QTR-Quadtone RIP

Joost Horsten wrote:

> ...
> I've too little insight yet to agree or disagree. But I have trouble 
> understanding how just one profile could cope with differences in the 
> inks for the different tones. A profile is not unique to a paper but 
> different for each paper-ink set combination. And in the sitation at 
> hand one needs three different ink sets (warm, cool, selenium). My 
> feeling is that your proposal would only work if e.g. the cool inks 
> would behave exactly identical to the warm and selenium inks. And for 
> the UT3D inkset there even is no LK selenium ink.

Joost

Several greyscale inksets are designed to be compatible with each other 
in this sense. I believe the different positions in the various 
piezography sets were all of matching density as are the current K7 
neutral & sepia sets. That is how inks in matching positions can be 
interchanged and used with the same curves.

Similarly MIS FS & FSN, the UT7 carbon & cool toners and UT-R2-Warm & 
Neutral all include similar density inks in the equivalent positions of 
the warm & neutral/cool sets. In that sense the luminance should be the
similar whichever way they are mixed & matched.

Perhaps in this sense, one generic profile would work for each family of 
inks.

I am not familiar with UT3d which you have been using and it sounds like 
this is a more complex set of inks for which the above scenario does not 
apply.

Howard