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Yellowish Stain Formation in Inkjet Prints and Traditional Silver-Halide Color Photographs

Inkjet printing of photographs using both dye-based and pigmented inks has become the most popular form of output from digital camera files. In addition to desktop and wideformat applications, inkjet printing technology is now also being adopted for “dry” minilabs and by professional portrait and wedding photography studios. Various factors affecting both light-induced and thermally-induced yellowish stain formation in inkjet prints are described. 1 Stain behavior for representative inkjet papers as well as for selected traditional chromogenic (“silver-halide”) color photographs are discussed. Using data obtained from high-intensity 35 klux tests, potential stain formation and fluorescent brightener activity loss reciprocity failures are described. Problems with the integration of light-induced and thermally-induced yellowing data in accelerated image stability tests are also discussed.