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PhotoSci I don't think we disagree, you are missing the point I was trying to make. If you are going to display something inside with specific light and environmental circumstances then yes of course you should try to set up the test as close to those circumstances as possible, however in many...

qwertydude Even a xenon arc lamp won't recreate all the damage possible. Ozone testing is a major test done by the big labs like Wilhelm Imaging Research. Sometimes a UV stable ink will badly fade when exposed to ozone. Ozone is usually present in smoggy cities, or also in places where a lot of...

I wanted to let folks know something else about testing for "fade" in the sun. I think it is probably obvious to everyone that the angle of sunlight is different depending on your location. Severe testing is done using closed containers with glass panels in the Arizona desert in the USA and also...

This response is not meant specifically toward Cone Editions, they may do fabulous work, I have no idea, however that is marketing talk on their site. I am sure that like so many others the switch away from OEM ink is driven by cost. They say they switched to 100% pigment inks for even better...

Roger, Thank you for the clarifications and corrections to my comments. I agree that if the aim of your efforts is for personal knowledge of these paper/ink combinations for your personal use then you are OK, and correct that it won't be a really big undertaking. Yes your method is far more...

There is no way to compare one "fade test" from another because the conditions are not the same. As stated the results will depend on BOTH the ink AND the paper. Lighter colors will always "fade" at a faster rate because they are less opaque so more light gets to the substrate (which is also...

By the way folks, printer manufacturers work with both paper manufacturers and ink companies when testing paper handling and how the inks react. They need to decide a range of applications for that printer which is why the have different product ranges such as office machine, photo machines etc...

Please don't take this criticism the wrong way because I applaud your efforts here RogerB. I have been through training for color control and been responsible for color control of a massive international project so I know how difficult it is. The premise of your test (unless I misunderstand it...