Patent US4050934A successfully refreshed from Google Patents.
US4050934A
Expired / Lapsed
US
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Electron acceptor monomers and polymers
Assignee: Xerox Corp
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Filing: 1975-09-22
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Granted: 1977-09-27
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Expires: 1995-09-22
Abstract
Abstract Disclosed are electron acceptor monomers of the formula: ##STR1## R' is hydrogen or methyl; X and Y are independently selected from the group consisting of --NO 2 , halogen, cyano and --CF 3 ; Z is oxygen or dicyanomethylene; and a and b can range from 0 to 3; With the proviso that at least one of R is ##STR2## AND POLYMERS PREPARED THEREFROM. These monomers and polymers are suitable for use in electrophotographic devices and methods.
Inventors
- 👤 Sam R. Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:32
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0609; C; C07; C07C; C07C205/00; C07C205/49; C07C205/57; C07C205/61; C07C65/00; C07C65/32; C07C65/34; C07C65/36; G03G5/0618; G03G5/07; G03G5/071; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
67 words
An electrophotographic imaging member having a photoconductive insulating layer comprising a monomer of the formula ##STR5## R' is hydrogen or methyl; X and Y are independently selected from the group consisting of --NO 2 , halogen, cyano and --CF 3 ; Z is oxygen or dicyanomethylene; and a and b can range from 0 to 3; with the proviso that at least one of R is ##STR6##
Claim 2
Dependent Claim
67 words
An electrophotographic imaging member having a photoconductive insulating layer comprising a monomer of the formula ##STR5## R' is hydrogen or methyl; X and Y are independently selected from the group consisting of --NO 2 , halogen, cyano and --CF 3 ; Z is oxygen or dicyanomethylene; and a and b can range from 0 to 3; with the proviso that at least one of R is ##STR6##
Claim 3
Dependent Claim
76 words
An electrophotographic imaging member having a photoconductive insulating layer comprising the product of the addition polymerization of at least one monomer of the formula ##STR7## R' is hydrogen or methyl; X and Y are independently selected from the group consisting of --NO 2 , halogen, cyano and --CF 3 ; Z is oxygen or dicyanomethylene, and a and b can range from 0 to 3; with the proviso that at least one of R is ##STR8##
Claim 4
Dependent Claim
76 words
An electrophotographic imaging member having a photoconductive insulating layer comprising the product of the addition polymerization of at least one monomer of the formula ##STR7## R' is hydrogen or methyl; X and Y are independently selected from the group consisting of --NO 2 , halogen, cyano and --CF 3 ; Z is oxygen or dicyanomethylene, and a and b can range from 0 to 3; with the proviso that at least one of R is ##STR8##
Claim 5
Dependent Claim
84 words
An electrostatographic imaging method comprising: a. providing an electrophotographic imaging member having a photoconductive insulating layer comprising a monomer of the formula ##STR9## R' is hydrogen or methyl; X and Y are independently selected from the group consisting of --NO 2 , halogen, cyano and --CF 3 ; Z is oxygen or dicyanomethylene; and a and b can range from 0 to 3; with the proviso that at least one of R is ##STR10## b. forming a latent electrostatic image on said imaging member.
Claim 6
Dependent Claim
84 words
An electrostatographic imaging method comprising: a. providing an electrophotographic imaging member having a photoconductive insulating layer comprising a monomer of the formula ##STR9## R' is hydrogen or methyl; X and Y are independently selected from the group consisting of --NO 2 , halogen, cyano and --CF 3 ; Z is oxygen or dicyanomethylene; and a and b can range from 0 to 3; with the proviso that at least one of R is ##STR10## b. forming a latent electrostatic image on said imaging member.
Claim 7
Dependent Claim
93 words
An electrostatographic imaging method comprising: a. providing an electrophotographic imaging member having a photoconductive insulating layer comprising the product of the addition polymerization of at least one monomer of the formula ##STR11## R' is hydrogen or methyl; X and Y are independently selected from the group consisting of --NO 2 , halogen, cyano and --CF 3 ; Z is oxygen or dicyanomethylene; and a and b can range from 0 to 3; with the proviso that at least one of R is ##STR12## b. forming a latent electrostatic image on said imaging member.
Claim 8
Dependent Claim
93 words
An electrostatographic imaging method comprising: a. providing an electrophotographic imaging member having a photoconductive insulating layer comprising the product of the addition polymerization of at least one monomer of the formula ##STR11## R' is hydrogen or methyl; X and Y are independently selected from the group consisting of --NO 2 , halogen, cyano and --CF 3 ; Z is oxygen or dicyanomethylene; and a and b can range from 0 to 3; with the proviso that at least one of R is ##STR12## b. forming a latent electrostatic image on said imaging member.
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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |