US3652269A
Expired / Lapsed
US
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Photoconductive elements containing halogenated polyethylene binders
Assignee: Eastman Kodak Co
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Filing: 1968-08-27
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Granted: 1972-03-28
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Expires: 1988-08-27
Abstract
Abstract Photoconductive elements containing a photoconductor and a binder comprising polymers of halogenated polyethylenes are described. These elements can be sensitized and charged either negatively or positively.
Inventors
- 👤 Lawrence E Contois
- 👤 Stewart H Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:22
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0635; G03G5/0637; G03G5/05; G03G5/0528; G03G5/0532; G03G5/0539; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142; G03G5/06147
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
11 words
The element of claim 1 wherein the binder is chlorinated polyethylene.
Claim 2
Dependent Claim
26 words
The electrophotographic element of claim 1 wherein the photoconductive composition contains a sensitizer selected from the group consisting of carbocyanine, pyrylium, thiapyrylium and selenapyrylium dye salts.
Claim 3
Dependent Claim
30 words
An electrophotographic element comprising a support having coated thereon a photoconductive composition comprising a non-polymeric organic photocondUctor and a halogenated polyethylene binder containing 50 to 70 percent by weight halogen.
Claim 4
Dependent Claim
11 words
The element of claim 4 wherein the binder is chlorinated polyethylene.
Claim 5
Dependent Claim
32 words
An electrophotographic element comprising a support having coated thereon a photoconductive composition comprising a non-polymeric organic photoconductor, a sensitizer and a halogenated polyethylene binder containing 50 to 70 percent by weight halogen.
Claim 6
Dependent Claim
28 words
The electrophotographic element of claim 6 wherein the photoconductor is selected from the group consisting of polyaryl alkanes having at least one amino aryl group and 4-diarylamino-substituted chalcones.
Claim 7
Dependent Claim
23 words
The electrophotographic element of claim 6 wherein the sensitizer is selected from the group consisting of carbocyanine, pyrylium, thiapyrylium and selenapyrylium dye salts.
Claim 8
Dependent Claim
12 words
The electrophotographic element of claim 6 wherein the binder is chlorinated polyethylene.
Claim 9
Dependent Claim
48 words
An electrophotographic element comprising a support having coated thereon a photoconductive composition comprising 10 to about 60 weight percent of 4,4''-benzylidine-bis(N,N-diethyl-m-toluidine) as an organic photoconductor, 0.005 to about 5.0 weight percent 2,4-(4-ethoxyphenyl)-6-(4-n-amyloxystyryl)pyrylium fluoroborate as a sensitizer and chlorinated polyethylene containing 50 to 70 percent by weight of chlorine.
Claim 10
Dependent Claim
50 words
An electrophotographic element comprising a support having coated thereon a photoconductive composition comprising 10 to about 60 weight percent of 4,4''-bis(diphenyl-amino) chalcone as an organic photoconductor, 0.005 to about 5.0 weight percent 2,4-(4-ethoxyphenyl)-6-(4)n-amyloxystyryl) pyrylium fluoroborate as a sensitizer and chlorinated polyethylene containing 50 to 70 percent by weight of chlorine.
Claim 11
Dependent Claim
54 words
An electrophotographic element comprising a support having coated thereon a photoconductive composition comprising 10 to about 60 weight percent of 4,4''-bis(di-phenylamino)chalcone as an organic photoconductor, 0.005 to about 5.0 weight percent 6-chloro-1''-methyl-1,2'',3''-triphenylimidazo (4,5-b) quinoxalino-3''-indolocarbocyanine p-toluene sulfonate as a sensitizer and chlorinated polyethylene containing 50 to 70 percent by weight of chlorine as a binder.
Claim 12
Dependent Claim
64 words
A process for producing a visible image comprising the steps of preparing an electrophotographic element by coating a photoconductive composition containing a non-polymeric polymeric organic photoconductor and a halogenated polyethylene binder having at least 50 percent by weight of halogen on a support, exposing the element in an imagewise manner to produce a latent image and developing the element to produce a visible image.
Claim 13
Dependent Claim
17 words
The process of claim 13 wherein the binder contains 50 to 70 percent by weight of halogen.
Claim 14
Dependent Claim
11 words
The process of claim 13 wherein the binder is chlorinated polyethylene.
Claim 15
Dependent Claim
104 words
A process for producing a visible image comprising the steps of a. mixing at room temperature a non-polymeric organic photoconductor, a solvent, a sensitizer for said photoconductor and a halogenated polyethylene binder, having at least 50 percent by weight of halogen, b. coating said mixture on a support to form an electrophotographic element, c. drying said element at a temperature of less than 35* C, d. charging said element to at least 550 volts, e. exposing said element in an imagewise manner to a pattern of actinic radiation to form a latent image and f. developing said latent image to form a visible image.
Claim 16
Dependent Claim
13 words
The process of claim 16 wherein the binder is chlorinated polyethylene. 50% halogen
Claim 17
Dependent Claim
21 words
The process of claim 16 wherein the binder is a halogenated polyethylene containing 50 to 70 percent by weight of halogen.
Claim 18
Dependent Claim
20 words
The pRocess of claim 16 wherein the binder is chlorinated polyethylene containing 50 to 70 percent by weight of chlorine.
Claim 19
Dependent Claim
11 words
The process of claim 16 wherein the solvent is methylene chloride.
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) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |