High fidelity color prints

Photocopying – Projection printing and copying cameras – Multicolor picture

Patent

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Details

355 77, G03B 2732, G03B 2752

Patent

active

041780965

ABSTRACT:
This invention relates to finished photographic reproduction and imaging system by which the photographic color matching to that of the object photographed is accomplished by means of an imposed, permanently adherent integral overlay of transparent film serving to adjust, by addition or subtraction of the color deficiences or excesses with respect to chroma, value and hue so as to more nearly and truly match or approximate the color or colors of the object from which the photograph was made. The color correcting or adjusting overlay of the transparent colored films comprise a broad range of chromal intensities of the nominally red, yellow, blue and green and other intermediate spectral hues and that of discrete mixtures with several orders of color intensities, which overlay is further provided with a pressure-sensitive adhesive for permanent and smooth affixture to the photographic emulsion of the print which is to be provided with the necessary correction or adjustment. The invention involves the use of a novel overlay laminating film having high transparency, mechanical strength and tear resistance, dyeable to a varied range of color intensitities and provided with a thin layer of pressure-sensitive adhesive. The novel color correcting adherent laminating overlay is applied to the color deficient or exaggerated print wherein the color correction, augmentation or appropriate adjustment is predetermined from already measured intensities of the selected spectral standards of red, green, yellow and blue using digital color difference comparator that provides numerical, quantitized reflections of the selected color reference standards to which the color correcting overlay laminates are made to match for a high fidelity color print.

REFERENCES:
patent: 2050552 (1936-08-01), Baker
patent: 2084353 (1937-06-01), McNett
patent: 2927857 (1960-03-01), Pohl
patent: 3619051 (1971-11-01), Wright
patent: 3967897 (1976-07-01), Rogers

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