Patent US3615387A successfully refreshed from Google Patents.
US3615387A
Expired / Lapsed
US
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Strippable layer relief imaging process
Assignee: Xerox Corp
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Filing: 1962-05-08
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Granted: 1971-10-26
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Expires: 1982-05-08
Abstract
Abstract Thermoplastic deformation images are produced by xerographically deforming softenable films temporarily overcoated on conventional xerographic sensitive members. By the use of appropriate support layers for the softenable films, the deformed films can be readily separated from the sensitive member while preserving the image.
Inventors
- 👤 Lester Corrsin
- 👤 Joan R Ewing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:55
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/022; G03G16/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
A method of image reproduction comprising: a. coating the photoconductive surface of a xerographic plate with a double electrically insulating plastic overlay in which the layer nonadjacent the photoconductive surface is a thermoplastic having a softening temperature between about 40* and 80* centigrade, and the layer adjacent the photoconductive surface is a dimensionally stable plastic between a few microns and one mil thick, b. electrostatically charging the surface of the thermoplastic layer, c. exposing said plate to an image pattern to be reproduced, d. electrostatically charging the surface of the thermoplastic layer a second time, e. softening the thermoplastic layer until it deforms in correspondence to the image pattern, and f. stripping the double plastic overlay from said photoconductive surface.
Claim 2
Dependent Claim
20 words
A method image reproduction according to claim 2 in which said softening is produced by application of a solvent vapor.
Claim 3
Independent Claim
134 words
A method of deformation printing comprIsing: a. coating a xerographic plate having a transparent supporting substrate with a dimensionally stable deeply colored plastic layer between a few microns and 1 mil. thick, b. permanently coating said colored plastic with a transparent plastic layer having a melting temperature between 40* C. and 80* C. and a bulk resistivity at 30* C. of at least 1013 ohm-cm., c. applying an electrostatic charge to the surface of said transparent plastic layer, d. projecting an image pattern of light and shadow through said substrate to expose said xerographic plate, e. softening said second plastic layer with infrared radiation until it deforms in accordance with the image pattern, f. cooling said transparent plastic layer, and g. separating said colored plastic layer supporting said transparent plastic layer from said plate.
Claim 4
Dependent Claim
136 words
A process for forming a relief pattern by electrostatic deformation of a thermoplastic surface comprising: a. coating a photoconductive layer supported on a conductive substrate with a double plastic overlay in which the layer nonadjacent the photoconductive surface is a thermoplastic layer having a melting temperature of about 40* C. to 80* C., b. electrostatically charging the surface of said thermoplastic layer with respect to said conductive substrate, c. simultaneously with said charging, heating said thermoplastic layer to soften it to a viscosity of about 104 to 106 poises, d. while charging and softening said thermoplastic layer, exposing said photoconductive layer to an image pattern so that said thermoplastic layer deforms in accordance with said image pattern, e. cooling said thermoplastic layer until it hardens, and f. stripping said double plastic overlay from said photoconductive surface.
Claim 5
Independent Claim
105 words
A method of image reproduction comprising: a. applying a transparent plastic layer to a xerographic plate, b. applying a colored thermoplastic layer having a melting temperature of about 40* to 80* C. to said plastic layer, c. applying an electrostatic charge to the surface of said thermoplastic layer while simultaneously softening said thermoplastic layer and exposing said xerographic plate to an image pattern of light and shadow to be reproduced, d. hardening said thermoplastic layer, and e. stripping said transparent plastic layer carrying said colored thermoplastic layer from the surface of said xerographic plate to obtain an image reproduction of relatively transparent and colored areas.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |