Abstract A sensitizer for use in an electrophotographic light-sensitive material containing an organic photoconductor comprising a pyrylium salt containing a carbazole nucleus represented by the following general formula (I); wherein R1 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a haloalkyl group having from 1 to 5 carbon atoms a cyanoalkyl group having from 2 to 6 carbon atoms, a hydroxyalkyl group having 1 to 5 carbon atoms, or an acyl group; R2 represents a hydrogen atom, a halogen atom or a nitro group, R3 represents R4 represents a hydrogen atom or a hydroxy group; or R3 and R4 when taken together form a substituted or unsubstituted benzene or naphthalene ring, said substituents being an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 3 carbon atoms, a nitro group or a halogen atom; R5 represents a hydrogen atom or R6 represents a hydrogen atom, a halogen atom, an amino group, an alkylamino group having from 1 to 4 carbon atoms or an alkyl group having 1 to 5 carbon atoms; X represents Cl , Br , I , ClO4 , No3 , HSO4 or BF4 .
AN ELECTROPHOTOGRAPHIC LIGHT-SENSITIVE ELEMENT COMPRISING A SUPPORT HAVING THEREON A LAYER OF AN ORGANIC PHOTOCONDUCTOR CONTAINING A SENSITIZER COMPRISING A PYRYLIUM SALT CONTAINING A CARBAZOLE NUCLEUS REPRESENTED BY THE FOLLOWING GENERAL FORMULA (1):
Claim 2
Dependent Claim
33 words
AN ELECTROPHOTOGRAPHIC LIGHT-SENSITIVE ELEMENT COMPRISING A SUPPORT HAVING THEREON A LAYER OF AN ORGANIC PHOTOCONDUCTOR CONTAINING A SENSITIZER COMPRISING A PYRYLIUM SALT CONTAINING A CARBAZOLE NUCLEUS REPRESENTED BY THE FOLLOWING GENERAL FORMULA (1):
Claim 3
Dependent Claim
14 words
The electrophotographic light-sensitive element of claim 1, wherein said organic photoconductor is polyvinyl carbazole.
Claim 4
Dependent Claim
11 words
The electrophotographic light-sensitive element of claim 1, wherein said sensitizer is
Claim 5
Dependent Claim
12 words
The electrophotographic light-sensitive element of claim 3, wherein said pyrylium salt is
Claim 6
Dependent Claim
29 words
The electrophotographic light-sensitive element of claim 1, wherein said sensitizer is present in an amount of 0.01 to 15% by weight based on the weight of said organic photoconductor.
Claim 7
Dependent Claim
20 words
The electrophotographic light-sensitive element of claim 1 wherein said layer has a dried thickness of from 5 to 50 microns.
Claim 8
Dependent Claim
13 words
The electrophotographic light-sensitive element of claim 1 where said support is electrically conductive.