Device for measuring amount of tone correction

Facsimile and static presentation processing – Facsimile – Recording apparatus

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Details

358 76, 358 80, 358284, H04N 140

Patent

active

044673647

ABSTRACT:
A device used, when a color printing block is produced from a color photographic film in accordance with color scanner technique, for compensating a difference in color density between photograph and print and arranged to measure accumulative density distribution of a color signal picked up from the photographic film, just before and after effecting tone control operation as monitoring an optimum tone-controlled color image, and, then, arithmetically process the measured data to obtain the amount of correction to be effected at each density, which is displayed on a cathode ray rube in a form of correction curve and/or printed on a paper in a form of table.

REFERENCES:
patent: 4037249 (1977-07-01), Pugsley
patent: 4133008 (1979-01-01), Tisue
patent: 4240107 (1980-12-01), Yoshida
patent: 4285009 (1981-08-01), Klopsch
patent: 4364084 (1982-12-01), Akimoto et al.
patent: 4402015 (1983-08-01), Yamada

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