Claims
- 1. A photoconductive insulating element comprising a charge-generation aggregate photoconductive layer in electrical contact with a charge-transport photoconductor containing layer, wherein:
- (a) said photoconductor containing layer, comprises an organic photoconductors;
- (b) said aggregate photoconductive layer comprising (i) a continuous, electrically insulating polymer phase and (ii) a discontinuous phase dispersed in said continuous phase comprising a finely-divided, particulate, co-crystalline complex of at least one polymer having an alkylidene diarylene group in a recurring unit and at least one pyrylium-type dye salt, and (iii) at least one compound having the structure: ##STR31## in which Ar represents a substituted or unsubstituted arylene group, wherein said substituent is an electron withdrawing group or an electron accepting group;
- R.sub.1, R.sub.2, R.sub.3, and R.sub.4 which may be the same or resent a substituted or unsubstituted alkyl group having from 1 to 18 carbon atoms or a substituted or unsubstituted aryl group; and
- R.sub.7 and R.sub.8, which may be the same or different represent an electron withdrawing group or hydrogen except that when Ar is unsubstituted phenylene or unsubstituted anthrylene, R.sub.7 and R.sub.8 must be other than hydrogen.
- 2. A photoconductive insulating element having at least two layers comprising a charge-generation aggregate photoconductive layer in electrical contact with a charge-transport photoconductor containing layer, wherein:
- (a) said photoconductor containing layer comprises an organic photoconductive material
- (b) said aggregate photoconductive layer comprises (i) a continuous, electrically insulating polymer phase and (ii) a discontinuous phase dispersed in said continuous electrically insulating polymer phase comprising a finely-divided, particulate co-crystalline complex of at least one polymer having an alkylidene diarylene group in a recurring unit and at least one pyrylium-type dye salt, and (iii) at least one compound having the structure: ##STR32## in which Ar represents a substituted or unsubstituted arylene group, wherein said substituent is an electron withdrawing group or an electron accepting group;
- R.sub.1, R.sub.2, R.sub.3, and R.sub.4, which may be the same or different, represent a substituted or unsubstituted alkyl group having from 1 to 18 carbon atoms or a substituted or unsubstituted aryl group; and
- R.sub.7 and R.sub.8, which may be the same or different, represent an electron withdrawing group or hydrogen except that when Ar is unsubstituted phenylene or unsubstituted anthrylene, R.sub.7 and R.sub.8 must be other than hydrogen.
- 3. A photoconductive insulating element as in claim 2 wherein said compound is present in the aggregate photoconductive layer in an amount of about 0.1% to about 50% by weight of said aggregate layer.
- 4. A photoconductive insulating element as in claim 2 wherein said compound is present in the aggregate photoconductive layer in an amount of about 5% to about 20% by weight of said aggregate layer.
- 5. A photoconductive insulating element as in claim 2 wherein
- Ar represents substituted or unsubstituted phenylene, naphthylene, and anthrylene wherein said substituent is selected from the group consisting of --R.sub.6, --CN, --CO.sub.2 R.sub.9, --OR.sub.9, --CF.sub.3, --NO.sub.2, --SR.sub.9, and hydrogen;
- R.sub.1, R.sub.2, R.sub.3, and R.sub.4, which may be the same or different, represent a substituted or unsubstituted alkyl group having from 1 to 18 carbon atoms, substituted or unsubstituted phenyl, a napthyl or anthryl;
- R.sub.7 and R.sub.8, which may be the same or different, represent hydrogen, --CO.sub.2 R.sub.9, --CF.sub.3, --NO.sub.2, --SO.sub.2 F, and --CN, except that when Ar is unsubstituted phenylene or unsubstituted anthryl, R.sub.7 and R.sub.8 must be other than hydrogen; and
- R.sub.9 is an alkyl group having from 1-12 carbon atoms.
- 6. A photoconductive insulating element having at least two layers comprising a charge-generation aggregate photoconductive layer in electrical contact with a charge-transport photoconductor containing layer, wherein:
- (a) said photoconductor containing layer comprises a an organic photoconductive material;
- (b) said aggregate photoconductive layer comprises (i) a continuous electrically insulating polymer phase and (ii) a discontinuous phase dispersed in said continuous electrically insulating phase comprising a finely-divided, particulate co-crystalline complex of at least one polymer having an alkylidene diarylene group in a recurring unit at least one thiopyrylium-type dye salt, said continuous electrically insulating phase comprising and (iii) at least one compound having the formula: ##STR33## in which Ar represents substituted or unsubstituted phenylene, naphthylene, and anthrylene wherein said substituent is selected from the group consisting of --R.sub.9, --CN, --CO.sub.2 R.sub.9, --OR.sub.9, --CF.sub.3, --NO.sub.2, --SR.sub.9, and hydrogen;
- R.sub.1, R.sub.2, R.sub.3, and R.sub.4, which may be the same or different, represent a substituted or unsubstituted alkyl group having from 1 to 18 carbon atoms and substituted or unsubstituted phenyl, naphthyl and anthyryl;
- R.sub.7, and R.sub.8, which may be the same or different represent hydrogen, --CO.sub.2 R.sub.9, --CF.sub.3, --NO.sub.2, --SO.sub.2 F, and --CN, except that when Ar is unsubstituted phenylene or unsubstituted anthrylene R.sub.7, and R.sub.8 must be other than hydrogen; and
- R.sub.9 is an alkyl group having from 1-12 carbon atoms.
- 7. A photoconductive element according to claim 5 wherein said compound is present in the aggregate photoconductive layer in an amount of about 0.1% to about 50% by weight of said aggregate layer.
- 8. A photoconductive element according to claim 5 wherein said compound is present in the aggregate photoconductive layer in an amount of about 5% to about 20% by weight of said aggregate layer.
- 9. A photoconductive insulating element having at least two layers comprising a charge-generation aggregate photoconductive layer in electrical contact with a charge-transport photoconductor containing layer, wherein:
- (a) said photoconductor containing layer comprises an organic photoconductive material;
- (b) said aggregate photoconductive layer comprises (i) a continuous electrically insulating polymer phase and (ii) a discontinuous phase dispersed in said continuous electrically insulating phase comprising a finely-divided, particulate co-crystalline complex of at least one polymer having an alkylidene diarylene group in a recurring unit and at least one pyrylium-type dye salt, and (iii) at least one compound selected from the group consisting of: ##STR34##
- 10. A photoconductive element according to claim 9, wherein said compound is present in the aggregate photoconductive layer in an amount of about 0.1% to about 50% by weight of said aggregate layer.
- 11. A photoconductive element according to claim 9, wherein said compound is present in the aggregate photoconductive layer in an amount of about 5% to about 20% by weight of said aggregate layer.
Parent Case Info
This application is a continuation-in-part of U.S. Ser. No. 753,390 filed Dec. 22, 1976, now U.S. Pat. No. 4,111,693; H. E. Wright et al.
US Referenced Citations (3)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
753390 |
Dec 1976 |
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