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Re: but do I have to work in rgb?
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Re: but do I have to work in rgb?


  • Subject: Re: but do I have to work in rgb?
  • From: Jan Steinman <email@hidden>
  • Date: Sat, 4 Nov 2000 23:36:56 -0800

From: email@hidden (Lee Blevins)

The response from the bad Roland demo was the files were in cmyk.

That explains a lot!

Is there anyway I can work in cmyk and have a good quality large format
inkjet output?

Sure, if you're using dye based ink. Correct my memory if I'm wrong, but I believe you said the demo was using the Hexachrome ink set. If you're trying to print to Hexachrome from CMYK, the colors simply aren't there!

The HP I saw printing was working in cmyk and it was making very nice
output.

Again, correct my memory if wrong, but I believe you said the HP was using dye. You've got to compare apples with apples! ANY optimized printer will produce better output than the BEST printer than has been pessimized! :-)

1) Dyes are bright, but don't last long.

2) Pigments last long, but are dull.

3) Hexachrome inksets expand a pigment gamut to almost that of dyes, but you have to feed it RGB, because CMYK clips the R-G data, which is what the extra two inks are for.

--
: Jan Steinman <mailto:email@hidden>
: Bytesmiths <http://www.bytesmiths.com>


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