Patent US4983480A successfully refreshed from Google Patents.
US4983480A
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Photosensitive member comprising an azo compound
Assignee: Minolta Co Ltd
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Filing: 1988-12-28
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Granted: 1991-01-08
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Expires: 2008-12-28
Abstract
Abstract The present invention relates to a photosensitive member containing a specific azo compound for a charge generating material represented by the following general formula (I); ##STR1## wherein A represents an aromatic hydrocarbon group or a heterocyclic group, which may be bonded through a bonding group; R 1 and R 2 are independently selected from the group consisting of hydrogen, a halogen atom, an alkyl group which may have a substitutent, an aralkyl group which may have a substitutent, an aryl group which may have a substituent, a condensed poly-cyclic group which may have a substitutent and a hetero-cyclic group which may have a substitutent; R 1 and R 2 may combinedly form a cyclic ring; and n represents an integer of 1, 2, 3, or 4, which is improved in photosensitive properties, in particular, sensitivity.
Inventors
- 👤 Hideaki Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:04
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0675; G03G5/0694; C; C09; C09B; C09B35/00; C09B35/02; C09B35/021; C09B35/023; C09B35/03; C09B35/039; C09B35/50; C09B35/56; C09B56/00; G03G5/0677; G03G5/0679; G03G5/0681; G03G5/0687; G03G5/0688
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
116 words
A photosensitive member with a photosensitive layer comprising an azo compound as a charge generating material represented by the following formula (I) on or over an electrically conductive substrate; ##STR14## wherein A represents an aromatic hydrocarbon group or a heterocyclic group, which may be bonded through a bonding group; at least one of R 1 and R 2 is a cyclic group selected from the group consisting of an aryl group which may have a substituent, a condensed polycyclic group which may have a substituent and a heterocyclic group which may have a substituent; or R 1 and R 2 combinedly form a cyclic ring; and n represents an integer of 1, 2, 3 or 4.
Claim 2
Dependent Claim
116 words
A photosensitive member with a photosensitive layer comprising an azo compound as a charge generating material represented by the following formula (I) on or over an electrically conductive substrate; ##STR14## wherein A represents an aromatic hydrocarbon group or a heterocyclic group, which may be bonded through a bonding group; at least one of R 1 and R 2 is a cyclic group selected from the group consisting of an aryl group which may have a substituent, a condensed polycyclic group which may have a substituent and a heterocyclic group which may have a substituent; or R 1 and R 2 combinedly form a cyclic ring; and n represents an integer of 1, 2, 3 or 4.
Claim 3
Dependent Claim
122 words
A photosensitive member comprising a charge generating layer and a charge transporting layer on or over an electrically conductive substrate, wherein the charge generating layer comprises an azo compound represented by the following formula (I); ##STR15## wherein A represents an aromatic hydrocarbon group or a heterocyclic group, which may be bonded through a bonding group; at least one of R 1 and R 2 is a cyclic group selected from the group consisting of an aryl group which may have a substituent, a condensed polycyclic group which may have a substituent and a heterocyclic group which may have a substituent; or R 1 and R 2 combinedly form a cyclic ring; and n represents an integer of 1, 2, 3 or 4.
Claim 4
Dependent Claim
122 words
A photosensitive member comprising a charge generating layer and a charge transporting layer on or over an electrically conductive substrate, wherein the charge generating layer comprises an azo compound represented by the following formula (I); ##STR15## wherein A represents an aromatic hydrocarbon group or a heterocyclic group, which may be bonded through a bonding group; at least one of R 1 and R 2 is a cyclic group selected from the group consisting of an aryl group which may have a substituent, a condensed polycyclic group which may have a substituent and a heterocyclic group which may have a substituent; or R 1 and R 2 combinedly form a cyclic ring; and n represents an integer of 1, 2, 3 or 4.
Claim 5
Dependent Claim
19 words
A photosensitive member of claim 2, wherein the thickness of the charge generating layer is 4 μm or less.
Claim 6
Dependent Claim
24 words
A photosensitive member of claim 2, wherein the thickness of the charge transporting layer is within the range of between 3 and 30 μm
Claim 7
Dependent Claim
21 words
A photosensitive member of claim 2, wherein the charge transporting layer contains a charge transporting material dispersed in a binder resin.
Claim 8
Dependent Claim
30 words
A photosensitive member of claim 5, wherein the charge transporting material is contained at 0.2-2 parts by weight on the basis of one part by weight of the binder resin.
Claim 9
Dependent Claim
16 words
A photosensitive layer of claim 2, further comprising an undercoat layer on the electrically conductive substrate.
Claim 10
Dependent Claim
133 words
A photosensitive member with a photosensitive layer formed by dispersing a charge generating material and a charge transporting material in a binder resin on or over an electrically conductive substrate, wherein the charge generating material is an azo compound represented by the following general formula (I); ##STR16## wherein A represents an aromatic hydrocarbon group or a heterocyclic group, which may be bonded through a bonding group; at least one of R 1 and R 2 is a cyclic group selected from the group consisting of an aryl group which may have a substituent, a condensed polycyclic group which may have a substituent and a heterocyclic group which may have a substituent; or R 1 and R 2 combinedly form a cyclic ring; and n represents an integer of 1, 2, 3 or 4.
Claim 11
Dependent Claim
133 words
A photosensitive member with a photosensitive layer formed by dispersing a charge generating material and a charge transporting material in a binder resin on or over an electrically conductive substrate, wherein the charge generating material is an azo compound represented by the following general formula (I); ##STR16## wherein A represents an aromatic hydrocarbon group or a heterocyclic group, which may be bonded through a bonding group; at least one of R 1 and R 2 is a cyclic group selected from the group consisting of an aryl group which may have a substituent, a condensed polycyclic group which may have a substituent and a heterocyclic group which may have a substituent; or R 1 and R 2 combinedly form a cyclic ring; and n represents an integer of 1, 2, 3 or 4.
Claim 12
Dependent Claim
23 words
A photosensitive member of claim 8, wherein the thickness of the photosensitive layer is within the range of between 3 and 30 μm.
Claim 13
Dependent Claim
29 words
A photosensitive member of claim 8, wherein the azo compound is contained at 0.01-2 parts by weight on the basis of one part by weight of the binder resin.
Claim 14
Dependent Claim
16 words
A photosensitive layer of claim 8, further comprising an undercoat layer on the electrically conductive substrate.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-07 | 2002-07-09 | 2003-01-08 | $7700.00 | Window Closed / Lapsed |