100% black converting to rich black in Acrobat DC but not Acrobat XI

[1234564816218]

Hi there

I am having a problem with Acrobat DC seemingly converting Indesign's default black (c0 m0 y0 k100) to a rich black. I have wasted a couple of hours searching online and trying different settings (including the Appearance of Black preference in Indesign) but cannot get Acrobat DC to behave like it did/should.

The problem is compounded by the fact the PDF's display as expected in Acrobat XI or in Acrobat DC on a different computer altogether.

Any help much appreciated!

Many thanks

Problems are with:

Mac OS X 10.10.5

Acrobat DC 2015.023.20056

[1234564816218]

This is still happening and no solution found yet!

[Test Screen Name]

How exactly do you determine that the conversion has happened?

[1234564816218]

Hi - apologies for my delayed reply.

Hopefully the attached screenshot will explain.

This shows the same file open at the same time on the same Mac with the Output preview in both Acrobat XI and DC - the difference is that in DC black is showing as some kind of rich black yet in XI it is showing as 100% black only (you can't see it because I have switched the black plate off.

Any help appreciated - especially if I'm doing something stupid!

Thanks

[1234564816218]

Still just me having this issue?

[Test Screen Name]

I didn't understand it when you posted the screen shots, but I wonder if it is actually DC on the left and XI on the right?

[1234564816218]

Yes, thats right. The screenshot shows the same PDF open in DC on the left and XI on the right.

Its hard to explain but the screenshot is showing the same PDF open in DC (left) and XI (right).

In both I have turned off the black plate (see the lower highlighted sections)

Yet in the DC version the text is still (incorrectly) visible while in the XI version the text (correctly) disappears when you switch the black plate off. (see the upper highlighted sections).

Its driving me mad so any help greatly appreciated.

[Stephen Marsh]

Do you mean display or conversion?

Have you performed a colour conversion in Acrobat? Did you convert colours when creating the PDF?

Change from “separations” to “object inspector” and click on the text in both to verify that this is not just a “preview conversion” issue (I am guessing not as I can see output intent listed and not simulation profile).

[1234564816218]

I suppose I mean display as it appears correctly elsewhere. Not performed any conversion.

[nicoletoro]

Hey, I know this is old, but I couldn't find the other post from Feb 2018.

This happened to me. It had nothing to do with PDF export settings, the color conversion settings, the color profiles. Nothing.

It's the Transparency Blend Space under Edit. It was set to RGB instead of CMYK. Switch it. Re-export. Presto.

[cyrill]

We experience exactly the same problem with Acrobat 19.021.20061 on two different Macs in the studio. One shows the text as rich black the other as 100K as is's supposed to be. Does anyone know a fix to this problem?

[1234564816218]

I'd forgotten all about this until I got a notification of your reply just now.

I never managed to fix it – I just went back to using Acrobat XI instead. Sorry thats not much help!