US4018606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic azo pigment sensitizers for photoconductive layers
Assignee: Eastman Kodak Co
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Filing: 1974-05-03
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Granted: 1977-04-19
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Expires: 1994-05-03
Abstract
Abstract A class of organic pigments having the formula ##STR1## wherein X consists of the atoms necessary to complete a naphthalene, anthracene, or ##STR2## ring; R 1 , R 2 , and R 3 are hydrogen, halogen, alkoxy, NO 2 , alkyl, SO 3 H or alkali metal salts thereof, ##STR3## and COOH or alkali metal salts thereof, and R 2 and R 3 can comprise the atoms necessary to complete a phenyl, naphthyl or anthryl ring; and R is selected from the group consisting of ##STR4## where M is alkyl, alkali or alkaline earth metal are useful as sensitizers for photoconductive compositions in electrophotographic processes.
Inventors
- 👤 Lawrence E. Contois
- 👤 Joseph Y. Kaukeinen
- 👤 Stephen Michel
- 👤 Thomas M. Plutchak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:24
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0675; G03G5/0677; C; C09; C09B; C09B29/00; C09B29/0003; C09B29/0007; C09B29/10; C09B29/34; C09B29/36; C09B29/3604; C09B29/3647; C09B29/3652; C09B29/366
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
122 words
A photoconductive composition comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR31## wherein X consists of the atoms necessary to complete a naphthalene, anthracene, or ##STR32## ring; R 1 , R 2 , and R 3 are independently selected from the group consisting of hydrogen, halogen, alkoxy, NO 2 , alkyl, SO 3 H or alkali metal salts thereof, and COOH or alkali metal salts thereof; ##STR33## and wherein R 2 and R 3 can comprise the atoms necessary to complete a phenyl, naphthyl or anthryl ring; and R is selected from the group consisting of ##STR34## or COOM wherein M is alkyl or an alkali or alkaline earth metal.
Claim 2
Dependent Claim
122 words
A photoconductive composition comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR31## wherein X consists of the atoms necessary to complete a naphthalene, anthracene, or ##STR32## ring; R 1 , R 2 , and R 3 are independently selected from the group consisting of hydrogen, halogen, alkoxy, NO 2 , alkyl, SO 3 H or alkali metal salts thereof, and COOH or alkali metal salts thereof; ##STR33## and wherein R 2 and R 3 can comprise the atoms necessary to complete a phenyl, naphthyl or anthryl ring; and R is selected from the group consisting of ##STR34## or COOM wherein M is alkyl or an alkali or alkaline earth metal.
Claim 3
Dependent Claim
12 words
The photoconductive composition of claim 1 containing an electrically insulating polymeric binder.
Claim 4
Dependent Claim
24 words
A photoconductive composition comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR35##
Claim 5
Dependent Claim
24 words
A photoconductive composition comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR35##
Claim 6
Dependent Claim
24 words
A photoconductive composition comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR36##
Claim 7
Dependent Claim
24 words
A photoconductive composition comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR36##
Claim 8
Dependent Claim
24 words
A photoconductive composition comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR37##
Claim 9
Dependent Claim
24 words
A photoconductive composition comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR37##
Claim 10
Dependent Claim
13 words
The photoconductive composition of claim 1 wherein the photoconductor is an organic photoconductor.
Claim 11
Dependent Claim
22 words
The photoconductive composition of claim 6 wherein the photoconductor is selected from the group consisting of arylamines, arylalkanes, organometallics and polymeric photoconductors.
Claim 12
Dependent Claim
13 words
The photoconductive composition of claim 1 wherein the photoconductor is an inorganic photoconductor.
Claim 13
Dependent Claim
29 words
The photoconductive composition of claim 8 wherein the inorganic photoconductor is selected from the group consisting of selenium, zinc oxide, titanium oxide, cadmium sulfide, cadmium selenide and lead oxide.
Claim 14
Dependent Claim
132 words
An electrophotographic element comprising a conductive support having coated thereon a photoconductive composition comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR38## wherein X consists of the atoms necessary to complete a naphthalene, anthracene, or ##STR39## ring; R 1 , R 2 , and R 3 are independently selected from the group consisting of hydrogen, halogen, alkoxy, NO 2 , alkyl, SO 3 H or alkali metal salts thereof, and COOH or alkali metal salts thereof; ##STR40## and wherein R 2 and R 3 can comprise the atoms necessary to complete a phenyl, naphthyl or anthryl ring; and R is selected from the group consisting of ##STR41## or COOM wherein M is alkyl or an alkali or alkaline earth metal.
Claim 15
Dependent Claim
132 words
An electrophotographic element comprising a conductive support having coated thereon a photoconductive composition comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR38## wherein X consists of the atoms necessary to complete a naphthalene, anthracene, or ##STR39## ring; R 1 , R 2 , and R 3 are independently selected from the group consisting of hydrogen, halogen, alkoxy, NO 2 , alkyl, SO 3 H or alkali metal salts thereof, and COOH or alkali metal salts thereof; ##STR40## and wherein R 2 and R 3 can comprise the atoms necessary to complete a phenyl, naphthyl or anthryl ring; and R is selected from the group consisting of ##STR41## or COOM wherein M is alkyl or an alkali or alkaline earth metal.
Claim 16
Dependent Claim
17 words
The electrophotographic element of claim 10 wherein the photoconductor is dispersed in an electrically insulating polymeric binder.
Claim 17
Dependent Claim
14 words
The electrophotographic element of claim 10 wherein the organic pigment has the formula ##STR42##
Claim 18
Dependent Claim
14 words
The electrophotographic element of claim 10 wherein the organic pigment has the formula ##STR43##
Claim 19
Dependent Claim
14 words
The electrophotographic element of claim 10 wherein the organic pigment has the formula ##STR44##
Claim 20
Dependent Claim
13 words
The electrophotographic element of claim 10 wherein the photoconductor is an organic photoconductor.
Claim 21
Dependent Claim
23 words
The electrophotographic element of claim 15 wherein the organic photoconductor is selected from the group consisting of arylamines, arylalkanes, organometallics and polymeric photoconductors.
Claim 22
Dependent Claim
13 words
The electrophotographic element of claim 10 wherein the photoconductor is an inorganic photoconductor.
Claim 23
Dependent Claim
29 words
The electrophotographic element of claim 17 wherein the inorganic photoconductor is selected from the group consisting of selenium, zinc oxide, titanium oxide, cadmium sulfide, cadmium selenide and lead oxide.
Claim 24
Dependent Claim
146 words
In an electrophotographic process wherein an electrostatic charge pattern is formed on an electrophotographic element the improvement characterized in that said electrophotographic element has a photoconductive layer comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR45## wherein X consists of the atoms necessary to complete a naphthalene, anthracene, or ##STR46## ring; R 1 , R 2 , and R 3 are independently selected from the group consisting of hydrogen, halogen, alkoxy, NO 2 , alkyl, SO 3 H or alkali metal salts thereof; and COOH or alkali metal salts thereof; ##STR47## and wherein R 2 and R 3 can comprise the atoms necessary to complete a phenyl, naphthyl or anthryl ring; and R is selected from the group consisting of ##STR48## or COOM wherein M is alkyl or an alkali or alkaline earth metal.
Claim 25
Dependent Claim
146 words
In an electrophotographic process wherein an electrostatic charge pattern is formed on an electrophotographic element the improvement characterized in that said electrophotographic element has a photoconductive layer comprising a photoconductor and a sensitizing amount of a sensitizer for the photoconductor comprising an organic pigment having the formula ##STR45## wherein X consists of the atoms necessary to complete a naphthalene, anthracene, or ##STR46## ring; R 1 , R 2 , and R 3 are independently selected from the group consisting of hydrogen, halogen, alkoxy, NO 2 , alkyl, SO 3 H or alkali metal salts thereof; and COOH or alkali metal salts thereof; ##STR47## and wherein R 2 and R 3 can comprise the atoms necessary to complete a phenyl, naphthyl or anthryl ring; and R is selected from the group consisting of ##STR48## or COOM wherein M is alkyl or an alkali or alkaline earth metal.
Claim 26
Dependent Claim
17 words
The electrophotographic process of claim 19 wherein the photoconductor is dispersed in an electrically insulating polymeric binder.
Claim 27
Dependent Claim
14 words
The electrophotographic process of claim 19 wherein the organic pigment has the formula ##STR49##
Claim 28
Dependent Claim
14 words
The electrophotographic process of claim 19 wherein the organic pigment has the formula ##STR50##
Claim 29
Dependent Claim
14 words
The electrophotographic process of claim 19 wherein the organic pigment has the formula ##STR51##
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) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |