Light Stability of New Polaroid Colour Prints

The new Polaroid ® instant colour print system, SX-70, uses metallized dyes, cyan, magenta, and yellow, which have superior light fastness properties. Structures for the dye developers are given, and also comparative fading data for the colour prints and a high quality commercial chromogenic colour print material. A further step of improvement has been achieved in another experimental colour print material using the same dyes. In the SX-70 print the processing chemicals remain with the picture.