Patent US4034837A successfully refreshed from Google Patents.
Patent US4758488A successfully refreshed from Google Patents.
US4758488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polysilylenes and imaging members therewith
Assignee: Xerox Corp
•
Filing: 1987-08-24
•
Granted: 1988-07-19
•
Expires: 2007-08-24
Abstract
Abstract A photoresponsive imaging member comprised of a supporting substrate, a photogenerating layer, and a hole transporting layer comprised of a polysilylene stabilized with a component possessing an ionization potential equal to or greater than the polysilylene.
Inventors
- 👤 Gordon E. Johnson
- 👤 Milan Stolka
- 👤 Ronald J. Weagley
- 👤 Frederick J. Roberts, Jr.
- 👤 Santokh S. Badesha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:43
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/062; G03G5/07; G03G5/078
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
49 words
A photoresponsive imaging member comprised of a supporting substrate, a photogenerating layer, and a hole transporting layer comprised of a polysilylene stabilized with a component possessing an ionization potential equal to or greater than the polysilylene and an additive absorption spectrum which overlaps the fluorescence spectrum of the polysilylene.
Claim 2
Dependent Claim
49 words
A photoresponsive imaging member comprised of a supporting substrate, a photogenerating layer, and a hole transporting layer comprised of a polysilylene stabilized with a component possessing an ionization potential equal to or greater than the polysilylene and an additive absorption spectrum which overlaps the fluorescence spectrum of the polysilylene.
Claim 3
Dependent Claim
72 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 reflect the percentage of the particular monomer unit in the total polymer compound.
Claim 4
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the polysilylene is poly(methylphenyl silylene).
Claim 5
Dependent Claim
15 words
An imaging member in accordance with claim 1 wherein the polysilylene is poly(n-propylmethyl silylene)-co-methylphenyl silylene.
Claim 6
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the polysilylene is poly(n-propylmethyl silylene).
Claim 7
Dependent Claim
28 words
An imaging member in accordance with claim 1 wherein there is selected a stabilizing component selected from the group consisting of aromatic hydrocarbons, organic scintillators, and laser dyes.
Claim 8
Dependent Claim
29 words
An imaging member in accordance with claim 6 wherein the stabilizer is present in an amount of from about 2 percent by weight to about 6 percent by weight.
Claim 9
Dependent Claim
30 words
An imaging member in accordance with claim 6 wherein the aromatic hydrocarbon stabilizer is selected from the group consisting of anthracene, 9,10-diphenyl anthracene, fluoranthene, chrysene, 4,5-dimethyl chrysene, p-quaterphenyl, and benzanthrene.
Claim 10
Dependent Claim
19 words
An imaging member in accordance with claim 6 wherein the organic scintillator stabilizer is 2,5-diphenyloxazole, 1,4-bis[2-(5-phenyloxazole)]benzene, 2-(4-biphenyl)-6-phenylbenzoxazole, or 2-(4-biphenyl)-5-phenyl-1,3,4-oxadiazole.
Claim 11
Dependent Claim
14 words
An imaging member in accordance with claim 1 wherein the stabilizer is 9,10-diphenyl anthracene.
Claim 12
Dependent Claim
15 words
An imaging member in accordance with claim 1 wherein the stabilizer is an aryl amine.
Claim 13
Dependent Claim
24 words
An imaging member in accordance with claim 11 wherein the aryl amine is selected from the group consisting of N,N'-diphenyl-N,N'-bis(3-methylphenyl)-[1,1-phenyl-biphenyl]-4,4'-diamine, tetraphenyl benzidine, and tetra(p-tolyl)benzidine.
Claim 14
Dependent Claim
25 words
An imaging member in accordance with claim 1 wherein the ionization potential of the stabilizer component is from about 7 to about 10 electron volts.
Claim 15
Dependent Claim
26 words
An imaging member in accordance with claim 1 wherein the stabilizer component absorbs light in the wavelength region of from about 320 to about 370 nanometers.
Claim 16
Dependent Claim
17 words
An imaging member in accordance with claim 1 wherein the stabilizer is incorporated into the polysilylene backbone.
Claim 17
Dependent Claim
30 words
An imaging member in accordance with claim 1 wherein the photogenerating layer is comprised of photogenerating pigments selected from the group consisting of inorganic photoconductive pigments, and organic photoconductive pigments.
Claim 18
Dependent Claim
20 words
An imaging member in accordance with claim 16 wherein the inorganic pigments are amorphous selenium, selenium alloys, or trigonal selenium.
Claim 19
Dependent Claim
17 words
An imaging member in accordance with claim 1 wherein there is further included thereover a protective overcoating.
Claim 20
Dependent Claim
17 words
An imaging member in accordance with claim 2 wherein there if further included thereover a protective overcoating.
Claim 21
Dependent Claim
22 words
An imaging member in accordance with claim 1 wherein a supporting substrate is comprised of a conductive material or a polymeric composition.
Claim 22
Dependent Claim
58 words
An imaging member in accordance with claim 1 wherein a 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 hole transport layer is a thickness of from about 2 microns to about 50 microns.
Claim 23
Dependent Claim
18 words
An imaging member in accordance with claim 1 wherein the photogenerating layer is dispersed in a resinous binder.
Claim 24
Dependent Claim
18 words
An imaging member in accordance with claim 1 wherein the stabilized polysilylene is dispersed in a resinous binder.
Claim 25
Dependent Claim
45 words
A process for generating developed electrostatic latent images which comprises providing the imaging member of claim 1, and forming thereon an 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 26
Dependent Claim
17 words
A process in accordance with claim 24 wherein the imaging member resists photodegradation for 1,000,000 imaging cycles.
Claim 27
Dependent Claim
21 words
A process in accordance with claim 24 wherein the polysilylene hole transporting component retains its electrical characteristics for 500,000 imaging cycles.
Claim 28
Dependent Claim
20 words
A process in accordance with claim 24 wherein the photoresponsive imaging member retains its mechanical properties for 500,000 imaging cycles.
References Cited (Backward Citations)
US4172933A
Cited
US4464460A
Cited
US4587205A
Cited
US4588801A
Cited
US4618551A
Cited
US4588666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |