US3099209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating residual positive silver halide images with organic sulfur to render said images oleophilic
Assignee: Eastman Kodak Co
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Filing: 1960-02-26
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Granted: 1963-07-30
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Expires: 1980-02-26
Abstract
No abstract record available.
Inventors
- 👤 Rudolph E Damschroder
- 👤 Edward C Yackel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:09
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/06; G03F7/063; G03F7/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A LITHOGRAPHIC PRINTING PROCEESS WHICH COMPRISES REACTING THE RESIDUAL SILVER HALIDE REMAINING AFTER FORMATION OF A DEVELOPED SILVER IMAGE IN THE EMULSION LAYER WITH AN ALKALINE SOLUTION OF A THIOL SELECTED FROM THE GROUP CONSISTING OF P-TOLUENETHIOL, POTASSIUM N-BUTYL ZANTHATE, 2-MERCAPTO-5-PHENYL-1,3,4,-OXIDIAZOLE, 2-MERCAPTOBENZOTHIAZLE, 2-MERCAPTOBENZIMIDAZOLE AND 2-ETHYL-HEZANETHIOL UNTIL THE SURFACE OF THE MOIST EMULSION LAYER IN ONLY THE REGION OF THE UNDEVELOPED SILVER HALIDE HAS BECOME RECEPTIVE TO GREASY INKS, ACIDIFYING THE EMULSION LAYER, INKING THE MOIST EMULSION LAYER AND PRINTING A LITHOGRAPHIC PRINT THEREFROM.
Claim 2
Dependent Claim
83 words
A LITHOGRAPHIC PRINTING PROCEESS WHICH COMPRISES REACTING THE RESIDUAL SILVER HALIDE REMAINING AFTER FORMATION OF A DEVELOPED SILVER IMAGE IN THE EMULSION LAYER WITH AN ALKALINE SOLUTION OF A THIOL SELECTED FROM THE GROUP CONSISTING OF P-TOLUENETHIOL, POTASSIUM N-BUTYL ZANTHATE, 2-MERCAPTO-5-PHENYL-1,3,4,-OXIDIAZOLE, 2-MERCAPTOBENZOTHIAZLE, 2-MERCAPTOBENZIMIDAZOLE AND 2-ETHYL-HEZANETHIOL UNTIL THE SURFACE OF THE MOIST EMULSION LAYER IN ONLY THE REGION OF THE UNDEVELOPED SILVER HALIDE HAS BECOME RECEPTIVE TO GREASY INKS, ACIDIFYING THE EMULSION LAYER, INKING THE MOIST EMULSION LAYER AND PRINTING A LITHOGRAPHIC PRINT THEREFROM.
References Cited (Backward Citations)
US2453346A
Cited
GB758759A
Cited
US2843491A
Cited
DE1058844B
Cited
DE1064343B
Cited
DE1064807B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |