US3094035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection printer provided with comparison negatives
Assignee: Agfa Gevaert NV
•
Filing: 1959-05-06
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Granted: 1963-06-18
•
Expires: 1979-05-06
Abstract
No abstract record available.
Inventors
- 👤 Baasner Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:22
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/727
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
IN A PROJECTION PRINTER, IN COMBINATION, IMAGERECEIVING MEANS FOR RECEIVING A NEGATIVE IMAGE WHICH IS ADAPTED TO BE OBSERVED BY THE OPERATOR; AND A SERIES OF COMPARISON NEGATIVES LOCATED ADJACENT SAID MEANS TO BE VISIBLE TO THE OPERATOR SIMULTANEOUSLY WITHTHE NEGATIVE IMAGE, SAID COMPARISON NEGATIVES EACH HAVING AREAS OF MAXIUMUM AND MINIMUM DENSITY AND THE DIFFERENCE BETWEEN THE MAXIMUM AND MINIMUM DENSITIES OF ANY ONE OF SAID SERIES OF COMPARISON NEGATIVES BEING DIFFERENT FROM THE DIFFERENCE BETWEEN THE MAXIMUM AND MINIMUM DENSITIES OF ANY OTHER ONE OF SAID SERIES OF COMPARISON NEGATIVES, SO THAT THE OPERATOR BY SIMULTANEOUSLY OBSERVING THE NEGATIVE IMAGE AND THE SERIES OF COMPARISON NEGATIVES CAN SELECT THE COMPARISON NEGATIVE WHICH HAS A DIFFERENCE BETWEEN ITS AREAS OF MAXIMUM AND MINIMUM DENSITY CLOSEST TO THE DIFFERENCE BETWEEN THE AREAS OF MAXIMUM AND MINIMUM DENSITY OF THE NEGATIVE IMAGE; AND ADJUSTING MEANS FOR ADJUSTING THE AMOUNT OF LIGHT USED TO EXPOSE A PRINT, SAID ADJUSTING MEANS BEING ACTUATED BY THE OPERATOR ACCORDING TO THE SELECTED COMPARISON NEGATIVE
Claim 2
Dependent Claim
169 words
IN A PROJECTION PRINTER, IN COMBINATION, IMAGERECEIVING MEANS FOR RECEIVING A NEGATIVE IMAGE WHICH IS ADAPTED TO BE OBSERVED BY THE OPERATOR; AND A SERIES OF COMPARISON NEGATIVES LOCATED ADJACENT SAID MEANS TO BE VISIBLE TO THE OPERATOR SIMULTANEOUSLY WITHTHE NEGATIVE IMAGE, SAID COMPARISON NEGATIVES EACH HAVING AREAS OF MAXIUMUM AND MINIMUM DENSITY AND THE DIFFERENCE BETWEEN THE MAXIMUM AND MINIMUM DENSITIES OF ANY ONE OF SAID SERIES OF COMPARISON NEGATIVES BEING DIFFERENT FROM THE DIFFERENCE BETWEEN THE MAXIMUM AND MINIMUM DENSITIES OF ANY OTHER ONE OF SAID SERIES OF COMPARISON NEGATIVES, SO THAT THE OPERATOR BY SIMULTANEOUSLY OBSERVING THE NEGATIVE IMAGE AND THE SERIES OF COMPARISON NEGATIVES CAN SELECT THE COMPARISON NEGATIVE WHICH HAS A DIFFERENCE BETWEEN ITS AREAS OF MAXIMUM AND MINIMUM DENSITY CLOSEST TO THE DIFFERENCE BETWEEN THE AREAS OF MAXIMUM AND MINIMUM DENSITY OF THE NEGATIVE IMAGE; AND ADJUSTING MEANS FOR ADJUSTING THE AMOUNT OF LIGHT USED TO EXPOSE A PRINT, SAID ADJUSTING MEANS BEING ACTUATED BY THE OPERATOR ACCORDING TO THE SELECTED COMPARISON NEGATIVE
References Cited (Backward Citations)
US1926597A
Cited
US2231395A
Cited
US2322044A
Cited
US2380244A
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US2460060A
Cited
US2853921A
Cited
US2794366A
Cited
US2795168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |