G - Physics – 03 – G
Patent
G - Physics
03
G
96/14, 96/151, 9
G03G 5/06 (2006.01) C09B 56/06 (2006.01)
Patent
CA 1153237
ABSTRACT OF THE DISCLOSURE The present invention provides an electrophotographic sensitive element of a high sensitivity and a high flexibility comprising an electroconductive support and a photosensitive layer provided thereon and containing as an effective ingredient therein a disazo compound rrrepresented by the following general formula: Image wherein A is a radical selected from the group consisting of: Image , Image and Image in which X represents a ring selected from the group consisting of aromatic rings such as benzene ring and naphthalene ring, hetero rings such as indole ring, carbazole ring and benzofuran ring, and substituted derivatives thereof; Ar1 represents a radical selected from the group consisting of aromatic rings such as benzene ring and naphthalene ring, hetero rings such as dibenzofuran ring and substituted derivatives thereof; Ar2 and Ar3 represent radicals respectively selected from the group consisting of aromatic rings such as benzene ring and naphthalene ring, and substituted derivatives thereof; R1 and R3 represent radicals respectively selected from the group consisting of hydrogen atom, lower alkyl radicals and phenyl radical and substituted derivatives thereof: and R2 represents a radical selected from the group consisting of lower alkyl radicals, and carboxyl radical and esters thereof.
307028
Hashimoto Mitsuru
Ohta Masafumi
Sakai Kiyoshi
Sasaki Masaomi
Tsutsui Kyoji
Borden Ladner Gervais Llp
Ricoh Co. Ltd.
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