring such as dibenzofuran ring, Ar2 and Ar3 denote a (substituent) aromatic ring, R1 and R3 denote a hydrogen atom (substituent) lower alkyl or (substituent) phenyl and R2 denotes a lower alkyl or a carboxy (ester), is contained as an effective ingredient in a photosensitive layer provided on an electroconductive substrate. The range of selection of said pigment is wide. Thus, the sensitivity and flexibility of the electrophotographic photosensitive material can be heightened.

JPS6198353	PHOTOSENSOR CONTAINING AROMATIC ETER HOLE TRANSFER LAYER
JP4246113	Electrophotographic photosensitive member, image forming method using it, image forming apparatus and process cartridge for image forming apparatus
JPH07128895	ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND ELECTROPHOTOGRAPHIC DEVICE

OOTA MASABUMI
TSUTSUI KYOJI
SAKAI KYOSHI

JP2660378A

May 31, 1986

March 10, 1978

Click for automatic bibliography generation  

RICOH KK

G03G5/06; C09B35/08; G03G5/04; H01L31/08; H01L51/42

Previous Patent: A processing unit, a disposal method, and a manufacturing method of a device

Next Patent: SKID CAR