ImagePrint options
ImagePrint options
- Subject: ImagePrint options
- From: "DuWayne" <email@hidden>
- Date: Mon, 2 Dec 2002 03:59:58 -0500
Roberto Michelena Wrote
- so there's a non-postscript version that is RGB only, and a postscript
version (double the price)...
Ans: No, The ImagePrint Postscript option cost $500-$1000 depending on size
of printer - Jaws makes the money on this not Colorbyte.
That one ought to take in CMYK data too, as
postscript can contain it.
------ Ans:It has no problem with CMYK data, RGB, mixed Data or embedded
profiles 3 levels deep in postscript.
Will it convert the CMYK to an internal RGB
colorspace then, and carry on it's usual RGB colormanagement? Or will it use
a Lab or XYZ intermediate colorspace, something that would clip nothing from
your CMYK colorspace?
----- Ans:It would convert CMYK to Lab based on your input profile or
embedded profile and then Lab to your output profile(which could be CMYK,
RGB --- or up to 12 channels [I believe - haven't need to check more than 4
even with CMYKLcLmOG printing])
Can postscript (CMYK) version can do things like pure black preservation
(for texts)?
-----Ans: It will use good color management based on your profile. There is
no check option like BestColor has to drive text to black. I don't think the
option is needed because if the file text has undercolor you probably want
to know it before it hits press etc...
So canned profiles are the way to go with this rip; is there some sort of
linearization feature to bring your printer in line with their reference
one?
-----Ans: The is no linearization feature except for linear ink reduction
from 100%. Which is normal not need unless you have really whacked printer
or a very low TIC media. Canned profile are never the way to go - but it
depends on the printer model.
ImagePrints canned profile are very, very good but a custom is always
better. Many people are very happy. ImagePrints canned profile are special
in that they have different lighting options that are created from spectral
data. Gretag Profilemaker has a similar option but not as complex. You can
also ways have ColorByte create a custom profile for you or a custom
"PrintRecipe" for your media if your into true perfection. I know customers
that have done both and are very happy.
I use Profilemaker 4.1 with RGB 918 patches and have front side tables of
915 patches under 1.2 delta E and a few hot colors (hot pink) that hit 2-3
Delta E. They could be measurement errors that I don't bother to double
check. Depends on media but they tend to be on the edges of gamut or spikes
in my OG that will be compress down anyway. A 15 minute profile works for
me(4 different Roland printers/6 ink combinations/5-9 resolutions/40 +
medias = 4,800+ profiles needed - not to mention 5 new models for next
year). You can play with CMYK Profiles for TIC, Start,Stop all you want -
ImagePrint will use CMYK Profiles correctly. I really don't believe that an
average person can build a CMYK profile figuring out TIC, Start, Stop, wide,
narrow etc. on an previously unknown media and get even reasonable prints.
A lot of the other rips on the market prove it - just look at there canned
profile output and dozens of options to change that completely invalidate
the canned profiles.
They only way to really have perfect printing is to have a have custom
"print recipe" done for each media you will use (at least each family) and
custom profiles done for every media you use. Both made by someone who knows
what there doing.(less than 50 people in the world). It will cost a few
bucks.
No matter what kind of profile you use or what software to generated the
profile -- An ICC Profile will not undue the damage that's done by a bad
driver or bad "print recipe". We all have lots of hours in that prove this..
DuWayne Rocus
Omniscience, Inc
South Florida Roland Dealer
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