G - Physics – 03 – G
Patent
G - Physics
03
G
96/168, 96/200
G03G 5/09 (2006.01) C09B 56/06 (2006.01) G03G 5/06 (2006.01)
Patent
CA 1165611
Abstract of The Disclosure An electrophotographic element comprising an electrically conductive substrate and a monolayer or multilayer type photo- sensitive layer, superposed thereon, containing as an effective ingredient a disazo pigment having the general formula (I): Image (I) (wherein Ar1 and Ar2 can each represent a phenylene group. However, when Ar1 is 1,4-phenylene group Ar2 is 1,2- or 1,3-phenylene group; when Ar1 is 1,3-phenylene group Ar2 may be any one of 1,2-, 1,3- and 1,4-phenylene groups; and when Ar1 is 1,2-phenylene group Ar2 is 1,3-phenylene group. X can represent aromatic rings such as benzene ring, naphthalene ring and the like, hetero rings such as indole ring, carbazole ring, benzofuran ring and the like or their substitution products; Ar3 can represent aromatic rings such as benzene ring, naphthalene ring and the like, hetero rings such as dibenzofuran ring and the like or their substitution products; and R can represent a hydrogen atom, a lower alkyl group, phenyl group or its substitution product.) ATTACHED SHEET Priority to be claimed based on Japanese Patent Applications Serial No. Filing Date 170421/1979 December 28, 1979 170422/1979 December 28, 1979 172602/1979 December 29, 1979 54632/1980 April 23, 1980 141923/1980 October 13, 1980 (167015/1980) November 26, 1980 (167016/1980) November 26, 1980 The serial numbers of last two application will follow.
367557
Borden Ladner Gervais Llp
Ricoh Co. Ltd.
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