"john" <deanwork2003@...> wrote: > > ... the Premier Alise with whiteners ... fell apart fast. ... It would be nice to know more about whiteners. Looking at a small sample of Aardenburg-Imaging test results, mostly from the highly brightened category, the following tends to support what you've observed. Paper: Start Lab B, 10 MLuxHrs, 50 MLuxHrs Alise: -3.1, -0.3 0.8 Epson Prem PPM -4.4 -2.5 0.6 Fuji DL 400 Mat -7.7 -8.1 -7.0 Br'g Color Velv -2.1 -2.7 -0.2 Eps Exh Fiber -5.0 -3.4 1.6 H Photo Rag 0.9 -0.1 0.8 HPR is obviously not from the highly brightened category, but it has always impressed me with its lack of warming -- possibly balancing the fading of the brighteners with the bleaching of the paper base. I suppose ultimately the paper base color will be where the image white ends up. But if that paper itself has been brightened, then we might not be able to tell what the underlying paper Lab B is. The information in Ernst's paper database would be interesting to correlate with how long the papers will stay bright. In wonder how Fuji manages to keep it's DL 400 matte paper so bright for so long. I tend to think Fuji knows a lot about dyes and chemistry. Maybe they've come up with a Claria-quality brightener dye. Paul www.PaulRoark.com
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Re: paper quandary
2011-05-07 by Paul