Digital BW, The Print

In a message dated 8/12/06 5:03:51 PM, dgattarino@... writes:


> Thanks from the few of you who answerd my question.
> However, none of the replies mentioned the reason for the number they
> quote as the minimum number black inks for fine art B&W.
> 

With only one black, all tones short of dark gray are blended from CMY 
colors, to avoid black grainy dots. With added "light black" tones from midtones on 
to black can be mixed with little color, and mostly gray, so that the amount 
of ink used is less, lowering bronzing. Adding a "light, light black" means 
that even the light grays can be gray, not CMY color blends. That means that even 
when printing color images, neutrals all the way to paper white can be 
printed well with gray inks, and minimize viewing light color shifts in graytone. 
Thats why I stated that three blacks were the minimum for good gray results.

C. David Tobie
Product Technology Manager
ColorVision Business Division
DataColor Inc.
CDTobie@...
www.colorvision.com


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