Datacolor User to User Support Group.

Thanks David, I'll give that a try. 


--- In colorvision_group@yahoogroups.com, David Miller <dm2363@...> wrote:
>
> >I'm not sure what to do next. My profiles just aren't matching my monitor,
> >despite repeated
> >calibrations of both monitor and printer. I recently figured out the calibration
> >of the printfix
> >device is supposed to be done on the white thing in the mount, not the white
> >square on the
> >test print, but that hasn't seemed to help much. The prints are not matching the
> >soft proofs
> >either. They are darker, usually, and the color is off.
> >
> >I have also noticed I can't seem to select the papers I want to use in the
> >pulldown menus--
> >namely, the Epson archival matte and premium glossy photo paper. Neither will
> >select, but on
> >the matte I get some strange window popping up behind that seems to be a bug or
> >something.
> >
> >the nozzles are all fine. monitor is at 6500k, 2.2, on a Mac. I've set the
> >luminance for around
> >100, I think, though the numbers seem to want to roam a bit when I'm trying to
> >calibrate.
> >
> >can anyone help?
> 
> 
> There's a bug between the larger format Epson drivers and OSX 10.4.8 and
> later; trying to switch driver settings with the popups in the Epson's
> printer settings pane sends commands that are somehow "leaking through" into
> the PFP application underneath the dialog. We've been trying to figure this
> one out but don't have a fix for it yet. (OSX 10.4.9 doesn't appear to help,
> either).
> 
> That's where the strange behavior comes from.
> 
> There's a workaround: in any other application (like Photoshop), create a
> Preset in the Epson driver that has the settings you want to use (paper
> type, output quality, etc). Then, when you're printing targets from PFP,
> use the Preset to switch the settings for you (this works without a hitch).
> 
> Yes, calibrating the spectro on the calibration TILE (not the paper) is
> correct. Any measurements you created with the spectro calibrated on the
> PAPER are wrong and you need to just throw them out. When in doubt: open
> up the Target window for a measurement set and use the arrow keys to go
> to the paper white square. If you get a Lab value whose L is close to 90;
> and whose a and b values are close to 0, and usually on the same "side" of
> 0; then you took the measurements with the spectro calibrated on the paper
> (wrong). Throw them out so you'll never be tempted to use them again and
> remeasure.
> 
> (Most papers measure with a color cast; typically a "b" value of between
> -3 and -5; although this is true more of glossy papers; matte papers such
> as Epson Enhanced Matte are different. Most papers measure with an L of 94
> or greater. If you see a paper white measurement of, say (90.6, 1.1, 1.3)
> then that's generally a sign of incorrect spectro calibration).
> 
> To prevent this misstep: in the PFP 2.1 software (being readied for
> release), there's a big picture of the spectro itself, sitting on its
> calibration base, with a red arrow pointing to the calibration tile, when
> you get to the UI screen for calibrating the spectro. We're hoping that's
> clear enough...:-)
> 
> Other comments:
> 
> When you print targets and later print through the profile, make sure the
> Epson driver is set the same way. (Now that you know how to use Presets to
> avoid the 3800 driver/OSX 10.4.8+ problem, you should be able to do this
> with any paper type setting that you want). The Color Management pane in the
> driver should be set to Off.
> 
> When you measure, put one blank sheet of paper under the target that you're
> measuring.
> 
> Make sure you always calibrate the spectro with it sitting completely in
> it's base, with the nose flush on the round white tile.
> 
> Best regards,
> 
> -- 
> David Miller
> Senior Software Developer, Digital Color Solutions
> ColorVision
>