US3709601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the production of color prints
Assignee: Agfa Gevaert AG
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Filing: 1970-03-23
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Granted: 1973-01-09
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Expires: 1990-03-23
Abstract
Abstract Images of color transparencies on strips of exposed photographic film which are joined end-to-end to form an elongated web are reproduced onto successive portions of a roll of photosensitive material by exposure to printing light wherein the ratio of primary colors corresponds to the average ratio of primary colors in all transparencies of an entire strip. Such ratio is determined at a scanning station which is located ahead of the printing station, and successive transparencies of each strip are caused to enter a magazine between the two stations prior to exposure of transparencies in the respective strip to printing light.
Inventors
- 👤 D Mueller
- 👤 W Zahn
- 👤 G Findeis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:58
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/73; G03B27/735; G03B17/00; G03B17/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
148 words
In an apparatus for reproducing the images of color transparencies onto photosensitive material, a combination comprising means for transporting a strip having a plurality of color transparencies along predetermined first and second stations; scanning means provided at said first station for scanning the plurality of transparencies along the strip for determining the ratio of the average intensity of the primary color blue of the scanned plurality of transparencies to the average intensity of the primary color green of the scanned plurality of transparancies and to the primary color red of the scanned plurality of transparencies; and photographing means provided at said second station for reproducing the images of said plurality of transparencies by exposing photosensitive material to printing light wherein the ratio of intensities of light in said primary colors is a function of said ratio of average intensities of the primary colors in said plurality of transparencies.
Claim 2
Dependent Claim
148 words
In an apparatus for reproducing the images of color transparencies onto photosensitive material, a combination comprising means for transporting a strip having a plurality of color transparencies along predetermined first and second stations; scanning means provided at said first station for scanning the plurality of transparencies along the strip for determining the ratio of the average intensity of the primary color blue of the scanned plurality of transparencies to the average intensity of the primary color green of the scanned plurality of transparancies and to the primary color red of the scanned plurality of transparencies; and photographing means provided at said second station for reproducing the images of said plurality of transparencies by exposing photosensitive material to printing light wherein the ratio of intensities of light in said primary colors is a function of said ratio of average intensities of the primary colors in said plurality of transparencies.
Claim 3
Dependent Claim
53 words
A combination as defined in claim 1, wherein said scanning means comprises a source of light arranged to direct light through successive transparencies of said plurality of transparencies, and photoelectric means for measuring the percentage of said primary colors in the light passing through the transparency which registers with said source of light.
Claim 4
Dependent Claim
26 words
A combination as defined in claim 2, wherein said scanning means further comprises evaluating means for averaging the results of measurements performed by said photoelectric means.
Claim 5
Dependent Claim
43 words
A combination as defined in claim 1, further comprising storing means located at a third station between said first and second stations and arranged to accommodate all of said plurality of transparencies of said strip before the foremost transparency reaches said second station.
Claim 6
Dependent Claim
43 words
A combination as defined in claim 4, wherein at least two pluralities of transparencies are united into a continuous web and said storing means is arranged to fully accommodate that one of said pluralities of transparencies which contains the largest number of transparencies.
Claim 7
Dependent Claim
92 words
A combination as defined in claim 1, wherein said photographing means comprises a source of printing light arranged to direct printing light through a transparency at said second station and against photosensitive material behind the transparency at said second station, a plurality of subtractive color filters of maximum density movable into and from the path of said printing light, and displacing means for moving said filters into the path of printing light to the extent which is a function of the percentage of corresponding primary colors in said ratio of average intensities.
Claim 8
Dependent Claim
78 words
A combination as defined in claim 1, wherein said photographing means comprises a source of printing light arranged to direct printing light through those transparencies positioned at said second station, a plurality of color filters, one for each of said primary colors, and displacing means for moving said filters across the entire path of printing light for intervals of time whose length is a function of the percentage of the respective color in said ratio of average intensities.
Claim 9
Dependent Claim
46 words
A combination as defined in claim 7, wherein said photographing means further comprises means for terminating the exposure of photosensitive material to printing light when the total amount of printing light, while a transparency is positioned at said second station, at least approximates a predetermined value.
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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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |