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
Life of this patent
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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.
Claims6
A trisazo compound with formula (17):
- wherein Ar1 and Ar2 are each independently an aryl group which may have a substituent;
- R1 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxyl group having 1 to 4 carbon atoms, or a halogen atom;
- and Y is an ethylene group or a vinylene group.
A trisazo compound with formula (18):
- wherein R2 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;
- and Y is an ethylene group or a vinylene group.
A trisazo compound with formula (19):
- wherein Ar1 and Ar2 are each independently an aryl group which may have a substituent;
- R1 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxyl group having 1 to 4 carbon atoms, or a halogen atom;
- R3 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;
- Y is an ethylene group or a vinylene group;
- and n is an integer of 1 to 3, and when n is 2 or 3, each R3 may be the same or different.
A trisazo compound with formula (20):
- wherein R2 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;
- and Y is an ethylene group or a vinylene group.
A trisazo compound with formula (21):
- wherein Ar1 and Ar2 are each independently an aryl group which may have a substituent;
- R1 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxyl group having 1 to 4 carbon atoms, or a halogen atom;
- R3 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;
- Y is an ethylene group or a vinylene group;
- and n is an integer of 1 to 3, and when n is 2 or 3, each R3 may be the same or different.
A trisazo compound with formula (22):
- wherein R2 is a hydrogen atom, or an alkyl group having 1 to 4 carbon atoms;
- and Y is an ethylene group or a vinylene group.
Dependencies are inferred from the claim text.