Photocopying – Projection printing and copying cameras – Multicolor picture
Patent
1987-12-31
1989-06-20
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Multicolor picture
355 68, 355 77, G03B 2780
Patent
active
048413402
ABSTRACT:
In a method of producing additional prints, detection is made as to data relative to an image on an original-image film and data relative to an image printed on a printed sheet of photographic paper from the original-image film. On the basis of the above-mentioned data, arithmetic operations are performed upon the amount of exposure required for printing the image on the photographic paper from the orignal-image film. On the basis of the results of the arithmetic operations, exposure control relative to the printing is performed to finish the color characteristics of an image to be reprinted on the photographic paper so that the color characterisitcs may be made substantially the same as the color characteristics of the image printed on the printed sheet.
A printing apparatus for producing additional prints has a sensor for detecting image data relative to an original-image film; and a sensor for detecting image data relative to an image printed on a printed sheet of photographic paper from the original-image film. The printing apparatus is arranged to perform arithmetic operations upon the amount of exposure required for printing the image on the photographic paper from the original-image film, on the basis of the data detected by these sensors, thereby performing exposure control relative to the printing to finish the color characteristics of the image to be reprinted on the photographic paper so that the color characteristics may be made substantially the same as the color characteristics of the image printed on the printed sheet.
REFERENCES:
patent: 4526462 (1985-07-01), Hope et al.
patent: 4623246 (1986-11-01), Kubota et al.
Fuji Photo Film Co. , Ltd.
Wintercorn Richard A.
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