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Digital BW, The Print

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Message

RE: [Digital BW] Re: R1800 "pure carbon" approach?

2007-08-31 by Paul Roark

Hi Bob,



>> http://www.paulroark.com/BW-Info/Pigment-dispersion.jpg

>That diagram looks just like the Cab-O-Jet 300 black pigment
>as described in

>http://nanoparticles.org/pdf/Kowalski.pdf ! ;)

Ah, more by him.  It was not from that PDF, but a related one I managed to
find on the Cabot website -- subsequently removed.

...

>I still haven't understood why smaller particles of carbon 
>black are apparently blacker than larger particles. 

I'm not sure either.  The smaller color pigs also are said to have higher
gamut -- maybe a related issue.  Dyes make the finest, more even coating,
and they have yet higher gamut usually.

Paul
www.PaulRoark.com

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