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Dye coupler is present in chromogenic film and paper used in photography, primarily color photography. When a color developer reduces ionized (exposed) silver halide crystals, the developer is oxidized, and the oxidized molecules react with dye coupler molecules to form a dye in situ.[1] The silver image is removed by subsequent bleach and fix processes, so the final image will consist of the dye image.
Dye coupler technology has seen considerable advancement since the beginning of modern color photography. Major film and paper manufacturers have continually improved the stability of the image dye by improving couplers, particularly since the 1980s, so that archival properties of images are enhanced in newer color papers and films. Generally speaking, dye couplers for paper use are given more emphasis on the image permanence than those for film use, but some modern films (such as Fujichrome Provia films) use variants of couplers that were originally designed for paper use to further improve the image permanence.
^Rogers, David (October 2007). The Chemistry of Photography: From Classical to Digital Technologies. Royal Society of Chemistry. p. 66. ISBN 9780854042739. OCLC 1184188382. Archived from the original on 24 February 2022.
Dyecoupler is present in chromogenic film and paper used in photography, primarily color photography. When a color developer reduces ionized (exposed)...
also known as a C-print or C-type print, a silver halide print, or a dyecoupler print, is a photographic print made from a color negative, transparency...
the coupler 3-aminophenol gives a magenta-brown dye, while the combination of 2,5-diaminotoluene with the coupler 1-naphthol gives a purple dye. Yellow-green...
negative Dry collodion process Dry plate Dyecoupler process Dye destruction process Dye diffusion transfer process Dye transfer print Eburneum Ectograph Ectographe...
is a third type of coupler called a DIR (Developer Inhibitor Release) coupler. This coupler releases a powerful inhibitor during dye formation, which affects...
black-and-white silver image, a "dyecoupler" added during that stage of development caused a cyan, magenta or yellow dye image to be created along with...
color dye forming coupler: in the blue sensitive layer, the coupler forms a yellow dye; in the green sensitive layer the coupler forms a magenta dye, and...
Collodion process Cross processing Developer Digital image processing Dyecoupler E-6 process Fixer Gelatin silver process Gum printing Instant film K-14...
35mm film for still cameras. The Kodachrome films contained no color dyecouplers; these were added during processing. In late 1936, Agfacolor Neu was...
dye is only created where the couplers are. Thus the development chemical must travel a short distance from the exposed silver halide to the coupler and...
to the coupled port. A directional coupler designed to split power equally between two ports is called a hybrid coupler. Directional couplers are most...
Collodion process Cross processing Developer Digital image processing Dyecoupler E-6 process Fixer Gelatin silver process Gum printing Instant film K-14...
Collodion process Cross processing Developer Digital image processing Dyecoupler E-6 process Fixer Gelatin silver process Gum printing Instant film K-14...
high transmittance of the output coupler. The high gain also leads to high losses, because reflections from the dye-cell walls or flashlamp reflector...
A dye is a colored substance that chemically bonds to the substrate to which it is being applied. This distinguishes dyes from pigments which do not chemically...
doing this, the silver is retained in the emulsion along with the color dyes. The result is a black-and-white image over a color image. The images usually...
empirical formulas for such analysis have been developed, in terms of detailed dye combination absorption spectra and empirical parameters. Standardization...
Collodion process Cross processing Developer Digital image processing Dyecoupler E-6 process Fixer Gelatin silver process Gum printing Instant film K-14...
previously toned in selenium for artistic purposes. Dye toners replace the metallic silver with a dye. The image will have a reduced lifetime compared with...
Collodion process Cross processing Developer Digital image processing Dyecoupler E-6 process Fixer Gelatin silver process Gum printing Instant film K-14...
specialized type of vat dye called Inkodye is also used for sun-printing due to its light-sensitive quality. Unlike other vat dyes which use oxygen to develop...
Collodion process Cross processing Developer Digital image processing Dyecoupler E-6 process Fixer Gelatin silver process Gum printing Instant film K-14...
Collodion process Cross processing Developer Digital image processing Dyecoupler E-6 process Fixer Gelatin silver process Gum printing Instant film K-14...
JPEG, TIFF, and RAW. The types of printers used include inkjet printers, dye-sublimation printer, laser printers, and thermal printers. Inkjet prints...
Collodion process Cross processing Developer Digital image processing Dyecoupler E-6 process Fixer Gelatin silver process Gum printing Instant film K-14...
also known as a C-print or C-type print, a silver halide print, or a dyecoupler print, is a photographic print made from a color negative, transparency...
Collodion process Cross processing Developer Digital image processing Dyecoupler E-6 process Fixer Gelatin silver process Gum printing Instant film K-14...
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