Apparatus for reproducing images of color photographic negatives
Abstract
Abstract CONTROLLED REPRODUCTION OF UNDERCORRECTED IMAGES OF COLOR PHOTOGRAPHIC NEGATIVES ON PRINT MATERIAL WHICH IS SENSITIZED IN THE PRIMARY COLORS IS ACHIEVED BY DEFLECTING THREE SECONDARTY LIGHT BEAMS FROM A BEAM OF WHITE LIGHT ISSUING FROM A PRINTING LAMP AND PASSING THROUGH A NEGATIVE TOWARD THE PRINTING STATION, BY PLACING INTO THE PATH OF EACH SECONDARY LIGHT BEAN A COMBINATION FILTER WHICH INCLUDES A COLOR FILTER CAPABLE OF PERMITTING PASSAGE OF LIGHT IN ONE OF THE PRIMARY COLORS AND A GREY FILTER SO THAT SOME LIGHT PASSES THROUGH THE COLOR FILTER AND THE REMAINDER OF THE LIGHT PASSES THROUGH THE GREY FILTER, DIRECTING THE THUS MIXED LIGHT AGAINST SECONDARY ELECTRON MULTIPLIERS, AND UTILIZING SIGNALS PRODUCED BY THE MULTIPLIERS TO CONTROL THE DURATION OF EXPOSURE OF PRINT MATERIAL TO LIGHT IN THE RESPECTIVE PRIMARY COLORS.
Inventors
- 👤 Wolfgang Zahn
Bibliographic Details
Claims Analysis
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |