US3873312A
Expired / Lapsed
US
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Photoconductive composition and elements containing a styryl amino group containing photoconductor
Assignee: Eastman Kodak Co
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Filing: 1974-02-19
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Granted: 1975-03-25
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Expires: 1994-02-19
Abstract
Abstract A novel photoconductive composition and electrophotographic elements containing the same are prepared using as a photoconductor a compound having a central carbocyclic or sulfur heterocyclic divalent aromatic ring joined to two aminosubstituted styryl radicals through the vinylene groups of the styryl radicals.
Inventors
- 👤 Lawrence E Contois
- 👤 Louis J Rossi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:07
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/087; G03G5/06; G03G5/0664; G03G5/0666; G03G5/0672; G03G5/0674; G03G5/07; G03G5/09
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
19 words
A PHOTOCONDUCTIVE COMPOSITION COMPRISING AN ELECTRICALLY INSULATING POLYMERIC BINDER AND AS A PHOTOCONDUCTOR AN ORGANIC COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
19 words
A PHOTOCONDUCTIVE COMPOSITION COMPRISING AN ELECTRICALLY INSULATING POLYMERIC BINDER AND AS A PHOTOCONDUCTOR AN ORGANIC COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
16 words
A photoconductive composition as described in claim 1 wherein said composition contains an inorganic photoconductive compound.
Claim 4
Dependent Claim
28 words
A photoconductive composition comprising an electrically insulating binder, an organic photoconductive compound, and an amount of sensitizer effective to sensitize said composition, said photoconductive compound having the formula
Claim 5
Dependent Claim
28 words
A photoconductive composition comprising an electrically insulating binder, an organic photoconductive compound, and an amount of sensitizer effective to sensitize said composition, said photoconductive compound having the formula
Claim 6
Dependent Claim
40 words
A photoconductive composition as described in claim 3 wherein R1, R2, R3, and R4 are each aryl radicals and Ar2 is a phenyl radical or an alkyl-substituted phenyl radical containing 1 to about 4 carbon atoms in said alkyl substituents,
Claim 7
Dependent Claim
33 words
A photoconductive composition as described in claim 3 wherein said photoconductor is selected from the group consisting of 4-diphenylamino-4''-(4-diphenylamino)styryl)stilbene; 4-di-(p-tolylamino-4''-(4-(4-(di-p-tolylamino)styryl)stilbene; 4-di-(p-tolylamino)-2'' ,3'' ,5'' ,6''-tetramethyl-4''-(4-(di-p-tolylamino)styryl) stilbene; 4-di-(p-tolylamino)-2''-(4-(di-p-tolylamino)styryl) stilbene; 4-di-(p-tolylamino)-2'' ,4''-dimethyl-5''-(4-(di-p-tolylamino)styryl) stilbene; 9,10-bis(4-(di-p-tolylamino)styryl)-anthracene; and 1,4-bis(4-N-ethyl-N-p-tolylaminostyryl)benzene.
Claim 8
Dependent Claim
15 words
A photoconductive cOmposition as described in claim 3 wherein said composition contains photoconductive lead oxide.
Claim 9
Dependent Claim
77 words
An aggregate photoconductive composition comprising a continuous binder phase containing (a) dissolved therein greater than about 15 percent by weight of one or more organic photoconductors and (b) dispersed therein a particulate co-crystalline complex of (1) a dye selected from the group consisting of a 2,4,6-substituted pyrylium dye salt and a 2,4,6-substituted thiapyrylium dye salt and (2) a carbonate polymer having an alkylidene diarylene moiety in a recurring unit, each of said organic photoconductors having the formula
Claim 10
Dependent Claim
77 words
An aggregate photoconductive composition comprising a continuous binder phase containing (a) dissolved therein greater than about 15 percent by weight of one or more organic photoconductors and (b) dispersed therein a particulate co-crystalline complex of (1) a dye selected from the group consisting of a 2,4,6-substituted pyrylium dye salt and a 2,4,6-substituted thiapyrylium dye salt and (2) a carbonate polymer having an alkylidene diarylene moiety in a recurring unit, each of said organic photoconductors having the formula
Claim 11
Dependent Claim
43 words
An aggregate photoconductive composition as described in claim 7 wherein R1, R2, R3, and R4 are each phenyl radicals or alkyl-substituted phenyl radicals and Ar2 is a phenyl radical or an alkyl-substituted phenyl radical, said alkyl substituents having 1 or 2 carbon atoms.
Claim 12
Dependent Claim
31 words
An aggregate photoconductive composition as described in claim 7 wherein said organic photoconductor is selected from the group consisting of 4-diphenylamino-4''-(4-diphenylamino)styryl)stilbene; 4-di-(p-tolylamino)-4''-(4-(di-p-tolylamino)styryl)stilbene; 4-di-(p-tolylamino)-2'',3'' ,5'' ,6''-tetramethyl-4''-(4-(di-p-tolylamino)styryl)stilbene; 4-di-(p-tolylamino)-2''-(4-(di-p-tolylamino)styryl)stilbene; 4-di-(p-tolylamino)-2'' ,4''-dimethyl-5''-(4-(di-p-tolylamino)styryl) stilbene; and 1,4-bis(4-N-ethyl-N-p-tolylaminostyryl)benzene.
Claim 13
Dependent Claim
29 words
In an electrophotographic element comprising a conductive support and a photoconductive layer coated over said support, the improvement wherein said photoconductive layer comprises the photoconductive composition of claim 2.
Claim 14
Dependent Claim
29 words
In an electrophotographic element comprising a conductive support and a photoconductive layer coated over said support, the improvement wherein said photoconductive layer comprises the photoconductive composition of claim 6.
Claim 15
Dependent Claim
42 words
In an electrophotographic process wherein an electrostatic charge pattern is formed on a photoconductive element comprised of an electrically conducting support having coated thereover a layer of a photoconductive composition, the improvement wherein said photoconductive composition is as described in claim 2.
Claim 16
Dependent Claim
72 words
An aggregate photoconductive composition comprising a continuous binder phase containing (a) dissolved therein greater than about 15% by weight of one or more organic photoconductors and (b) dispersed therein a particulate co-crystalline complex of (1) a dye selected from the group consisting of thiapyrylium, selena pyrylium, and pyrylium dye salts and (2) a carbonate polymer having an alkylidene diarylene moiety in a recurring unit, each of said organic photoconductors having the formula
Claim 17
Dependent Claim
72 words
An aggregate photoconductive composition comprising a continuous binder phase containing (a) dissolved therein greater than about 15% by weight of one or more organic photoconductors and (b) dispersed therein a particulate co-crystalline complex of (1) a dye selected from the group consisting of thiapyrylium, selena pyrylium, and pyrylium dye salts and (2) a carbonate polymer having an alkylidene diarylene moiety in a recurring unit, each of said organic photoconductors having the formula
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |