QTR-Quadtone RIP

I think it must be my X-rite 810.  EAM when measured comes in at .13.
 I'll recalibrate this weekend but I just did it a month ago so I'm
surprised it's so far off.  Either I'm not calibrating correctly or
something is wrong with the unit.

Thanks,

Tom

--- In QuadtoneRIP@yahoogroups.com, "Tom Moore" <r.t.moore@r...> wrote:
>
> Dmin is established by the density of paper white. Unless you have some
> white ink installed in your printer, that's as low as you can go. Of
course
> you could use a brighter paper.
> 
> Seriously, though your dmin value does seem unusually high. Looking
at the
> various curves in the distribution, most dmin values are in the
range .02 to
> .08. For example looking at the 4000 curve for Moab Entrada Natural the
> first linearization step (effectively the dmin or density of paper
white) is
> .03 and the 10% gray step, at .015, is just slightly darker than
your dmin. 
> 
> It could be that Kayenta is darker than most other papers, your density
> measurements are off, or your curve is putting ink down at 0% gray. 
> 
> Tom Moore