Digital BW, The Print

Hi André,

 

There have been occasional problems with the blended inks (carbon blended
with cyan and magenta or blue) like the UT-FSN from settling if the printer
has not been used for a while or if a CFS is used and not agitated, from ink
color batch differences, and from simply the differences among papers.
Getting an inkset to print “neutral” is always, of course, a compromise
because each coating will print somewhat differently.

 

With the UT-FSN, the dark gray inks are more green/less magenta than the
light gray inks.  So, at least with a QTR, you have some control of the Lab
A axis (green-red/magenta) by how you write the curves.  For example, to
reduce a magenta cast, you can use more of the dark grays and less of the
light ones, being limited mostly by when the dots become visible.  With an
1160, you should have a fair amount of latitude here.  Linearization should
not result in blocked shadows and a dark print, however.  Be sure system was
linearized at the same resolution that it’s being printed.

 

My first guess as to cause is that you’re seeing some settling or ink batch
differences.  Pigment inks need agitation.

 

Paul

www.PaulRoark.com <http://www.paulroark.com/>  

 

 

  _____  

From: DigitalBlackandWhiteThePrint@yahoogroups.com
[mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Andre
Vallejo da Silva
Sent: Sunday, December 09, 2007 8:23 AM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: [Digital BW] MIS UT-FSN Inks...Magenta cast!

 

I print with this inkset on a 1160. Shouldn't it be neutral? All
prints on all papers come with a magenta cast when printed from PS or
QImage. Strange enough,when I print from QTR,with a curve I linearized
from one of this magenta prints(using printfixpro),it prints
neutral,but then the blacks are blocked and the image dark...
Any thoughts?
André

 



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