Re: Print simulation with Pantone Spot Colors
Re: Print simulation with Pantone Spot Colors
- Subject: Re: Print simulation with Pantone Spot Colors
- From: Roger Breton <email@hidden>
- Date: Wed, 26 Jun 2002 08:36:46 -0400
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I9ve been creating a folder in Indesign 2.0.1 were the background is build
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up with two different Pantone spot colors.
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All pictures were separated in Photoshop 6 with the profile the printing
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office gave me.
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This profile was also tagged to the Indesign document.
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I printed the document on a Iris 2Print. The Iris is running in the graphics
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linear mode - linearised and profiled. In the IQ-Pro (v 4.0.1) dialog window
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for ICC the Iris Profile and the Offset-Printer profile (relative rendering)
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are set up (this is the way to set up a Print simulation in IQ-Pro).
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Everything looked very good and corresponded exactly to the following Offset
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print - except the pantone colors. On the Iris proof they came out much to
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bright. One of the pantone colors was 432 C.
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So I tried different methods for the spot colors.
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Once I set the Pantone color up as spot color.
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Once I set the color up as 23/3/0/77 specified in the solid to process
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folder.
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Once I measured the color on the Pantone folder with my Spectrolino with the
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Offset printer Profile and got a reading of 79/67/45/48.
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They all looked almost the same on the Iris print - to bright.
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So is there anybody who can tell me why the printer simulation with pictures
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works correct but not with spot colors?
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Josef
The way you are printing, you are stuck matching the PANTONE color in the
CMYK color space of your Source profile first.
If you setup the color as 23/3/0/77 it is optimal for your Offset-Printer
color space. Try sending that mix to the Iris without any conversion in your
Iris and see what the quality of the match is.
I think part of the problem is that you're using Relative rendering which
should shift all colors up in Lightness instead of Absolute rendering.
You could try to define the PANTONE color in Lab, withing InDesign. That
would make more sense than defining it in CMYK.
Ideall, you need to have the color sitting up in Lab in your RIP and you
want the RIP to intercept the PANTONE name and do an AbsCol rendering from
Lab to the CMYK of your Iris proofer. That would give you what you want.
Regards,
Roger Breton
Laval, Canada
email@hidden
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