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Technical information and history about Cibachrome

The photocinematographic proceedings in subtractive syntesys trichromatic distruction dyes (also called extripation dyes or dyes bleaching out) goes back to 1906, according to some authors to 1904 or 1895 (Utocolor of J. H. Smith) and to 1934 (Gasparcolor of Imre and Bela Gaspar).

Therefore they are older than the usual proceedings or chromogenic copulants introduced in 1936. 

The print of pictures in Ilfochrome Classic is a proceeding in a dye colour distruction positive to positive at a very high chromatic quality. It takes advantage of cathaltic dyes bleaching out principle where the dyes are pre-incorporated in the same paper.

The prints are made on a surface of polyesther dimensionally stable-triacetate unlikely the surface of the traditional paper. Since the AZO dyes are used on the polyesther surface, the print doesn't fade , doesn't lose in the sharp colours, doesn't get damaged for a very long time. Ilfochrome print characteristics are brightness, pure colours , and environmentally safer and also used in archival work, able to reproduce, with a great precision, the original slide.

The AZO dyes distruction Cibachrome proceeding was originally made in 1960 by Ciba-Geigy Corporation in Swizerland.
Later this printing process was bought by Ilford which changed his name in "Ilfochrome". The latter is known as "ifochrome Classic" but it is still commonly called nowdays "Cibachrome".

The "Cibachrome" print method has got enormous advantages compared to the other kinds of printing.

The emulsifying agent composition used in the Ilfochrome prints is responsible for the purity in the colours, the bright images, environmentally safe and excellent for archival work.
In the taditional materials in colour, the dyes form during the chromogenic development. The dyes in the "Cibachrome" are already present in the emulsion and are destryed when not necessary during the development. In this way it is possble to use brighter AZO dyes than the tradiotional ones since they are closer to the ideal spectrum of primary colours such as light blue, magenta and yellow on which the subtractive trichromatic syntesys si based on.

For these reasons an Ilfochrome print characteristic is brightness and pure colours.
Furthermore, unlikely traditional prints, it doesn't change colour with time or by sun light exposition. Therefore it's suitable for exhibitions, collections and archival work.

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