US4603097A
Expired / Lapsed
US
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Styrene derivatives and electrophotographic photoconductor comprising one of the styrene derivatives
Assignee: Ricoh Co Ltd
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Filing: 1984-08-31
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Granted: 1986-07-29
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Expires: 2004-08-31
Abstract
Abstract Styrene derivatives of the formula ##STR1## and an electrophotographic photoconductor comprising an electroconductive support material and a photosensitive layer comprising at least one styrene derivatives of the same formula are disclosed, in which Ar represents an unsubstituted of substituted phenyl group or an unsubstituted or substituted styryl group, R represents hydrogen, a lower alkyl group or an unsubstituted or substituted phenyl group, and A is selected from the group consisting of ##STR2## wherein R 1 represents a lower alkyl group or a lower alkoxy group, R 2 and R 3 each represent a lower alkyl group, an aralkyl group, or an unsubstituted or substituted phenyl group.
Inventors
- 👤 Masayuki Shoshi
- 👤 Masaomi Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:40
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/30; C07D333/36; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142; G03G5/06147; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0629; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/067
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
98 words
An electrophotographic photoconductor comprising an electroconductive support material and a photosensitive layer formed thereon comprising at least one styrene derivative of the formula ##STR705## wherein Ar represents an unsubstituted or substituted phenyl group or an unsubstituted or substituted styryl group, R represents hydrogen, a lower alkyl group or an unsubstituted or substituted phenyl group, and A is selected from the group consisting of ##STR706## wherein R 1 represents a lower alkyl group or a lower alkoxy group, R 2 and R 3 each represent a lower alkyl group, an aralkyl group, or an unsubstituted or substituted phenyl group.
Claim 2
Dependent Claim
98 words
An electrophotographic photoconductor comprising an electroconductive support material and a photosensitive layer formed thereon comprising at least one styrene derivative of the formula ##STR705## wherein Ar represents an unsubstituted or substituted phenyl group or an unsubstituted or substituted styryl group, R represents hydrogen, a lower alkyl group or an unsubstituted or substituted phenyl group, and A is selected from the group consisting of ##STR706## wherein R 1 represents a lower alkyl group or a lower alkoxy group, R 2 and R 3 each represent a lower alkyl group, an aralkyl group, or an unsubstituted or substituted phenyl group.
Claim 3
Dependent Claim
40 words
An electrophotographic photoconductor as claimed in claim 1, wherein said photosensitive layer further comprises a binder agent which constitutes a charge transporting medium in combination with said styrene derivative, and a charge generating material dispersed within said charge transporting medium.
Claim 4
Dependent Claim
36 words
An electrophotographic photoconductor as claimed in claim 1, wherein said photosensitive layer comprises a charge generating layer containing a charge generating material, and a charge transporting layer containing said styrene derivative as a charge transporting material.
Claim 5
Dependent Claim
25 words
An electrophotographic photoconductor as claimed in claim 1, wherein the thickness of said photosensitive layer is in the range of 3 μm to 50 μm.
Claim 6
Dependent Claim
31 words
An electrophotographic photoconductor as claimed in claim 1, wherein the amount of said styrene derivative comprises 30 wt. % to 70 wt. % of the entire weight of said photosensitive layer.
Claim 7
Dependent Claim
25 words
An electrophotographic photoconductor as claimed in claim 2, wherein the thickness of said photosensitive layer is in the range of 3 μm to 50 μm.
Claim 8
Dependent Claim
63 words
An electrophotographic photoconductor as claimed in claim 2, wherein the amount of said styrene derivative is in the range of 10 wt. % to 95 wt. % of the entire weight of said photosensitive layer, and the amount of said charge generating material is in the range of 0.1 wt. % to 50 wt. % of the entire weight of said photosensitive layer.
Claim 9
Dependent Claim
40 words
An electrophotographic photoconductor as claimed in claim 3, wherein the thickness of said charge generating layer is not more than 5 μm and the thickness of said charge transporting layer is in the range of 3 μm to 50 μm.
Claim 10
Dependent Claim
66 words
An electrophotographic photoconductor as claimed in claim 3, wherein the amount of said charge generating material is in the range of 10 wt. % to 95 wt. % of the entire weight of said charge generating layer, and the amount of said charge transporting material is in the range of 10 wt. % to 95 wt. % of the entire weight of said charge transporting layer.
Claim 11
Dependent Claim
12 words
An electrophotographic photoconductor as claimed in claim 1, wherein A is ##STR707##
Claim 12
Dependent Claim
15 words
An electrophotographic photoconductor as claimed in claim 10, wherein the styrene derivative is 2-methyl-4-N, N-diphenylamino-β-phenylstilbene.
Claim 13
Dependent Claim
12 words
An electrophotographic photoconductor as claimed in claim 1, wherein A is ##STR708##
Claim 14
Dependent Claim
14 words
An electrophotographic photoconductor as claimed in claim 12, wherein the styrene derivative is 2-N,N-ditolylamino-5-(β-phenylstyryl)thiophene.
Claim 15
Dependent Claim
12 words
An electrophotographic photoconductor as claimed in claim 1, wherein A is ##STR709##
Claim 16
Dependent Claim
15 words
An electrophotographic photoconductor as claimed in claim 14, wherein the styrene derivative is 1-(β-phenylstyryl)-4-N, N-diphenylaminonaphthalene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |