Re: bestcolor bestlin tool
Re: bestcolor bestlin tool
- Subject: Re: bestcolor bestlin tool
- From: Roger Breton <email@hidden>
- Date: Fri, 04 Nov 2005 20:58:13 -0500
Jim,
> Having the most ink you can put down on the paper is NOT always going to
> produce the blackest black.
I agree there is a point of diminishing returns in all RIP implementations.
> In terms on the Best rip/media type and ink
> comb, if you choose and print a few TIL values you will find that by
> measuring the strip and using the L* value of the shadow areas or even
> density, that the blackest blacks might be produced in areas that have less
> original dot density values. For example 350 TIL might measure a 20 L* value
> and a 300 TIL might measure a 15 L* value.
The way I go about linearization on this RIP it is that, I start at a
ridiculously low TIL value like 150% and work my way up from there. So far,
in all my frustrating linearization attempts, I have not been able to ink
the sheet enough to reach below an L* below 13 to 14, on semi-matte media,
without causing patches of 350% and up to drip, out of the printer, once
done with the linearization procedure. I may be able to cheat in Step 1 by
printing at 250% and wait a few minutes to let the ink dry, and thus lie to
the software. But, even after limiting the least possible the individual
channels in Step3, by the time I saved the calculated linearization and
print a characterization target, my heavy inking creates uneven patterns in
the darkest patches :(
The thing that I don't understand is that, in Step1, all the patches are
made of equal amounts of CMY and CMYK, all the way to 300% and 400%
respectively. So, if I pick 250% TIL out of the result, at that stage while
ALL the patches are fully dried, because I like the fact that the 400% patch
yields a value of L* 7, why on earth in the following Step, 100M+100Y and
100M+100C and 100C+100Y create little islands of inks of their own? I mean,
I simply fail to see the logic behind this behaviour.
And say that if I take a RIP like Harlequin with a ProofReady Plug-in, do a
custom linearization on the SAME printer and MEDIA, I can easily get L*< 8,
fully dried out of the printer. It beats me.
> In terms of the Best rip, one point to consider, is; have you choosen super
> fine for the screening(if it is available) ? The screening will change the
> amount of ink you initially print with.
Yes, of course.
> Jim Rich
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden