QTR-Quadtone RIP

Hi John,

The ink limits are different for a 7600 than for a 2200, as you probably
know. And there are no default curves available for the 7600 with
Entrada and UT7 (posted here anyway). So it's trial and error
(mostly error!) as I try to build a curve that works for this
combination.

And I haven't found that banding disappears over night with Entrada.
I wish it did, because I've wrestled with it a lot. My current setup has
eliminated 95% of banding but there is still that 5% I'd like to remove.

The scan was done on a Microtek 1800f at 1800 ppi, 16-bit. It's very
smooth, so I don't think that's the issue. It's more the
insufficient amount of ink I was putting down, which was letting the
paper show through as grain.

Since my original post, I made some progress in reducing grain, mainly
by adding a cool curve with a higher ink limit. Not perfect, but better.
Here's  <http://www.stepwise.ca/QTR_test_strips.jpg> a comparison.

Mark


--- In QuadtoneRIP@yahoogroups.com, "djon43" <djon43@...> wrote:
>
> With 2200 and UT7 and Entrada I've never had artificial "grain" or
> problem with excess ink at default settings. I do have other
> complaints about Entrada.
>
> (Note that ink control has to do with coating, not thickness of paper)
>
> I'm quitting Entrada for HPR because Entrada seems prone to
> microbanding. That microbanding always vanishes overnight. Also,
> Entrada seems to have very faintly less detail resolution than
> Kayenta (nominally Entrada's "proofing" paper, now called LaSal).
> Both factoids (test for yourselves) suggest Entrada absorbs ink
> slowly, and both should minimize grain rather than exaggerate it.
>
> That "test strip" looks a lot like a Nikonscan of silver B&W film...
> if that's what we're seeing the problem might be in the scan.
>
> EEM has reportedly gone through some changes recently but I'm
> mystified why Epson's still using the name (rather than "Enhanced
> Matte Ultra" etc), given the history of yellowing.
>
> John
>



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