US2983606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes and products for forming photographic images in color
Assignee: Polaroid Corp
•
Filing: 1958-07-14
•
Granted: 1961-05-09
•
Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 Howard G Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:07
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
251 words
A PROCESS OF FORMING POSITIVE TRANSFER IMAGES IN COLOR COMPRISING THE STEPS OF: PERMEATING AN EXPOSED PHOTOSENSITIVE ELEMENT, INCLUDING A PHOTOSENSITIVE SILVER HALIDE EMULSION, WITH A LIQUID COMPOSITION AND, DURING SAID PERMEATION, HAVING SAID PHOTOSENSITIVE ELEMENT SO SUPERPOSED ON AN IMAGE-RECEIVING LAYER FORMED OF A DYEABLE MATERIAL THAT SAID LIQUID HAS ACCES TO SAID DYEABLE MATERIAL, PROVIDING WITHIN THE LAMINATION COMPRISING SAID PHOTOSENSITIVE ELEMENT AND SAID IMAGE-RECEIVING LAYER AT LEAST ONE DYE DEVELOPER WHICH IS SOLUBLE IN SAID LIQUID AND WHICH WHEN DISSOLVED THEREIN IS MOBILE IN SAID LAMINATION, SAID MOBILE DYE DEVELOPER BEING A COMPOUND WHICH IS BOTH A SILVER HALIDE DEVELOPING AGENT AND A DYE HAVING A PREDOMINANT VISIBLE SPECTRAL ABSORPTION WITHIN THE REGION OF THE SPECTRUM TO WHICH SAID SILVER HALIDE EMULSION IS SENSITIVE, SAID DYE DEVELOPER BEING FURTHER CHARACTERIZED BY PROVIDING AN OXIDATION PRODUCT WHICH IS OF LOWER MOBILITY IN SAID LIQUID THAN THE UNOXIDIZED DYE DEVELOPER, DEVELOPING SAID EXPOSED PHOTOSENSITIVE MATERIAL AND FORMING SAID OXIDATION PRODUCT BY REACTION OF THE DEVELOPER PORTION OF SAID DYE DEVELOPER IN SAID EXPOSED AREAS, TRANSFERRING BY DIFFUSION TO SAID IMAGE-RECEIVING LAYER AT LEAST A PART OF THE UNOXIDIZED DYE DEVELOPER AND DEPOSITING SAID UNOXIDIZED DYE DEVELOPER UPON SAID IMAGERECEIVING LAYER TO DYE SAID LAYER WHEREBY A VISIBLE IMAGE IS CREATED BY SAID TRANSFERRED DYE DEVELOPER, AND INCLUDING THE STEP OF SEPARATING SAID IMAGE-RECEIVING LAYER AND SAID PHOTOSENSITIVE ELEMENT FROM THEIR SUPERPOSED RELATIONSHIP AT SOME STAGE OF SAID PROCES AFTER SAID UNOXIDIZED DYE DEVELOPER HAS BEEN TRANSFERRED TO SAID IMAGE-RECEIVING LAYER.
Claim 2
Dependent Claim
251 words
A PROCESS OF FORMING POSITIVE TRANSFER IMAGES IN COLOR COMPRISING THE STEPS OF: PERMEATING AN EXPOSED PHOTOSENSITIVE ELEMENT, INCLUDING A PHOTOSENSITIVE SILVER HALIDE EMULSION, WITH A LIQUID COMPOSITION AND, DURING SAID PERMEATION, HAVING SAID PHOTOSENSITIVE ELEMENT SO SUPERPOSED ON AN IMAGE-RECEIVING LAYER FORMED OF A DYEABLE MATERIAL THAT SAID LIQUID HAS ACCES TO SAID DYEABLE MATERIAL, PROVIDING WITHIN THE LAMINATION COMPRISING SAID PHOTOSENSITIVE ELEMENT AND SAID IMAGE-RECEIVING LAYER AT LEAST ONE DYE DEVELOPER WHICH IS SOLUBLE IN SAID LIQUID AND WHICH WHEN DISSOLVED THEREIN IS MOBILE IN SAID LAMINATION, SAID MOBILE DYE DEVELOPER BEING A COMPOUND WHICH IS BOTH A SILVER HALIDE DEVELOPING AGENT AND A DYE HAVING A PREDOMINANT VISIBLE SPECTRAL ABSORPTION WITHIN THE REGION OF THE SPECTRUM TO WHICH SAID SILVER HALIDE EMULSION IS SENSITIVE, SAID DYE DEVELOPER BEING FURTHER CHARACTERIZED BY PROVIDING AN OXIDATION PRODUCT WHICH IS OF LOWER MOBILITY IN SAID LIQUID THAN THE UNOXIDIZED DYE DEVELOPER, DEVELOPING SAID EXPOSED PHOTOSENSITIVE MATERIAL AND FORMING SAID OXIDATION PRODUCT BY REACTION OF THE DEVELOPER PORTION OF SAID DYE DEVELOPER IN SAID EXPOSED AREAS, TRANSFERRING BY DIFFUSION TO SAID IMAGE-RECEIVING LAYER AT LEAST A PART OF THE UNOXIDIZED DYE DEVELOPER AND DEPOSITING SAID UNOXIDIZED DYE DEVELOPER UPON SAID IMAGERECEIVING LAYER TO DYE SAID LAYER WHEREBY A VISIBLE IMAGE IS CREATED BY SAID TRANSFERRED DYE DEVELOPER, AND INCLUDING THE STEP OF SEPARATING SAID IMAGE-RECEIVING LAYER AND SAID PHOTOSENSITIVE ELEMENT FROM THEIR SUPERPOSED RELATIONSHIP AT SOME STAGE OF SAID PROCES AFTER SAID UNOXIDIZED DYE DEVELOPER HAS BEEN TRANSFERRED TO SAID IMAGE-RECEIVING LAYER.
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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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |