Tripack

Tripack
Consisting of three emulsion layers of different sensitivity each on its own base. It is used to obtain three separation negatives with a single exposure.
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Tripack - photographic material, used in color photography, consisting of three emulsion layers of different sensitivity each on its own base. It is used to obtain three separation negatives with a single exposure.

The film is also known as an Integral Tripack. Nearly all other color films have dye couplers incorporated into the three emulsion layers to ensure that the correct dye forms in the correct layer when all three are developed at the same time.

-Azo dyes - compounds forming colors of great strength and purity. Used in camera filters and integral tripack dye-bleach materials.

To record the image as it appeared in the original scene, you must print the color negative onto a second tripack material-the color printing paper.

See also: Negative, Photography, Emulsion, Print, Photograph