"Mark" <mark@...> wrote: > I believe there are several factors that influence OBA burnout ... > > 2)... When located in top microporous coatings, the OBAs are extremely sensitive to oxidation (just like other dyes)... Mark, do you have any tests or information that indicates whether the use of MIS or other "glop" (glossy optimizer) seals the paper well enough to influence this oxidation rate? With respect to the sprays there has been some speculation that part of the benefit comes from sealing the micro porous coatings, which presumably slows the oxidation rate. Paul www.PaulRoark.com
Message
[Digital BW] Re: looking at unwanted tints in B/W
2011-01-14 by Paul