US3291603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color proofing constructions and their use
Assignee: 3M Co
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Filing: 1963-11-29
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Granted: 1966-12-13
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Bryan Thomas Toplica
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:18
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/28; G03F; G03F3/00; G03F3/10; G03F3/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
226 words
A COLOR PROOFING PROCESS WHICH COMPRISES: (1) EXPOSING THROUGH A RED COLOR SEPARATION POSITIVE A BLUE PRINTER COMPRISING A TRANSPARENT SUPPORT HAVING A SILVER HALIDE EMULSION COATING IN WHICH IS UNIFORMLY DISPERSED A BLEACHABLE DYESTUFF SYSTEM TO PROVIDE A CYAN COLOR THEREIN, SAID BLEACHABLE DYESTUFF SYSTEM BEING CAPABLE OF SELECTIVE DECOLORIZATION IN THE PRESENCE OF REDUCED, SILVER, (2) DEVELOPING SAID BLUE PRINTER BY DYE-BLEACH TECHNIQUE TO PRODUCE A POSITIVE IMAGE IN SAID CYAN COLOR, (3) EXPOSING THROUGH A GREEN COLOR SEPARATION POSITIVE A RED PRINTER COMPRISING A TRANSPARENT SUPPORT HAVING A SILVER HALIDE EMULSION COATING IN WHICH IS UNIFORMLY DISPERSED A BLEACHABLE DEYESTUFF SYSTEM TO PROVIDE A MAGENTA COLOR THEREIN, SAID BLEACHABLE DYESTUFF SYSTEM BEING CAPABLE OF SELECTIVE DECOLORIZATION IN THE PRESENCE OF REDUCED SILVER, (4) DEVELOPING SAID RED PRINTER BY DYE-BLEACH TECHNIQUE TO PRODUCE A POSITIVE IMAGE IN SAID MAGENETA COLOR, (5) EXPOSING THROUGH A BLUE COLOR SEPARATION POSITIVE A YELLOW PRINTER COMPRISING A TRANSPARENT SUPPORT HAVING A SILVER HALIDE EMULSION COATING IN WHICH IS UNFORMLY DISPERSED A BLEACHABLE DYSTUFF SYSTEM TO PROVIDE A YELLOW COLOR THEREIN, SAID BLEACHABLE DYESTUFF SYSTEM BEING CAPABLE OF SELECTIVE DECOLORIZATION IN THE PRESENCE OF REDUCED SILVER, (6) DEVELOPING SAID YELLOW PRINTER BY DYE-BLEACH TECHNIQUE TO PRODUCE A POSITIVE IMAGE IN SAID YELLOW COLOR, AND (7) SUPERIMPOSING ALL OF SAID PRINTERS IN REGISTER AND VIEWING THE RESULTANT FULL COLOR PROOF.
Claim 2
Dependent Claim
226 words
A COLOR PROOFING PROCESS WHICH COMPRISES: (1) EXPOSING THROUGH A RED COLOR SEPARATION POSITIVE A BLUE PRINTER COMPRISING A TRANSPARENT SUPPORT HAVING A SILVER HALIDE EMULSION COATING IN WHICH IS UNIFORMLY DISPERSED A BLEACHABLE DYESTUFF SYSTEM TO PROVIDE A CYAN COLOR THEREIN, SAID BLEACHABLE DYESTUFF SYSTEM BEING CAPABLE OF SELECTIVE DECOLORIZATION IN THE PRESENCE OF REDUCED, SILVER, (2) DEVELOPING SAID BLUE PRINTER BY DYE-BLEACH TECHNIQUE TO PRODUCE A POSITIVE IMAGE IN SAID CYAN COLOR, (3) EXPOSING THROUGH A GREEN COLOR SEPARATION POSITIVE A RED PRINTER COMPRISING A TRANSPARENT SUPPORT HAVING A SILVER HALIDE EMULSION COATING IN WHICH IS UNIFORMLY DISPERSED A BLEACHABLE DEYESTUFF SYSTEM TO PROVIDE A MAGENTA COLOR THEREIN, SAID BLEACHABLE DYESTUFF SYSTEM BEING CAPABLE OF SELECTIVE DECOLORIZATION IN THE PRESENCE OF REDUCED SILVER, (4) DEVELOPING SAID RED PRINTER BY DYE-BLEACH TECHNIQUE TO PRODUCE A POSITIVE IMAGE IN SAID MAGENETA COLOR, (5) EXPOSING THROUGH A BLUE COLOR SEPARATION POSITIVE A YELLOW PRINTER COMPRISING A TRANSPARENT SUPPORT HAVING A SILVER HALIDE EMULSION COATING IN WHICH IS UNFORMLY DISPERSED A BLEACHABLE DYSTUFF SYSTEM TO PROVIDE A YELLOW COLOR THEREIN, SAID BLEACHABLE DYESTUFF SYSTEM BEING CAPABLE OF SELECTIVE DECOLORIZATION IN THE PRESENCE OF REDUCED SILVER, (6) DEVELOPING SAID YELLOW PRINTER BY DYE-BLEACH TECHNIQUE TO PRODUCE A POSITIVE IMAGE IN SAID YELLOW COLOR, AND (7) SUPERIMPOSING ALL OF SAID PRINTERS IN REGISTER AND VIEWING THE RESULTANT FULL COLOR PROOF.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |