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This is Acrobat specific and something Adobe hasn't addressed in at least 5 years.
There are TWO different areas with the "ink manager" menu, complete with the "convert to process" feature. Except "convert to process" only works in ONE of those menus - and sometimes not even then. It will SAY it worked and show it to you in output preview but those spot colors are still there.
The "color management" ink manager works most of the time but the one under "output preview" doesn't do anything
Regrettably, the functionality of the Ink Manager is not clearly documented. The Ink Manager's role is not to convert spot colors to process within the PDF file, but rather, to provide instructions as to how whether / how the spot colors are to be printed from Acrobat. In other words, if your PDF file has a spot color defined and you specify that it is to be converted to process colors, when printing the PDF file, Acrobat's print subsystem will convert all content in that spot color to process (
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herb4​
Please don't add items to a thread that are really off-topic from the original thread. I am branching this to a new topic entitled Ink Manager Conversion to Process Colors.
- Dov
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Regrettably, the functionality of the Ink Manager is not clearly documented. The Ink Manager's role is not to convert spot colors to process within the PDF file, but rather, to provide instructions as to how whether / how the spot colors are to be printed from Acrobat. In other words, if your PDF file has a spot color defined and you specify that it is to be converted to process colors, when printing the PDF file, Acrobat's print subsystem will convert all content in that spot color to process (based on the spot color's internal alternate color space, either CMYK, RGB, or preferably LaB) for printing. If you close the PDF file, that conversion information is not retained in the PDF file and if you wish to do a similar operation again, you need to go to the Ink Manager and respecify what you want as process for printing.
If you permanently wish to convert spot colors, the Acrobat Pro DC Convert Colors and Preflight tools may be used to permanently convert spot colorants to process, in the first case globally and in the second, more selectively.
- Dov