Digital BW, The Print

In a message dated 1/30/07 2:01:37 PM, evogel@... writes:


> -- Now that's a really interesting point. I find the whole uv brightener 
> thing annoying. But I never thought it through to the evaluation issue. I do 
> think it's ironic that uv brighteners are (often) added to paper and then we do 
> everything we can to keep uv away from the paper...
> 

OBAs (optical brightening agents) are sometimes called UV brighteners, but in 
fact they brighten even when no UV is present, as they react to blue visible 
light as well. For B&W fine art printing, non-brightened papers generally suit 
the bill; but many color images end up on brightened papers as it gives the 
whole image more punch, and in the case of inkjet reproductions of paintings on 
canvas, the brightened whites better match the brightened whites found in 
some fine art media. So its hard to blame the canvas printer for choosing a 
brightened canvas, when the artists he prints for use brightened paints, and he 
needs to match those whites as effectively as possible.

C. David Tobie
Product Technology Manager
ColorVision Business Unit
Datacolor Inc.
CDTobie@...
www.colorvision.com


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