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cyclopentadiene derivative compounds and electrophotographic photoconductor comprising one cyclopentadiene derivative compound
| Details |
Inventors: Kawahara, Megumi; Yamada, Ikuko; Shoshi, Masayuki; Kojima, Akio;
Assignee: Ricoh Company, Ltd. (Tokyo, JP)
Primary Examiner: Dote; Janis L.
Assistant Examiner:
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Cyclopentadiene derivative compounds, and an electrophotographic photoconductor comprising one cyclopentadiene derivative compound are disclosed. The cyclopentadiene derivative compounds are useful for use in a photoconductive layer, and readily soluble in a binder resin. The electrophotographic photoconductor can be prepared by using a simple, effective production method. The electrophotographic photoconductor comprising one cyclopentadiene derivative compound provides a good light sensitivity and high durability. |
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DETAILED DESCRIPTION Accordingly, it is a general object of the present invention to provide an improved electrophotographic photoconductor comprising a novel and useful acceptor compound in which the above-mentioned problems are eliminated.
Another object of the present invention is to provide an electrophotographic photoconductor comprising a charge-transport acceptor compound included in a photoconductive layer, which photoconductor provides a good light sensitivity and high durability.
Still another object of the present invention is to provide a novel charge-transport acceptor compound which is suitable for a photoconductive layer and is readily soluble with a binder resin, to allow for a simple, efficient production process of the electrophotographic photoconductor.
The above-mentioned object of the present invention is achieved by an electrophotographic photoconductor comprising an electroconductive support and a photoconductive layer formed thereon comprising as an effective component at least one cyclopentadiene derivative compound represented by formula ?I!: ##STR1## wherein R.
sub.
1 and R.
sub.
4 independently represent a hydrogen atom, a halogen atom a cyano group, a nitro group, an alkyl group which may have a substituent, an aromatic group which may have a substituent, a heterocyclic group which may have a substituent, an alkoxycarbonyl group which may have a substituent, a carbamoyl group which may have a substituent, or an acyl group which may have a substituent, wherein R.
sub.
2 and R.
sub.
3 independently represent a hydrogen atom, an alkyl group which may have a substituent, an aromatic group which may have a substituent, or a heterocyclic group which may have a substituent, wherein X represents: an oxygen atom .
dbd.
O; a substitution group of a formula .
dbd.
C--?A!?B! wherein A and B independently represent a hydrogen atom, a halogen atom, a cyano group, an aromatic group which may have a substituent, or a group --COOR.
sub.
6 wherein R.
sub.
6 represents an alkyl group which may have a substituent, or an aromatic group which may have a substituent; or a substitution group of a formula
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Molecular Biology 
