US3160504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic dodging of photographs
Assignee: Unisys Corp
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Filing: 1963-01-17
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Granted: 1964-12-08
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Expires: 1983-01-17
Abstract
No abstract record available.
Inventors
- 👤 Montani Angelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:09
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/727; Y; Y10; Y10S; Y10S430/00; Y10S430/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN A METHOD OF CONVERTING A PHOTOGRAPHIC IMAGE HAVING LOW, MEDIUM AND HIGH DENSITY AREAS INTO A REVERSAL IMAGE POSSESSING DECREASED DENSITY VARIATIONS, INVOLVING EXPOSING A PHOTOCHROMIC LAYER THROUGH SAID PHOTOGRAPHIC IMAGE TO FORM A MASKING IMAGE THEREOF, EXPOSING A PHOTOSENSITIVE LAYER TO ACTINIC LIGHT THROUGH AID PHOTOGRAPHIC IMAGE AND SAID MASKING IMAGE TO PRODUCE A LATENT REVERSAL IMAGE AND PROCESSING THE PHOTOSENSITIVE LAYER TO PRODUCE THE DESIRED REVERSAL IMAGE, THE IMPROVEMENT COMPRISING EXPOSING SAID PHOTOSENSITIVE LAYER TO A SOURCE OF VISIBLE LIGHT HAVING AN INTENSITY OF FROM 103 TO 1010 LUMENS FOR A PERIOD OF FROM 5 TO 2,000 MICROSECONDS TO PRODUCE SAID LATENT REVERSAL IMAGE WITHOUT SUBSANTIALLY DECAYING THE MASKING IMAGE FORMED IN SAID PHOTOCHROMIC LAYER,IN ORDER TO FACILITATE THE PRODUCTION OF A PLURALITY OF COPIES OF SAID REVERSAL IMAGE BY EXPOSING PHOTOSENSITIVE LAYERS TO SAID SOURCE THROUGH SAID PHOTOGRAPHIC IMAGE AND SAID MASKING IMAGE, WITHOUT NECESSITATING BLEACHING AND REEXPOSURE OF SAID PHOTOCHROMIC LAYER TO RE-FORM SAID MAKING IMAGE.
Claim 2
Dependent Claim
161 words
IN A METHOD OF CONVERTING A PHOTOGRAPHIC IMAGE HAVING LOW, MEDIUM AND HIGH DENSITY AREAS INTO A REVERSAL IMAGE POSSESSING DECREASED DENSITY VARIATIONS, INVOLVING EXPOSING A PHOTOCHROMIC LAYER THROUGH SAID PHOTOGRAPHIC IMAGE TO FORM A MASKING IMAGE THEREOF, EXPOSING A PHOTOSENSITIVE LAYER TO ACTINIC LIGHT THROUGH AID PHOTOGRAPHIC IMAGE AND SAID MASKING IMAGE TO PRODUCE A LATENT REVERSAL IMAGE AND PROCESSING THE PHOTOSENSITIVE LAYER TO PRODUCE THE DESIRED REVERSAL IMAGE, THE IMPROVEMENT COMPRISING EXPOSING SAID PHOTOSENSITIVE LAYER TO A SOURCE OF VISIBLE LIGHT HAVING AN INTENSITY OF FROM 103 TO 1010 LUMENS FOR A PERIOD OF FROM 5 TO 2,000 MICROSECONDS TO PRODUCE SAID LATENT REVERSAL IMAGE WITHOUT SUBSANTIALLY DECAYING THE MASKING IMAGE FORMED IN SAID PHOTOCHROMIC LAYER,IN ORDER TO FACILITATE THE PRODUCTION OF A PLURALITY OF COPIES OF SAID REVERSAL IMAGE BY EXPOSING PHOTOSENSITIVE LAYERS TO SAID SOURCE THROUGH SAID PHOTOGRAPHIC IMAGE AND SAID MASKING IMAGE, WITHOUT NECESSITATING BLEACHING AND REEXPOSURE OF SAID PHOTOCHROMIC LAYER TO RE-FORM SAID MAKING IMAGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |