US3770428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
PHOTOCONDUCTIVE REACTION PRODUCT OF N -beta- CHLORETHYL CARBAZOLE AND FORMALDEHYDE
Assignee: Xerox Corp
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Filing: 1971-08-23
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Granted: 1973-11-06
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Expires: 1991-08-23
Abstract
Abstract AND AN ELECTROPHOTOGRAPHIC PROCESS EMPLOYING THE SAME. A xerographic plate including a resinous organic photoconductive composition obtained from the reaction between n-beta-chloroethyl carbazole and formaldehyde satisfying the formula:
Inventors
- 👤 S Watarai
- 👤 H Ono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:32
CPC Classifications
C; C09; C09D; C09D161/00; C09D161/04; C09D161/06; C08; C08G; C08G16/00; C08G16/02; C08G16/025; C08G16/0268; C08G16/0275; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/124; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/075; G03G5/076; G03G5/0763
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
12 words
An electrophotographic member is defined in claim 1 further comprising a sensitizer.
Claim 2
Dependent Claim
12 words
The electrophotographic member as defined in claim 1 further comprising a plasticizer.
Claim 3
Dependent Claim
14 words
An electrophotographic member as defined in claim 1 further comprising an insulating binder resin.
Claim 4
Dependent Claim
26 words
An electrophotographic member comprising a conductive support substrate and superimposed thereon an organic photoconductive film said film comprising a solid organic photoconductive composition satisfying the formula:
Claim 5
Dependent Claim
12 words
The electrophotographic member as defined in claim 5 further comprising a sensitizer.
Claim 6
Dependent Claim
12 words
The electrophotographic member as defined in claim 5 further comprising a plasticizer.
Claim 7
Dependent Claim
14 words
The electrophotographic member as defined in claim 5 further comprising an insulating binder resin.
Claim 8
Dependent Claim
35 words
An electrophotographic imaging process comprising a. providing an electrophotographic member, said member comprising a conductive support substrate having superimposed thereover an organic photoconductive film said film comprising a solid organic photoconductive composition satisfying the formula:
Claim 9
Dependent Claim
22 words
The imaging process of claim 9, wherein the latent electrostatic image is rendered visible by development with finely divided electroscopic marking material.
Claim 10
Dependent Claim
36 words
An electrophotographic process as defined in claim 5 wherein said electrophotographic member is sensitized said sensitizer being selected from the group consisting of tetracyanoethylene, tetracyanoquinodimethane, chloranil, bromanil, alpha-naphthoquinone, anthraquinone, methylene blue, crystal violet, and malachite green.
Claim 11
Dependent Claim
31 words
The process as defined in claim 5 wherein said electrophotographic composition further comprises a plasticizer said plasticizer being selected from the group consisting of chlorinated paraffin, phosphate plasticizers and phthalate plasticizers.
Claim 12
Dependent Claim
14 words
The process as defined in claim 5 wherein said electrophotographic member is cascade developed.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |