I'm new to this too (about 1 week into using QTR). I've been working on generating curves for an R1800 with MIS UT inkset and a ColorMunki. Here's what I've come up with for using the ColorMunki.
To get a "usable" linearization set of "L" values, the points need to be increasing in a fairly consistent manner. Sometimes when using the Munki, a patch or two are not measured "correctly" in that the "L" values don't follow the rest of the curve. This is especially noticable in the darkest patches, where the values may actually reverse (darker patches give higher "L" values. I export the L*a*b values from the scanned palette and import them into Excel, where I can plot them ("L" vs. % black). It becomes very apparent which patches fall off the curve. I remove (delete) the offending point(s) then use a 6th order polynomial trendline to generate a smooth curve and use the coefficients to generate a smooth set of points. These are then copied into the "L" values in the text file used to drop into the QTR-linearize droplet. The resultant linearization values, when copied into the QTR ink descriptor, give a nice smooth curve.Message
Re: Invalid linearize curve -- not constantly increasing
2012-05-31 by wolverinemsu
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