US4855201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive imaging members with electron transporting polysilylenes
Assignee: Xerox Corp
•
Filing: 1988-05-02
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Granted: 1989-08-08
•
Expires: 2008-05-02
Abstract
Abstract A negatively charged photoconductive imaging member comprised of a supporting substrate; an electron polysilylene transporting layer; a metal oxide layer; and thereover a photogenerating layer comprised of hydrogenated amorphous silicon.
Inventors
- 👤 Santokh S. Badesha
- 👤 Steven J. Grammatica
- 👤 Frank Jansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:06
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/142; G03G5/144; G03G5/02; G03G5/04; G03G5/043; G03G5/0436; G03G5/06; G03G5/07; G03G5/078
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
30 words
A negatively charged photoconductive imaging member comprised of a supporting substrate; an electron polysilylene transporting layer; a metal oxide layer; and thereover a photogenerating layer comprised of hydrogenated amorphous silicon.
Claim 2
Dependent Claim
30 words
A negatively charged photoconductive imaging member comprised of a supporting substrate; an electron polysilylene transporting layer; a metal oxide layer; and thereover a photogenerating layer comprised of hydrogenated amorphous silicon.
Claim 3
Dependent Claim
70 words
An imaging member in accordance with claim 1 wherein the polysilylene is of the formula ##STR3## wherein R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 are independently selected from the group consisting of alkyl, aryl, substituted alkyl, substituted aryl, and alkoxy; and m, n, and p are numbers that represent the percentage of the monomer unit in the total polymer.
Claim 4
Dependent Claim
26 words
An imaging member in accordance with claim 2 wherein the polysilylene is poly(methylphenyl) silylene, poly(cyclohexyl methyl) silylene, poly(phenethyl methyl) silylene, poly(n-propylmethyl silylene)-comethylphenyl silylene, or poly(n-propylmethyl silylene).
Claim 5
Dependent Claim
25 words
An imaging member in accordance with claim 2 wherein the polysilylene is of a weight average molecular weight of from about 400,000 to about 1,000,000.
Claim 6
Dependent Claim
18 words
An imaging member in accordance with claim 2 wherein the supporting substrate is polymer, or a conductive material.
Claim 7
Dependent Claim
15 words
An imaging member in accordance with claim 5 wherein the supporting substrate is aluminized Mylar.
Claim 8
Dependent Claim
18 words
An imaging member in accordance with claim 2 wherein the metal oxide is silicon oxide, or tin oxide.
Claim 9
Dependent Claim
23 words
An imaging member in accordance with claim 1 wherein the amorphous silicon contains from about 25 to about 40 atomic percent of hydrogen.
Claim 10
Dependent Claim
23 words
An imaging member in accordance with claim 2 wherein the amorphous silicon contains from about 25 to about 40 atomic percent of hydrogen.
Claim 11
Dependent Claim
18 words
An imaging member in accordance with claim 9 wherein the amorphous silicon is doped with phosphorus, or boron.
Claim 12
Dependent Claim
20 words
An imaging member in accordance with claim 1 wherein the electron transporting layer is dispersed in an inactive resinous binder.
Claim 13
Dependent Claim
19 words
An imaging member in accordance with claim 11 wherein the binder is a polyester, a polycarbonate, or polyvinylcarbazole stabilizer.
Claim 14
Dependent Claim
39 words
An imaging member in accordance with claim 1 wherein the polysilylene layer is a thickness of from about 4 to about 25 microns, and the hydrogenated amorphous silicon layer is from about 3 to about 10 microns in thickness.
Claim 15
Dependent Claim
17 words
An imaging member in accordance with claim 1 wherein the imaging member contains thereover a protective layer.
Claim 16
Dependent Claim
22 words
An imaging member in accordance with claim 14 wherein the protective overcoating is comprised of amorphous carbon, silicon nitrides, or silicon carbides.
Claim 17
Dependent Claim
21 words
An imaging member in accordance with claim 2 containing thereover a protective overcoating of amorphous carbon, silicon nitrides, or silicon carbides.
Claim 18
Dependent Claim
22 words
An imaging member in accordance with claim 16 wherein a supporting substrate is comprised of a conductive material, or a polymeric composition.
Claim 19
Dependent Claim
58 words
An imaging member in accordance with claim 2 wherein the supporting substrate is of a thickness of from about 3 mils to about 10 mils; the photogenerating layer is a thickness of from about 0.3 micron to about 10 microns; and the polysilylene electron transport layer is a thickness of from about 2 microns to about 25 microns.
Claim 20
Dependent Claim
45 words
A process for generating developed electrostatic latent images which comprises providing the imaging member of claim 1; forming thereon a negative electrostatic latent image; thereafter accomplishing the development of this image; subsequently transferring the developed image to a suitable substrate; and affixing the image thereto.
Claim 21
Dependent Claim
19 words
A process in accordance with claim 19 wherein the imaging member retains its electrical characteristics for 1,000,000 imaging cycles.
Claim 22
Dependent Claim
27 words
A negatively charged photoconductive imaging member comprised of an electron polysilylene transporting layer; a metal oxide layer; and thereover a photogenerating layer comprised of hydrogenated amorphous silicon.
Claim 23
Dependent Claim
27 words
A negatively charged photoconductive imaging member comprised of an electron polysilylene transporting layer; a metal oxide layer; and thereover a photogenerating layer comprised of hydrogenated amorphous silicon.
Claim 24
Dependent Claim
25 words
An imaging member in accordance with claim 1 wherein the polysilylene electron transporting layer is situated between the supporting substrate and the metal oxide layer.
Claim 25
Dependent Claim
32 words
A negatively charged photoconductive imaging member which comprises, in the order stated, a supporting substrate; an electron transporting polysilylene layer; a metal oxide layer; and a photogenerating layer comprising hydrogenated amorphous silicon.
Claim 26
Dependent Claim
32 words
A negatively charged photoconductive imaging member which comprises, in the order stated, a supporting substrate; an electron transporting polysilylene layer; a metal oxide layer; and a photogenerating layer comprising hydrogenated amorphous silicon.
Claim 27
Dependent Claim
70 words
An imaging member in accordance with claim 23 wherein the polysilylene is of the formula ##STR4## wherein R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 are independently selected from the group consisting of alkyl, aryl, substituted alkyl, substituted aryl, and alkoxy; and m, n, and p are numbers that represent the percentage of the monomer unit in the total polymer.
Claim 28
Dependent Claim
32 words
An imaging member in accordance with claim 23 wherein the polysilylene is selected from the group consisting of poly(methylphenyl) silylene, poly(cyclohexyl methyl) silylene, poly(phenethyl methyl) silylene, poly(n-propylmethyl silylene)-comethylphenyl silylene, and poly(n-propylmethyl silylene).
Claim 29
Dependent Claim
25 words
An imaging member in accordance with claim 23 wherein the polysilylene is of a weight average molecular weight of from about 400,000 to about 1,000,000.
Claim 30
Dependent Claim
42 words
A process for generating developed electrostatic latent images which comprises providing the imaging member of claim 23, forming thereon a negative electrostatic latent image, thereafter developing the image, subsequently transferring the developed image to a suitable substrate, and affixing the image thereto.
Claim 31
Dependent Claim
19 words
A process in accordance with claim 27 wherein the imaging member retains its electrical characteristics for 1,000,000 imaging cycles.
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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) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |