Electrophotographic photoconductor
AssigneeRicoh Company, Ltd.
InventorsTetsuro Suzuki, Tatsuya Niimi, Tomoyuki Shimada
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Abstract
An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer formed thereon containing a polycarbonate resin with a triarylamine structure on the main chain and/or side chain thereof, which serves as a high-molecular weight charge transport material, and at least as a charge generation material an azo compound of formula (1) or (2) specified in the specification.
Claims16
An electrophotographic photoconductor comprising an electroconductive support, and a photoconductive layer formed thereon which comprises a polycarbonate resin comprising a triarylamine structure on the main chain and/or side chain thereof, and at least one charge generation material selected from the group consisting of an azo compound represented by formula (1):
- ##STR160## wherein Cp.sup.1 and Cp.sup.2 are each a coupler radical which may be the same or different, provided that at least Cp.sup.1 or Cp.sup.2 is a coupler radical component represented by formula (1-a);
- ##STR161## in which Cp.sup.3 is a bivalent coupler radical;
- Ar.sup.201 and Ar.sup.202 are each an aryl group which may have a substituent;
- Ar.sup.203 is an arylene group which may have a substituent;
- A is ethylene group, vinylene group, oxygen atom or sulfur atom;
- and m.sup.201 is an integer of 0 to 2;
- and
- an azo compound represented by formula (2):
- ##STR162## wherein Cp.sup.4 is a bivalent coupler radical;
- Cp.sup.5 is a monovalent coupler radical;
- Ar.sup.201, Ar.sup.202, Ar.sup.203, A and m.sup.201 are the same as those as previously defined in formula (1-a);
- and n.sup.201 is an integer of 0 to 2.
An electrophotographic photoconductor comprising an electroconductive support, and a photoconductive layer formed thereon which comprises a polycarbonate resin comprising a triarylamine structure on the main chain and/or side chain thereof, and a charge generation material comprising an azo compound of formula (1):
- ##STR163## wherein Cp.sup.1 and Cp.sup.2 are each a coupler radical which may be the same or different, provided that at least Cp.sup.1 or Cp.sup.2 is a coupler radical component represented by formula (1-a);
- ##STR164## in which Cp.sup.3 is a bivalent coupler radical;
- Ar.sup.201 and Ar.sup.202 are each an aryl group which may have a substituent;
- Ar.sup.203 is an arylene group which may have a substituent;
- A is ethylene group, vinylene group, oxygen atom or sulfur atom;
- and m.sup.201 is an integer of 0 to 2.
An electrophotographic photoconductor comprising an electroconductive support, and a photoconductive layer formed thereon which comprises a polycarbonate resin comprising a triarylamine structure on the main chain and/or side chain thereof, and a charge generation material comprising an azo compound represented by formula (2):
- ##STR165## wherein Cp.sup.4 is a bivalent coupler radical;
- Cp.sup.5 is a monovalent coupler radical;
- Ar.sup.201 and Ar.sup.202 are each an aryl group which may have a substituent;
- Ar.sup.203 is an arylene group which may have a substituent;
- A is ethylene group, vinylene group, oxygen atom or sulfur atom;
- m.sup.201 is an integer of 0 to 2;
- and n.sup.201 is an integer of 0 to 2.
Dependencies are inferred from the claim text.