Solvent/EcoSolvent Inks Profiling Issues
Solvent/EcoSolvent Inks Profiling Issues
- Subject: Solvent/EcoSolvent Inks Profiling Issues
- From: Curtis Lea <email@hidden>
- Date: Fri, 28 Nov 2008 15:04:16 -0700
I have been profiling my large format printers for years with a
DTP41UV and Monaco Profiler 4.5 without fail.
The results have been stellar with dye based and archival pigment inks.
Recently however I have purchased a Mimaki JV33 and have found the
profiles are creating some very dark prints. The midtones are
considerably darker and the shadows are plugged. The adjustments I
need to apply to match my profiled monitor (samsung 275T, coloreyes
display pro/dtp94) on a photoshop levels adjustment layer are in the
range of 1.3-1.4. Since prints of files from outside sources are
evaluated as being just as dark I have eliminated the monitor as being
too light.
Is there anything about Eco-solvent inks and their inherent gloss
levels that is affecting my profiles or equipment to create these
darker prints?
I have used a DTP41 (non UV model) while my own device was out being
re-calibrated and neither the non UV model or the re-calibration has
done anything to alleviate this issue.
I do tend to set my ink limits on the high side but this has never
been an issue before and I experience no over-inking issues with any
media. I use the built in auto settings for ink jet printers and a
mimaki CMYKcm Ecosolvent (ES3) inkset with Wasatch softrip V6.3 and
let the rip handle the RGB-CMYK conversions by sending all jobs with
an embedded RGB profile (AdobeRGB 1998)
The RIP and printer are new to me. My previous printers were all Epson
9*** models with colorburst RIPs and my profiling equipment and
software worked beautifully with that combo.
The hues and saturation are accurate, the grayscale's neutral but the
tonality/lightness is dark. I have tried generating profiles with
either a relative colormetric intent, or perceptual. As well as
setting the Wastatch rip to use either the RC or perceptual intent in
all manner of different combinations without success.
Any suggestions are welcome. I always use the largest number of
targets (2000+) and average a set of three 40 step linearization
targets from within Profiler. The linearization curves appear very....
well linear. In that they are nearly a straight line. I have checked
and found that the prints are stable after imaging with no significant
lightening or darkening occurring as the prints dry. Letting my
targets dry overnight or for 5 minutes has no discernible effect. The
effects occur across a range of medias from a variety of
manufacturers. Whether it's a matte finish, satin/luster or gloss.
Changing resolution and/or number of passes produces identical results.
Thanks in advance,
Curtis Lea
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