Bad Color Separations.

[Danny_Coppens@adobeforums.com]

When I send cmyk-separations to the imagesetter and other postscript printers the spot-colors converted to cmyk are printed incorrectly. The pdf-file is ok (checked with Pitstop).
If i look at the seperation window in acrobat it looks fine but on my postscript printers and imagesetter a color like orange pms021 prints like 90 CYAN 80 MAG 80 YELLOW and 80 BLACK.
If we import the same file in quark and print the separations the result is ok.

A second print problem.
Black and white halftones and spot-colors.
Acrobat prints the b/w halftones as cmyk separations. In the separation preview it is ok but if i look at the samll separation window in the print window the b/w halftones becomes cmyk. The result is a bad black plate. I think it is a color-setting, but i don't find it.

Thank you for helping,
Danny Coppens

[Nathan_Strong@adobeforums.com]

I can help you with the second problem:

Trust the separation preview (Advanced > Separation Preview). The Advanced print preview (File > Print > Advanced) will PREVIEW the separations incorrectly when you turn the inks on/off, although they should in fact print correctly.

You can force the advanced preview to look correct by turning on Separation Preview (Advanced > Separation Preview), and select File > Print while Separation Preview is open.

Nathan