Digital BW, The Print

If you are using a RIP that allows you to linearise its output then you
would linearise before profiling.  Linearising simply means getting output
that shows a linear (straight line) progression from (in the simple case of
B&W) ink black to paper white, usually as measured by Lab¹s L*.  When you do
an ICC profile you observe a number of samples along that (hopefully
straight) line...sampling every output (response) to every input (stimulus)
would be too hard (particularly in a colour setup).  When the colour
management module comes across a pixel which falls between observations in
the profile it must interpolate to get the right value to which the input
should be changed to.  If the response of the printer between observations
is linear then that interpolation which produce a correct result.  If you
are using, say, the Epson Adv B&W driver it isn¹t possible to linearise the
output before profiling it.  One way to combat that is to increase the
number of stimulus-response observations you use to generate the profile.



From: esharamaki <esharamaki@...>
Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Date: Sat, 09 Dec 2006 17:18:11 -0000
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Subject: [Digital BW] linerization / icc creation

 
 
 

Can someone explain to me the difference between linerization vs.
printing with an icc?  I have printfixpro that I've been using for
color prints and I'd like to use Paul Roark's method of creating icc
for B&W but I'm a little confused.

Do I linerize before creating the ICC or does the ICC take care of that?

Thanks,
Earl

 


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