Patent US5125982A successfully refreshed from Google Patents.
Patent US4910110A successfully refreshed from Google Patents.
US4910110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductor including hydrazone compound in a photoconductive layer
Assignee: Fuji Electric Co Ltd
•
Filing: 1988-12-20
•
Granted: 1990-03-20
•
Expires: 2008-12-20
Abstract
Abstract A photoconductor for electrophotography comprising a novel hydrazone compound or derivative as a charge transporting substance. A hydrazone compound is represented by the following general formula: <IMAGE> wherein, each of R1, R2, R3, R4, R5 and R6 stands for a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, a nitro group, an allyl group, or an aryl group which may have a substituent(s) or an amino group which may have a substitutent(s); and n stands for an integer of 0, 1 or 2.
Inventors
- 👤 Masami Kuroda
- 👤 Youichi Nakamura
- 👤 Noboru Furusho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:22
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0666; G03G5/0668; C; C09; C09B; C09B23/00; C09B23/16; C09B23/162; C09B23/164; C09B55/00; C09B55/002; C09B55/003; G03G5/0622; G03G5/0644; G03G5/0661
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
A photoconductor for electrophotography comprising: a substrate; and a photoconductive layer formed on said substrate, said photoconductor layer including a charge generating substance and at least one hydrazone compound represented by the following general formula (I) as a charge transporting substance: ##STR12## wherein each of R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 stands for a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, a nitro group, an allyl group, or an aryl or an amino group, both of which may have at least one substituent; and n stands for an integer of 0, 1 or 2.
Claim 2
Dependent Claim
113 words
A photoconductor for electrophotography comprising: a substrate; and a photoconductive layer formed on said substrate, said photoconductor layer including a charge generating substance and at least one hydrazone compound represented by the following general formula (I) as a charge transporting substance: ##STR12## wherein each of R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 stands for a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, a nitro group, an allyl group, or an aryl or an amino group, both of which may have at least one substituent; and n stands for an integer of 0, 1 or 2.
Claim 3
Dependent Claim
41 words
A photoconductor as claimed in claim 1, wherein said photoconductive layer comprises a layer including a dispersion of said charge generating substance and a charge transport substance selected from hydrazone compounds represented by the general formulae (I) in a binder resin.
Claim 4
Dependent Claim
39 words
A photoconductor as claimed in claim 1, wherein said photoconductive layer comprises a laminate of a charge transporting layer including a charge transporting substance selected from hydrazone compounds represented by the general formulae (I) and a charge generating layer.
Claim 5
Dependent Claim
121 words
A photoconductor for electrophotography comprising: a substrate; and a photoconductive layer formed on said substrate, said photoconductive layer including a charge generating substance and a least one hydrazone compound represented by the following general formula (II) as a charge transporting substance: ##STR13## wherein each of R 7 , R 8 , R 9 , R 10 , and R 11 stands for a hydrogen atom, a hydroxy group, an alkyl group, an alkoxy group, a hydroxy group, an acyl group, a nitro group, or an aryl group or an amino group, both of which may have at least one substituent, and m stands for an integer 2, 3, 4 or 5; n stands for an integer of 0, 1 or 2.
Claim 6
Dependent Claim
121 words
A photoconductor for electrophotography comprising: a substrate; and a photoconductive layer formed on said substrate, said photoconductive layer including a charge generating substance and a least one hydrazone compound represented by the following general formula (II) as a charge transporting substance: ##STR13## wherein each of R 7 , R 8 , R 9 , R 10 , and R 11 stands for a hydrogen atom, a hydroxy group, an alkyl group, an alkoxy group, a hydroxy group, an acyl group, a nitro group, or an aryl group or an amino group, both of which may have at least one substituent, and m stands for an integer 2, 3, 4 or 5; n stands for an integer of 0, 1 or 2.
Claim 7
Dependent Claim
41 words
A photoconductor as claimed in claim 4, wherein said photoconductive layer comprises a layer including a dispersion of said charge generating substance and a charge transporting substance selected from hydrazone compounds represented by the general formulae (II) in a binder resin.
Claim 8
Dependent Claim
44 words
A photoconductor as claimed on claim 4, wherein said photoconductive layer comprises a laminate of a charge transporting layer including a charge transporting substance selected from hydrazone compounds represented by the general formulae (II) and a charge generating layer including said charge generating substance.
References Cited (Backward Citations)
US3484237A
Cited
JPS4866444A
Cited
US4367273A
Cited
US4278747A
Cited
DE3019909A1
Cited
DE3139524A1
Cited
DE3141306A1
Cited
DE3203621A1
Cited
US4415640A
Cited
DE3303830A1
Cited
US4666809A
Cited
JPS5950445A
Cited
EP0131140A2
Cited
US4568623A
Cited
JPS6039952A
Cited
JPS6093443A
Cited
US4606986A
Cited
US4677045A
Cited
US4624904A
Cited
US4731315A
Cited
US4702983A
Cited
JPS62264055A
Cited
US4808503A
Cited
US4783387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |