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US 4,808,503 AGranted
Electrophotographic receptors with charge generating azo-substituted tetraphenyl-thiophene or thiophene 1,1-dioxide
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsYasuyuki Yamada, Hisato Itoh, Tsutomu Nishizawa, Akihiro Yamaguchi
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Abstract
Disclosed herein is a electrophotographic photoreceptor having high sensitivity and excellent durability. The photoreceptor has a photosensitive layer which contains an azo compound having the tetraphenylthiophene or tetraphenylthiophene-1,1-dioxide skeleton.
Claims16
An electrophotographic photoreceptor wherein at least one azo compound represented by the following general formula (I):
- ##STR49## wherein A means a coupler residuum, Q denotes a sulfur atom or >SO.sub.2, and l and m stand independently for 1 or 0, is contained in a photosensitive layer provided on an electrically-conductive base.
Dependencies are inferred from the claim text.