brilliant— i will give that a try and keep you posted on the results.
thank you . . .
michael
On Jun 26, 2013, at 1:37 PM, C D Tobie <CDTobie@...> wrote:
Not sure which of us "Davids" you are addressing. But I'll point out that the critical factor here is the paper involved. I would guess that Kirkland Gloss is highly whitened. This means there are optical brighteners that are causing the overflow condition on white and near white patches. One hack for this is to calibrate the spectro on the paper in question, instead of its white tile. While this is not ideal, it may well produce a usable profile for this paper, which you are not going to get otherwise. Avoiding highly whitened papers is another workaround, but not one that will help you with this particular situation.C. David Tobie
Global Product Technology Manager
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Datacolor
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On Jun 26, 2013, at 2:04 PM, Michael de Courcy <mdec@...> wrote:hello david,i have been trying to create a profile for a new paper and my spectrometer will measure about 99 percent of the target patches with no problem each target however has several patches which give me a solid yellow or solid cyan reading which is obviously wrong i re-measured it over and over again— same wrong reading — i have restarted the application —re started the computer— still those particular target patches refuse to measure correctly. i have a ticket going with datacolor support and was told that the calibration tile needed cleaning. which i did as they directed with dish washing detergent and warm water it seemed seems clean to me. i have observed that it is ever so slightly discolored i assume from contact with the spectro . but this is extremely slight barely visible. after cleaning i got the same result exactly. i am attaching several screen captures of the split measures as illustrations. also the xml profile. i am printing black and white images and the profile results in a yellow cast. not usablei have made been making profiles for years and have not had this problem. there has been no physical damage to the hardware it is stored in its protective case between operations.i am working on a 2008 iMac with osx 10.8.4 spiderprint 4.2.3 library version 1.85why would only certain patches be a problem. any ideas.thank you . . .michael