Digital BW, The Print

Hi James,

It's a good idea to wait 24 hrs. before measuring calibration patches for any type of profiling or curve creation just to be on the safe side. Some paper/ink combos will take that long. Others, as you have found out, don't require that much time.

Walt

>-----Original Message-----
>From: James Haney [mailto:jhaney@...]
>Sent: Monday, October 2, 2006 06:05 AM
>To: DigitalBlackandWhiteThePrint@yahoogroups.com
>Subject: [Digital BW] Ink drydown affect on calibration process
>
>I noticed something important this weekend as I was working to tweak  
>some QTR profiles.
>
>I was comparing tones from old patches to some that were freshly out  
>of the printer and finding some hard to explain differences.
>
>In trying to figure out what was going on I got out a patch from the  
>night before and they were much darker.
>
>Basically I noticed that the 100% patch of Museum Black on Photo Rag  
>takes at least 2-3 hours to dry down to its end density.
>
>Patches that read 1.53 five minutes out of the printer read 1.58  
>after an hour and 1.63 after drying over night.
>
>This could certainly account for some challenges I have had in the  
>past getting smooth ramps.
>
>This is definitely going to change my calibration technique.
>
>James
>
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