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Color Combiner produces different results than Color Matcher when converting spot colors to process


Product

  Prinergy Connect 2.1 ; Prinergy Direct 2.1 ; Prinergy Access 2.1 ; Prinergy Powerpack 2.1 ; Prinergy Satellite; Prinergy 2.2

Platform

 

Operating system

 


Error

 

None.


Symptoms

 

When converting spot colors to process color on proofing output (imposed or loose page), the colors are quite a bit darker or even a different hue as compared with converting to process during refine using Color Matcher.


Cause

  Because Color Combiner runs after the RIP, dot gain calibration curves don't get applied to the CMYK data that results from converting the spot to process. This results in too much ink on the paper and the results look too dark and/or color-shifted.

Solution

 

Turn off Color Combiner in the Render tab of the proofing output process plan.

Note: This forces the RIP to do the color conversion, however the RIP can only handle composite data and spots defined in /Separation colorspace. Use of setoverprint operator may not work, nor will DeviceN objects or indexed DeviceN objects.

Permanent fix:


See also

 


Keywords

 

color, proofing, spot color


Technical contact(s)
 

Ken Lew

Submitted by
 

Ken Lew

Date submitted
 

12 Dec 2003


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