US3884689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycyclic aromatic polymer as a photoconductor or overlayer
Assignee: Xerox Corp
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Filing: 1973-08-30
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Granted: 1975-05-20
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Expires: 1993-08-30
Abstract
Abstract A polyvinylpyrenal copolymer obtained by condensing the corresponding aromatic aldehyde with a copolymer of vinyl alcohol and having a number average molecular weight of at least 5,000. Also included are photoconductive members utilizing such material as an intrinsic photoconductor or as matrix material, demonstrating excellent structural and electronic properties for xerographic purposes.
Inventors
- 👤 William W Limburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:38
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/071; C; C08; C08F; C08F8/00; C08F8/48; C08J; C08J3/00; C08J3/28; C08J5/00; C08J5/18
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
21 words
A PHOTOCONDUCTIVE MEMBER COMPRISING A SUBSTRATE AND AT LEAST ONE ORGANIC PHOTOCONDUCTIVE LAYER COMPRISING AN AROMATIC POLYVINYL POLYMER OF THE FORMULA
Claim 2
Dependent Claim
21 words
A PHOTOCONDUCTIVE MEMBER COMPRISING A SUBSTRATE AND AT LEAST ONE ORGANIC PHOTOCONDUCTIVE LAYER COMPRISING AN AROMATIC POLYVINYL POLYMER OF THE FORMULA
Claim 3
Dependent Claim
27 words
A photoconductive member of claim 1 wherein R1 is defined as hydrogen or a lower alkyl carbonyl group; and R2 is a pyrene group of the formula
Claim 4
Dependent Claim
23 words
A photoconductive member of claim 2 wherein R1 is hydrogen, or a lower alkyl carbonyl group; R2 is a radical of the formulae
Claim 5
Dependent Claim
12 words
A photoconductive member of claim 2 wherein n is defined as zero.
Claim 6
Dependent Claim
12 words
A photoconductive member of claim 3 wherein n is defined as zero.
Claim 7
Dependent Claim
31 words
A photoconductive member of claim 2 wherein R1 is a hydrogen atom or CH3CO-; n is defined as 0 or 1; and R2 is defined as a radical of the formula
Claim 8
Dependent Claim
34 words
A photoconductive member of claim 2 wherein the ratio of m: n:o is about 3-6:0-1:1-8 m, n, o and p being defined as positive integers commensurate with a molecular weight greater than about 12,000.
Claim 9
Dependent Claim
10 words
A photoconductive member of claim 7 represented by the formula
Claim 10
Dependent Claim
29 words
A xerographic photoreceptor component comprising a substrate and at least one photoconductive layer with an applied overcoat layer consisting essentially of an aromatic polyvinyl polymer represented by the formula
Claim 11
Dependent Claim
29 words
A xerographic photoreceptor component comprising a substrate and at least one photoconductive layer with an applied overcoat layer consisting essentially of an aromatic polyvinyl polymer represented by the formula
Claim 12
Dependent Claim
49 words
A xerographic photoreceptor component comprising a substrate and at least one photoconductive layer with an applied overcoat layer consisting essentially of the aromatic polyvinyl polymer of claim 9 wherein R1 is defined as hydrogen or a lower alkyl carbonyl group; and R2 is a pyrene group of the formula
Claim 13
Dependent Claim
45 words
A xerographic photoreceptor component comprising a substrate and at least one photoconductive layer with an applied overcoat layer consisting essentially of the aromatic polyvinyl polymer of claim 9 wherein R1 is hydrogen, or a lower alkyl carbonyl group; R2 is a radical of the formulae
Claim 14
Dependent Claim
53 words
A xerographic photoreceptor component comprising a substrate and at least one photoconductive layer with an applied overcoat layer consisting essentially of an aromatic polyvinyl polymer of claim 9 wherein R1 is a hydrogen atom or CH3CO-; n is defined as 0 or 1; and R2 is defined as a radical of the formula
Claim 15
Dependent Claim
57 words
A xerographic photoreceptor component comprising a substrate and at least one photoconductive layer with an applied overcoat layer consisting essentially of an aromatic polyvinyl polymer as described in claim 10 wherein the ratio of m:n:o is about 3-6:0-1:1-8; m, n, o and p being defined as positive integers commensurate with a molecular weight greater than about 12,000.
Claim 16
Dependent Claim
29 words
A xerographic photoreceptor component comprising a substrate and at least one photoconductive layer with an applied overcoat layer consisting essentially of an aromatic polyvinyl polymer represented by the formula
Claim 17
Dependent Claim
29 words
A xerographic photoreceptor component comprising a substrate and at least one photoconductive layer with an applied overcoat layer consisting essentially of an aromatic polyvinyl polymer represented by the formula
References Cited (Backward Citations)
US3113022A
Cited
US3307940A
Cited
US3163531A
Cited
US3162532A
Cited
US3240597A
Cited
US3373141A
Cited
US3459691A
Cited
US3514435A
Cited
US3655378A
Cited
US3740218A
Cited
US3765884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |