Digital BW, The Print

In a message dated 12/6/06 7:19:15 PM, paul.roark@... writes:


> What I don't hear, however, is that profiling software can alter the gray
> ink substitution algorithms of the driver in printers like the Epons 2400.
> That is, for example, as I understand it, the Epson k3 printers in ABW mode
> use more gray ink in the mix than in RGB mode, at least for rather neutral
> prints.
> 

I'd heard that as well, but the effect of it I was most concerned about was 
metameric shift under differing light sources, and I don't find a significant 
variation between AWB and Color prints of similar gray values in terms of 
observable metamerism. In fact I find it difficult to distinguish higher metamerism 
between either of these, and prints from tinted gray inksets. So my 
conclusion is that all of these methods make it under the visible metamerism bar, and 
what we have left to deal with is smoothness, detail, and what we see when we 
get REALLY close to the prints...

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


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