Photoconductor for electrophotography

• US 6,268,095 B1
• Filed: 10/28/1999
• Issued: 07/31/2001
• Est. Priority Date: 10/29/1998
• Status: Expired due to Term

• Current Assignee: Fuji Electric Company Limited (Fuji Electric Systems Company Limited)
• Original Assignee: Fuji Electric Imaging Device Co., Ltd.
• Inventors: Kuroda, Masami
• Primary Examiner(s): GOODROW, JOHN L
• Application Number:
  US09/428,842
• Time in Patent Office: 642 Days
• Field of Search: 430/58.35, 430/58.4, 430/58.45
• US Class Current: 430/58.35
• CPC Class Codes: G03G 5/0612 containing nitrogen
• CPC Class Codes: G03G 5/0618 containing oxygen and nitrogen

Abstract

The present invention provides a new charge transport agent for use in a photosensitive layer in a positive-electrification-type electrophotographic photoconductor that can be used with high speed copying machines. The electrophotographic photoconductor of the invention includes an electrically conductive substrate and a photosensitive layer on the substrate. The photosensitive layer contains a charge generation agent and an electron transport compound described by the following general formula (I).

wherein R¹ and R² are each independently a halogen atom, a substituted or unsubstituted alkyl group having from 1 to 8 carbon atoms, a substituted or unsubstituted alkoxy group having form 1 to 8 carbon atoms, an arylalkyl group, a substituted or unsubstituted aryl group or a residue for forming a ring. A¹ is an oxygen atom or CR³R⁴ where R³ and R⁴ are each independently a cyano group or an alkoxycarbonyl group, m is an integer from 0 to 4 and n is an integer from 0 to 5.

Claims

1. A photoconductor for electrophotography comprising:

an electrically conductive substrate;

a photosensitive layer on said electrically conductive substrate;

said photosensitive layer having a charge generation agent and a charge transport agent;

said charge transport agent including an electron transport compound described by the following general formula (I);

wherein R¹ and R² are each independently selected from the group consisting of a halogen atom, a substituted or unsubstituted alkyl group having from 1 to 8 carbon atoms, a substituted or unsubstituted alkoxy group having from 1 to 8 carbon atoms, an arylalkyl group, a substituted or unsubstituted aryl group, and a residue forming a ring;

A¹ is an oxygen atom or CR³R⁴;

said R³ and said R⁴ are each independently selected from the group consisting of a cyano group and an alkoxycarbonyl group; and

m is an integer from 0 to 4; and

n is an integer from 0 to 5.

2. The photoconductor according to claim 1, wherein at least one of said R¹ substituents is an alkyl group.

3. The photoconductor according to claim 1, wherein at least one of said R² substituents is an alkyl group.

4. The photoconductor according to claim 1, wherein at least one of said R¹ substituents is an alkoxy group.

5. The photoconductor according to claim 1, wherein at least one of said R² substituents is a substituted or unsubstituted alkoxy group.

6. The photoconductor according to claim 1, wherein at least one of said R¹ substituents is an aryl group.

7. The photoconductor according to claim 1, wherein at least one of said R² substituents is an aryl group.

8. The photoconductor according to claim 1, provided that when m is at least 2 then at least two of said R¹ substituents are different from one another.

9. The photoconductor according to claim 1, provided that when said m is at least two then said R¹ substituents are identical.

10. The photoconductor according to claim 1, provided that when n is at least 2 then at least two of said R² substituents are different from one another.

11. The photoconductor according to claim 1, provided that when said n is at least 2 then said R² substituents are identical.

12. A photoconductor for electrophotography comprising:

an electrically conductive substrate;

a photosensitive layer on said electrically conductive substrate;

said photosensitive layer having a charge generation agent and a charge transport agent;

said charge transport agent including an electron transport compound described by the following general formula (II);

wherein R⁵, R⁶, R⁷ and R⁸ are each independently selected from the group consisting of a halogen atom and a substituted or unsubstituted alkyl group having from 1 to 8 carbon atoms;

R⁹ and R¹⁰ are each independently selected from the group consisting of a hydrogen atom, an alkyl group having from 1 to 8 carbon atoms and a substituted or unsubstituted aryl group;

B¹ and B² are each independently selected from the group consisting of an oxygen atom and CR¹¹R¹²;

said R¹¹ and said R¹² are each independently selected from the group consisting of a cyano group and an alkoxycarbonyl group; and

o, p, q and r are each independently an integer from 0 to 4.

13. The photoconductor according to claim 12, wherein at least one of said R⁵ substituents is an alkyl group.

14. The photoconductor according to claim 12, wherein at least one of said R⁶ substituents is an alkyl group.

15. The photoconductor according to claim 12, wherein at least one of said R⁷ substituents is an alkyl group.

16. The photoconductor according to claim 12, wherein at least one of said R⁸ substituents is an alkyl group.

17. The photoconductor according to claim 12, wherein at least one of said R⁹ substituents is an aryl group.

18. The photoconductor according to claim 12, wherein at least one of said R¹⁰ substituents is an aryl group.

19. The photoconductor according to claim 12, provided that when said o is at least 2 then said R⁵ substituents are identical.

20. The photoconductor according to claim 12, provided that when said o is at least 2 then said R⁵ substituents are different from one another.

21. The photoconductor according to claim 12, provided that when said p is at least 2 then said R⁶ substituents are identical.

22. The photoconductor according to claim 12, wherein said R⁶ substituent is an alkyl group.

23. The photoconductor according to claim 12, provided that when said p is at least 2 then at least two of said R⁶ substituents are different from one another.

24. The photoconductor according to claim 12, provided that when said q is at least 2 then said R⁷ substituents are identical.

25. The photoconductor according to claim 12, provided that when said q is at least 2 then at least two of said R⁷ substituents are different from one another.

26. The photoconductor according to claim 12, provided that when said r is at least 2 then said R⁸ substituents are identical.

27. The photoconductor according to claim 12, provided that when said r is at least 2 then at least two of said R⁸ substituents are different from one another.