Exposure determination apparatus for a photographic printer

Details Exposure determination apparatus for a photographic printer Exposure determination apparatus for a photographic printer

1977-05-31

1979-05-15

Hix, L. T.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 77, 355 88, G03B 2778

Patent

active

041545230

ABSTRACT:
An exposure control apparatus for use in a photographic printer determines a color correction factor based on color densities of an original. This correction factor is then utilized in customizing a correction matrix which converts signals representing density levels to signals for use in controlling exposures.

REFERENCES:
patent: 3120782 (1964-02-01), Goddard et al.
patent: 3502410 (1970-03-01), King et al.
patent: 3653759 (1972-04-01), Klein
patent: 3697174 (1972-10-01), McCune

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