[Framers] Overprint Not Working in FrameMaker 10 and Acrobat Pro 2017
Mike Wickham
info at mikewickham.com
Thu Apr 15 11:04:42 PDT 2021
Dang, my graphics didn't come through and I just found that I need to
link them. I will repost with links.
Mike Wickham
On 4/15/2021 11:58 AM, Mike Wickham wrote:
> I set all four colors (CMYK) to process and overprint. Using Save as
> PDF (not print to Adobe PDF).
>
> Below, you can see the PDF with all four plates turned on in Output
> Preview. It is easy to see that yellow is overprinting. It turns green
> on top of cyan, and easy to see that black is, too-- although not so
> much in this GIF. The black is darker over the cyan, wit the "E"
> showing in two colors, as expected with overprinting. The cyan and
> magenta plates, though, are not correctly overprinting and have
> letters of unchanged color where they are supposed to overprint:
>
> CMYK
>
> Below is the PDF with the black and yellow plates turned off. You can
> see that they were overprinted. The full cyan plate remains:
>
> CM plates only
>
> Below is the image with the magenta plate turned off. You can see that
> it knocks out the cyan plate, even though all colors are set to
> overprint:
>
> CYK only
>
> And below is the cyan plate turned off. It knocks out the yellow
> plate, even though all colors are set to overprint:
>
> MYK only
>
> So there is definitely some error in the process. Overprinting works
> with black and yellow plates, but not cyan and magenta. The Object
> Inspector in Acrobat works similarly to your Quite Revealing. It
> accurately shows what the PDF presents, i.e. overprint=true for black
> and yellow, but false for cyan and magenta. I confirmed this by
> printing to a Xerox Phaser CMYK printer to be sure it wasn't a display
> artifact.
>
> I cannot figure out why overprints are only flowing to the PDF for two
> of the four plates! All four color definitions are set to Process
> Overprint in FrameMaker.
>
> Mike Wickham
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