US3885962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic and electrophotographic members with glass fiber containing paper substrates
Assignee: Xerox Corp
•
Filing: 1973-07-16
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Granted: 1975-05-27
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Expires: 1993-07-16
Abstract
Abstract A dimensionally stable photographic paper is prepared by applying a photosensitive coating to a bleached softwood kraft fiber paper substrate containing from about 30 to 90 percent glass fibers. The paper base is prepared by adding from about 30 to 90 percent glass fiber to a bleached softwood kraft fiber pulp suspension just prior to passing the pulp through a paper making machine. The photographic paper of the instant invention has particular utility under conditions of high humidity.
Inventors
- 👤 Robert H Macclaren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:13
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/40; G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03G; G03G5/00; G03G5/10; G03G5/101
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
61 words
A PHOTOSENTIVE MEMBER COMPRISING: A. A CELLULOSE FIBER SUBSTRATE HAVING A THERMOPLASTIC RESIN SURFACE SIZE ANC CONTAINING FROM ABOUT 50 TO 80 PERCENT BY WEIGHT OF GLASS FIBERS JAVING LENGTHS RANGING FROM 1 TO 10 MILLIMETERS AND DIAMETERS RANGING FROM 0.09 TO 3 MICRONS, AND B. AT LEAST ONE ALYER OF A PHOTOSENSTIVE MATERIAL CONTAINED ON THE SURFACE OF SAID SUBSTRATE.
Claim 2
Dependent Claim
61 words
A PHOTOSENTIVE MEMBER COMPRISING: A. A CELLULOSE FIBER SUBSTRATE HAVING A THERMOPLASTIC RESIN SURFACE SIZE ANC CONTAINING FROM ABOUT 50 TO 80 PERCENT BY WEIGHT OF GLASS FIBERS JAVING LENGTHS RANGING FROM 1 TO 10 MILLIMETERS AND DIAMETERS RANGING FROM 0.09 TO 3 MICRONS, AND B. AT LEAST ONE ALYER OF A PHOTOSENSTIVE MATERIAL CONTAINED ON THE SURFACE OF SAID SUBSTRATE.
Claim 3
Dependent Claim
59 words
An electrophotographic member comprising: a. cellulose fiber paper substrate having a thermoplastic resin surface size and containing from about 50 to 80 percent by weight of glass fibers having lengths ranging from 1 to 10 millimeters and diameters ranging from 0.09 to 3 microns, and b. at least one photoconductive insulating layer contained on the surface of said substrate.
Claim 4
Dependent Claim
59 words
An electrophotographic member comprising: a. cellulose fiber paper substrate having a thermoplastic resin surface size and containing from about 50 to 80 percent by weight of glass fibers having lengths ranging from 1 to 10 millimeters and diameters ranging from 0.09 to 3 microns, and b. at least one photoconductive insulating layer contained on the surface of said substrate.
Claim 5
Dependent Claim
17 words
The member of claim 2 in which the photoconductive insulator layer comprises zinc oxide in a binder.
Claim 6
Dependent Claim
16 words
The photosensitive member of claim 1 wherein the cellulose fiber is a bleached softwood Kraft fiber.
Claim 7
Dependent Claim
26 words
The photosensitive member of claim 1 wherein the thermoplastic resin surface sizing is selected from the group of butadine/styrene copolymers, polyacrylic resins and polyviny/polyvinyl alcohol copolymers.
Claim 8
Dependent Claim
17 words
The photosensitive member of claim 5 wherein the photosensitive layer is a polycrystalline layer of silver halide.
Claim 9
Dependent Claim
15 words
The photosensitive member of claim 5 wherein the photosensitive layer is a silver halide emulsion.
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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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |