Chromogenic refers to color photographic processes in which a traditional silver image is first formed, and then later replaced with a colored dye image. Photography (fә'tɒgrәfi or fә'tɑːgrәfi (from Greek φωτο and γραφία is the process and Art of recording pictures by means of capturing A dye can generally be described as a Colored substance that has an affinity to the substrate to which it is being applied
Chromogenic film or paper contains one or many layers of silver halide emulsion, along with dye couplers which are capable of forming visible dyes in combination with processing chemistry. This article is mainly concerned with Still photography film For Motion picture film please see Film stock. Photographic paper is paper coated with Light -sensitive chemicals used for making Photographic prints Photographic paper differs from photo papers A silver halide is one of the compounds formed between Silver and one of the Halogens &mdash Silver bromide (AgBr chloride Dye coupler is present in Chromogenic film and paper used in Photography, primarily color photography A dye can generally be described as a Colored substance that has an affinity to the substrate to which it is being applied In processing, the silver image of each layer is first developed. In concert with the dye couplers in each layer, the process subsequently forms dyes only in those areas where silver is present.
In full-color chromogenic materials, multiple layers of emulsion are sensitized to different wavelengths of light. Light, or visible light, is Electromagnetic radiation of a Wavelength that is visible to the Human eye (about 400–700 Three layers are usually present, generally sensitive to red, green, and blue colored light. Cyan-colored dye is formed on the red-sensitive layer, magenta-colored dye is formed on the green-sensitive layer, and yellow-colored dye is formed on the blue-sensitive layer, following generally the CMY color model.
Some chromogenic black-and-white negative films also exist, mainly to exploit the wide availability of C-41 processing. Black-and-white is a number of Monochrome forms in Visual arts. C-41 is a Color print film developing process C-41 also known as CN-16 by Fuji CNK-4 by Konica and AP-70 by AGFA is the most popular film process in use with most photofinishing These films have softer grain and less contrast than traditional silver halide films. A silver halide is one of the compounds formed between Silver and one of the Halogens &mdash Silver bromide (AgBr chloride In these films, a single emulsion layer has panchromatic sensitivity. Panchromatic film is a type of Black-and-white Photographic film that is sensitive to all Wavelengths of Visible light. The dye image is typically slightly blue because of the choice of dye couplers, and this tends to produce a dark sepia tone when printed on full-color chromogenic paper. Dye coupler is present in Chromogenic film and paper used in Photography, primarily color photography
Each microscopic point of chromogenic dye formation is called a dye cloud. After the formation of dyes is complete, the silver image is removed in processing by a specialty photographic fixer called bleach fix or blix. Photographic fixer is a chemical used in the final step in the Photographic processing of film or paper A processing variation called skip bleach, most popular in motion picture negative processing, allows the silver image to be left partially or completely intact, yielding a type of contrast enhancement. Bleach bypass, also known as skip bleach or silver retention, is an Optical effect which entails either the partial or complete skipping of the Bleaching
The most common chromogenic processes are C-41 for color and black-and-white negative film, RA-4 for color negative paper (see Type C print), and E-6 for slide film. C-41 is a Color print film developing process C-41 also known as CN-16 by Fuji CNK-4 by Konica and AP-70 by AGFA is the most popular film process in use with most photofinishing Black-and-white is a number of Monochrome forms in Visual arts. In photography a negative may refer to three different things although they are all related RA-4 is a developing process for Kodak color negative photographic papers A type C print, C-print or Kodak C-print is a color Photographic print made on negative-type color photographic paper which has at least three emulsion layers of light-sensitive The E-6 process (often abbreviated to just E-6) is a Photographic processing system for developing Ektachrome, Fujichrome, and other color In Photography, a reversal film is a still positive image created on a transparent base using photochemical means
A great deal of research effort has been placed by manufacturers, most notably Fujifilm, Ilford, and Kodak, into controlling the color and tonal characteristics of their chromogenic film and paper. is a Japanese company known for its Photographic film and Cameras Fujifilm is the world’s largest photographic and imaging company. Ilford is a district of the London Borough of Redbridge. It is a suburban development situated east north-east of Charing Cross and one the major metropolitan centres Eastman Kodak Company ( is an American multinational Public company which produces imaging and photographic materials and equipment The sensitization of the silver halide emulsions, the composition and mixture of the dye couplers, and the chemical interactions of layers upon one another during processing (called interlayer effects), are the subjects of numerous patents. A silver halide is one of the compounds formed between Silver and one of the Halogens &mdash Silver bromide (AgBr chloride Dye coupler is present in Chromogenic film and paper used in Photography, primarily color photography Fujifilm is apparently unique in its use of a fourth (cyan-sensitive) color layer in certain of its negative films. is a Japanese company known for its Photographic film and Cameras Fujifilm is the world’s largest photographic and imaging company.
Like the traditional silver halide process, the main hazardous waste product of chromogenic processing consists of silver compounds dissolved in the photographic fixer. A silver halide is one of the compounds formed between Silver and one of the Halogens &mdash Silver bromide (AgBr chloride Photographic fixer is a chemical used in the final step in the Photographic processing of film or paper
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