colour coupler BrE technical
color coupler AmE technical

Upon processing, colour couplers produce cyan, magenta and yellow dyes, representing the true colours of the subject.

The basis for ORWO was the Agfa Wolfen plant, where the first modern colour film, with incorporated colour couplers, Agfacolor, was developed in 1936.

The emulsion layers can include the colour dyes, as in Ilfochrome; or they can include colour couplers, which react with colour developers to produce colour dyes, as in type C prints or chromogenic negative-positive prints.

This is because developed Kodachrome does not retain unused color couplers.

Upon processing, colour couplers produce cyan, magenta and yellow dyes, representing the true colours of the subject.

Unlike Cinecolor, however, the film was not dyed with a toner but a color coupler, similar to Eastmancolor film.

Each layer of the film contains different color couplers, which react with the same oxidized developer molecules but form different color dyes.

Kodacolor film had been introduced by the company the year before, but the Hanson process, known as the color coupler masking system, overcame deficiencies in the product.

Mannes and Godowsky followed that route, started experimenting with color couplers, but their experiments were hindered by a lack of money, supplies and facilities.

Oxidized color developer molecules react with the color couplers and color dyes are formed in each of the three layers of the film.

Unlike Kodachrome, the color couplers in Agfacolor Neu were incorporated into the emulsion layers during manufacture, which greatly simplified the processing.

A color developer then developed the fogged image, and its exhaustion products reacted with a color coupler to form a dye in the color complementary to the layer's sensitivity.

For every silver halide grain there is a matching color coupler grain (except Kodachrome film, to which color couplers were added during processing).

Fischer himself did not find a way to stop the color couplers and color sensitizing dyes from wandering from one layer into the other, where they would produce unwanted colors.

The basis for ORWO was the Agfa Wolfen plant, where the first modern colour film, with incorporated colour couplers, Agfacolor, was developed in 1936.

The color couplers in the blue-sensitive layer will form yellow dye during processing, the green layer will form magenta dye and the red layer will form cyan dye.

Kodachrome film has no integral color couplers; dyes are produced during processing (each color in a separate step) by the reaction of the color couplers with the oxidised developer.

Without special film processing, the result would simply be three superimposed black-and-white images, but complementary cyan, magenta, and yellow dye images were created in those layers by adding color couplers during a complex processing procedure.

But in a color film, the by-products of the development reaction simultaneously combine with chemicals known as color couplers that are included either in the film itself or in the developer solution to form colored dyes.

The emulsion layers can include the colour dyes, as in Ilfochrome; or they can include colour couplers, which react with colour developers to produce colour dyes, as in type C prints or chromogenic negative-positive prints.

The emulsion consists of silver halide grains suspended in a gelatin colloid; in the case of color film, there are three layers of silver halide, which are mixed with color couplers and interlayers that filter specific light spectra.

Each of the three layers in the proposed film would be sensitive to one of the three primary colors, and each of the three layers would have substances (called "color couplers") embedded in them that would form a dye of the required color when combined with the by-products of the developing silver image.

Some three years later they were still experimenting using this controlled diffusion method of separating the colors in the multi-layer emulsion, but by then they had decided that instead of incorporating the color couplers into the emulsion layers themselves, they could be added to the developing chemicals, solving the problem of wandering color couplers.