US4184871A
Expired / Lapsed
US
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Photosensitive composition for electrophotography
Assignee: Mitsubishi Chemical Corp
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Filing: 1978-02-13
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Granted: 1980-01-22
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Expires: 1998-02-13
Abstract
Abstract A photosensitive composition which comprises an electron donative organic photoconductive compound and a sensitizer having the formula <IMAGE> wherein A represents an aromatic group or heterocyclic group which can be substituted by an inert group; R represents cyano, nitro, akoxycarbonyl, aryl or carbamoyl group; and n is 0 or 1.
Inventors
- 👤 Hiroshi Oba
- 👤 Tetsuo Murayama
- 👤 Shigenori Otsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:14
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/067
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
102 words
A photosensitive composition which consists essentially of an electron donative organic photoconductive compound and a sensitizer having the formula ##STR3## wherein A represents a phenyl, naphthyl, anthryl, acenaphthyl, furyl or thienyl group each of which may be substituted by a group selected from the group consisting of chloro, bromo, alkoxy, nitro, cyano and alkoxycarbonyl; R represents a cyano, nitro, alkoxycarbonyl, aryl or carbamoyl group; and n is 0 or 1; wherein said composition is characterized in that its action spectrum extends to substantially longer wave lengths than the absorption spectrum of either said electron donative photoconductive compound alone or said sensitizer alone.
Claim 2
Dependent Claim
102 words
A photosensitive composition which consists essentially of an electron donative organic photoconductive compound and a sensitizer having the formula ##STR3## wherein A represents a phenyl, naphthyl, anthryl, acenaphthyl, furyl or thienyl group each of which may be substituted by a group selected from the group consisting of chloro, bromo, alkoxy, nitro, cyano and alkoxycarbonyl; R represents a cyano, nitro, alkoxycarbonyl, aryl or carbamoyl group; and n is 0 or 1; wherein said composition is characterized in that its action spectrum extends to substantially longer wave lengths than the absorption spectrum of either said electron donative photoconductive compound alone or said sensitizer alone.
Claim 3
Dependent Claim
41 words
The photosensitive composition of claim 1, wherein said electron donative organic photoconductive compound is a photoconductive compound selected from the group consisting of aromatic hydrocarbons, heterocyclic compounds and polymers and copolymers having a monomer unit derived from either of the same.
Claim 4
Dependent Claim
22 words
The photosensitive composition of claim 1, wherein the quantity of said sensitizer is 0.1-100 mole % relative to said organic photoconductive compound.
Claim 5
Dependent Claim
15 words
The photosensitive composition of claim 1, wherein said electron donative organic photoconductive compound is polyvinylcarbazole.
Claim 6
Dependent Claim
15 words
The photosensitive composition of claim 1, wherein said electron donative organic photoconductive compound is polyglycidylcarbazole.
Claim 7
Dependent Claim
25 words
The photosensitive composition of claim 1, wherein said electron donative organic photoconductive compound is a polymer prepared by partially substituting the chlorine atoms of polyepichlorohydrin.
Claim 8
Dependent Claim
18 words
The photosensitive composition of claim 1, wherein the concentration of said organic photoconductive compound is 1-80 wt. %.
Claim 9
Dependent Claim
43 words
The photosensitive composition of claim 1, wherein said action spectrum extends to 600 nm. in the visible region, and said absorption spectrum of said electron donative organic photoconductive compound and of said sensitizer shows negligible absorption above 450 nm. in the visible region.
Claim 10
Independent Claim
91 words
A method of sensitizing to visible light an electron-donative organic photoconductive compound which alone is substantially insensitive to visible light which consists of adding to said photoconductive compound an amount effective to sensitize said photoconductive compound of a compound having the formula ##STR4## wherein A represents a phenyl, naphthyl, anthryl, acenaphthyl, furyl or thienyl group which may be substituted by a group selected from the group consisting of chloro, bromo, alkoxy, nitro, cyano, and alkoxycarbonyl; R represents a cyano, nitro, alkoxycarbonyl, aryl or carbamoyl group; and n is 0 or 1.
Claim 11
Independent Claim
91 words
A method of sensitizing to visible light an electron-donative organic photoconductive compound which alone is substantially insensitive to visible light which consists of adding to said photoconductive compound an amount effective to sensitize said photoconductive compound of a compound having the formula ##STR4## wherein A represents a phenyl, naphthyl, anthryl, acenaphthyl, furyl or thienyl group which may be substituted by a group selected from the group consisting of chloro, bromo, alkoxy, nitro, cyano, and alkoxycarbonyl; R represents a cyano, nitro, alkoxycarbonyl, aryl or carbamoyl group; and n is 0 or 1.
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) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |