US3178281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic color printing
Assignee: Eastman Kodak Co
•
Filing: 1961-05-24
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Granted: 1965-04-13
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Expires: 1981-05-24
Abstract
No abstract record available.
Inventors
- 👤 James G Jarvis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:41
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0142; G03G15/0147; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
THE METHOD OF COLOR REPRODUCTION WHICH COMPRISES PROJECTING BY MEANS OF A LENS ONTO THE FRONT SURFACE OF A PHOTOCONDUCTIVE INSULATING LAYER ON AN ELETRICALLY CONDUCTING BACKING, IN SUCCESSION, A SERIES OF COLOR SEPARATION IMAGES REPRESENTING THE PRIMARY RED, GREEN AND BLUE COMPONENTS OF A PICTURE, CREATING IN THE LIGHT BEAM IN FROMT OF THE LAYER DURING THE PROJECTION OF EACH IMAGE A MIST OF ELECTROSTATICALLY CHARGED PARTICLES OF PARTLY TRANSPARENT INSULATING INK OF A COLOR COMPLEMENTARY TO THE COLOR SEPARATION IMAGE THEN BEING PROJECTED, CREATING AN ELECTRICAL FIELD BETWEEN THE MIST AND THE PHOTOCONDUCTIVE LAYER TO CAUSE PARTICLES OF THE MIST TO DEPOSIT ON THE AREAS OF THE PHOTOCONDUCTOR WHICH ARE CONDUCTING DUE TO THE LIGHT AREAS OF THE COLOR SEPARATION IMAGE THEN THEREON, THE BULESEPARATION-YELLOW-PRINTER IMAGE BEING LAST IN SAID SERIES AND BEING PROJECTED THROUGH THE TWO PREVIOUSLY DEPOSITED INK IMAGES.
Claim 2
Independent Claim
143 words
THE METHOD OF COLOR REPRODUCTION WHICH COMPRISES PROJECTING BY MEANS OF A LENS ONTO THE FRONT SURFACE OF A PHOTOCONDUCTIVE INSULATING LAYER ON AN ELETRICALLY CONDUCTING BACKING, IN SUCCESSION, A SERIES OF COLOR SEPARATION IMAGES REPRESENTING THE PRIMARY RED, GREEN AND BLUE COMPONENTS OF A PICTURE, CREATING IN THE LIGHT BEAM IN FROMT OF THE LAYER DURING THE PROJECTION OF EACH IMAGE A MIST OF ELECTROSTATICALLY CHARGED PARTICLES OF PARTLY TRANSPARENT INSULATING INK OF A COLOR COMPLEMENTARY TO THE COLOR SEPARATION IMAGE THEN BEING PROJECTED, CREATING AN ELECTRICAL FIELD BETWEEN THE MIST AND THE PHOTOCONDUCTIVE LAYER TO CAUSE PARTICLES OF THE MIST TO DEPOSIT ON THE AREAS OF THE PHOTOCONDUCTOR WHICH ARE CONDUCTING DUE TO THE LIGHT AREAS OF THE COLOR SEPARATION IMAGE THEN THEREON, THE BULESEPARATION-YELLOW-PRINTER IMAGE BEING LAST IN SAID SERIES AND BEING PROJECTED THROUGH THE TWO PREVIOUSLY DEPOSITED INK IMAGES.
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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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |