Actual environment factors such as O3, NO2, SO2, temperature, and humidity in ordinary homes and offices were measured. Color density on Inkjet and Silver halide digital photo images under such environment were traced and how such environmental factors multiply lay impact on each digital images were discussed.The discussion was made in relation with acceleration test results and made based on multiple regression analysis. Both of the discussion results show that the fadings on digital images are caused by number of gas factors such as O3, NO2, and SO2 according to the color. Mixed gas acceleration test using O3, NO2, and SO2 gases represents the actual color-fading more accurately than the single O3 gas test.To simulate the accurate and fair lifetime of gas fastness of various digital photo images, mixed gas test, including O3, NO2, and SO2 is more appropriate.
Yojiro Kojima, Hiroyuki Ogino, Takao Yamamoto, "Study on Gas Fastness of Ink Jet Prints" in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP20), 2004, pp 724 - 728, https://doi.org/10.2352/ISSN.2169-4451.2004.20.1.art00044_2