Re: Contrast Range Control

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From: Jeffrey D. Mathias (jeffrey.d.mathias@worldnet.att.net)
Date: 06/29/00-10:16:02 PM Z


Don Bryant wrote:
> > Sprint Print Brightening Converter.
> Can you elaborate some about this product?

This has been done before. Check the list archives for "optical
brightener" or my guide. What happens is that the brightening agent has
the property that when subjected to UV light, it in turn reflects blue
light. Even a tungsten bulb emits enough UV for the agent to function.
This is a readily available commercial product.

-- 
Jeffrey D. Mathias
http://home.att.net/~jeffrey.d.mathias/


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