Colour Films and Papers

International Organization for Standardization (ISO). Photography—Processed Photographic Colour Films and Paper Prints— Methods for Measuring Image Stability. ISO 10977 1993, Geneve, Switzerland 1993. 

Photography - processed photographic colour films and paper prints - methods for measuring image stability, ISO 18909, International Organization for Standardization, Geneva, Switzerland, 2006. 

Additives for polymers, coatings, lubricants, printing inks, photographic films and paper. Since April 1998 also includes water treatment chemicals Colors colours for inks, paints, plastics, textiles and fibres ... 

Formaldehyde and formaldehyde releasers are used as preservatives in process solutions and for gelatine, and in stabilising baths for colour film and colour paper prints. Kathon CG and i,2-benzisothiazolin-3-one (BIT) may also be used as slimicides in process solutions and in stabilisers for colour paper prints (Ericson, personal communication). They may be undeclared. 

Formaldehyde 1% aq Biocide in process solutions for gelatine in stabilising baths for colour film and colour paper prints... 

Colour formers such as compounds 243 and 245 are not inherently thermochromic. For example, they melt without any change in colour. However, they may be used to generate colour thermally, either irreversibly or reversibly, as composite materials. In thermally sensitive paper, the colour former and an acidic developer, usually a phenol, are dispersed as insoluble particles in a layer of film-forming material. When brought into contact with a thermal head at around 80-120 °C, the composite... 

The two basic types of colour film are the colour reversal film for transparencies and the colour negative film used to produce prints on colour papers. 

Figure 7.4 Classification and image processing results of a typical situation in polymer waste recycling (a) digital image (b) initial classification result (c) calculation of separation data based on the initial classification result (d) classification result after real-time image processing. A, B Polyethylene terephthalate (PET) bottles with paper labels, C PE bottle with paper label, D PE bottle with PE film label, E PP cup, F PS cup. Classification colour code red high-density PE green PS dark blue PET yellow PP light blue paper.

In laminates intended for use out-of-doors papers with superior colourfastness may be used and normally their construction includes an overlay sheet of ultra-violet absorbing thermoplastic film—which helps to reduce fading of the colour, and whitening. 

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