Electrophotographic photoconductor, azo compounds for use in the same, and intermediates for producing the azo compounds
AssigneeRicoh Company, Ltd.
InventorsTomoyuki Shimada, Masaomi Sasaki, Chiaki Tanaka
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Abstract
An electrophotographic photoconductor includes an electroconductive support and a photoconductive layer formed thereon which contains a compound having a charge generating moiety and a charge transporting moiety in the molecule thereof. As such a compound for use in the electrophotographic photoconductor, various compounds having a charge generating moiety derived from an azo compound and a charge transporting moiety derived from a triarylamine compound are proposed. Bisazo and trisazo compounds serving as such compounds are also proposed, together with intermediates for producing the bisazo and trisazo compounds.
Claims4
A bisazo compound with formula (13):
- wherein Ar1, Ar2, Ar3 and Ar4 are each independently an aryl group which may have a substituent;. and R is an ethylene group or a vinylene group.
A bisazo compound with formula (14):
- wherein R1 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;
- R is an ethylene or vinylene group.
A bisazo compound with formula (15):
- wherein Ar1 and Ar2 are each independently an aryl group which may have a substituent;
- R2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxyl group having 1 to 4 carbon atoms, a halogen atom, nitro group, or a dialkylamino group having 2 to 8 carbon atoms;
- R is an ethylene group or a vinylene group;
- when R2 is not a hydrogen atom, n is an integer of 1 to 3, and each R2 may be the same or different when n is 2 or 3.
A bisazo compound with formula (16):
- wherein R1 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;
- and R is an ethylene group or a vinylene group.
Dependencies are inferred from the claim text.