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US4642280A
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Electrophotographic photoreceptors containing hydrazone compounds as charge-transfer agents
Assignee: Minolta Co Ltd
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Filing: 1985-05-29
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Granted: 1987-02-10
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Expires: 2005-05-29
Abstract
Abstract A hydrazone compound useful in phthalocyanine photoreceptors to provide them with excellent sensitivity and repeat stability and low residual voltage invention has the following formula: <IMAGE> [I] wherein X and Y independently represent a hydrogen atom, a lower alkyl, methoxy or ethoxy group, Z represents a lower alkyl, benzyl, hydroxyl, lower alkoxy, phenoxy or benzyloxy group, Z' represents a hydrogen atom, an alkyl group or an alkoxy group, and R represents a lower alkyl group, an aryl group which may have a substituent, or a benzyl group.
Inventors
- 👤 Hideaki Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:50
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0616; G03G5/0614; G03G5/06142
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
An electrophotographic photoreceptor which includes a photosensitive layer that comprises a phthalocyanine photoconductive powder and a hydrazone compound represented by the general formula (I) in the photosensitive layer: ##STR13## wherein X and Y independently represent a hydrogen atom or a lower alkyl, methoxy or ethoxy group, Z represents a lower alkyl, benzyl, hydroxyl, lower alkoxy, phenoxy or benzyloxy group, Z' represents a hydrogen atom or an alkyl or alkoxy group, and R represents a methyl, phenyl, benzyl or methoxyphenyl group.
Claim 2
Dependent Claim
80 words
An electrophotographic photoreceptor which includes a photosensitive layer that comprises a phthalocyanine photoconductive powder and a hydrazone compound represented by the general formula (I) in the photosensitive layer: ##STR13## wherein X and Y independently represent a hydrogen atom or a lower alkyl, methoxy or ethoxy group, Z represents a lower alkyl, benzyl, hydroxyl, lower alkoxy, phenoxy or benzyloxy group, Z' represents a hydrogen atom or an alkyl or alkoxy group, and R represents a methyl, phenyl, benzyl or methoxyphenyl group.
Claim 3
Dependent Claim
11 words
The electrophotographic photoreceptor of claim 1, wherein hydrazone compound is: ##STR14##
Claim 4
Dependent Claim
11 words
The electrophotographic photoreceptor of claim 1, wherein hydrazone compound is: ##STR15##
Claim 5
Dependent Claim
11 words
The electrophotographic photoreceptor of claim 1, wherein hydrazone compound is: ##STR16##
Claim 6
Dependent Claim
11 words
The electrophotographic photoreceptor of claim 1, wherein hydrazone compound is: ##STR17##
Claim 7
Dependent Claim
11 words
The electrophotographic photoreceptor of claim 1, wherein hydrazone compound is: ##STR18##
Claim 8
Dependent Claim
74 words
An electrophotographic photoreceptor which includes a photosensitive layer that comprises a phthalocyanine photoconductive powder and a hydrazone compound represented by the general formula (I) in the photosensitive layer: ##STR19## wherein X and Y independently represent a hydrogen atom or a methyl, ethyl, n-propyl or methoxy group; Z represents a methyl, methoxy, ethoxy, or benzyloxy group; Z' represents a hydrogen atom or a methyl group; and R represents a methyl, phenyl, benzyl or methoxyphenyl group.
Claim 9
Dependent Claim
74 words
An electrophotographic photoreceptor which includes a photosensitive layer that comprises a phthalocyanine photoconductive powder and a hydrazone compound represented by the general formula (I) in the photosensitive layer: ##STR19## wherein X and Y independently represent a hydrogen atom or a methyl, ethyl, n-propyl or methoxy group; Z represents a methyl, methoxy, ethoxy, or benzyloxy group; Z' represents a hydrogen atom or a methyl group; and R represents a methyl, phenyl, benzyl or methoxyphenyl group.
References Cited (Backward Citations)
US4423129A
Cited
US4362798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |