US3573904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination of electrography and manifold imaging
Assignee: Xerox Corp
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Filing: 1967-01-09
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Granted: 1971-04-06
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Expires: 1987-01-09
Abstract
Abstract AN IMAGING PROCESS WHEREIN AN IMAGING LAYER STRUCTURALLY FRACTURABLE IN RESPONSE TO THE COMBINED EFFECT OF AN APLLIED ELECTRICAL FIELD AND EXPOSURE TO ACTINIC ELECTROMAGNETIC RADIATION IS SANDWICHED BETWEEN A DONOR SHEET AND A RECEIVER AT LEAST ONE OF THE SHEETS BEING AT LEAST PARTIALLY TRANSPARENT TO THE ACTINIC ELECTROMAGNETIC RADIATION. THE SANDWICH IS SUBJECTED TO AN IMAGEWISE ELECTRIC FIELD WHILE THE IMAGING LAYER IS UNIFORMLY EXPOSED TO ACTINIC ELECTROMAGNETIC RADIATION. UPON SEPARATION OF THE DONOR SHEET AND RECEIVER SHEET, THE IMAGING LAYER FRACTURES IN IMAGEWISE CONFIGURATION PROVIDING A NEGATIVE IMAGE ON ONE OF THE SHEETS AND A POSITIVE IMAGE ON THE OTHER.
Inventors
- 👤 Harold Ernst Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:28
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/26; B; B41; B41M; B41M5/00; B41M5/10; G03G13/14; G03G13/16; G03G17/00; G03G17/08
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |