Exporting RGB, CMYK and Grayscale to print pdf
I have been asked to start a new thread, so here it is again. I am using ID CC2020 15.0.2, and Windows 10. I am trying to export from ID to a pdf for commercial print on Indigo presses. - RGB color (Adobe RGB profiles embedded), plain K b/w (images scanned from b/w negatives GRAYSCALE with gray gamma 2.2 embedded) and CMYK process colours. None of the ID output settings produce the same result as converting the RGB into CMYK in PS and substituting the new colour files before exporting the whole work with no conversion. This method kept the printed K at the correct density.
When exporting using the RGB photo files, CMYK process colors, and the GRAYSCALE files, the grayscale is washed out if the export output is 'convert to destination' It mattered not which PDF-X was selected, or none, or what destination profile (ISO coated V2 300% ECI) was set, or preserve numbers, or ignore profiles, or not. The color - both RGB images and CMYK process colour - were converted just fine, but not the b/w K files which were rendered as a shade of grey. I tried sending a test pdf unconverted which went through the rip converting both RGB and CMYK colour correctly, but the b/w was washed out K again. Does anyone have a fix for this?
AdChoices