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100% black is not being right for printing and coming out as 4 colours when exported as a pdf

Forum|Forum|6 years ago
June 25, 2019
返信数 11.
16134 ビュー

I am facing a big problem about the 100% black is not being right for printing and coming out as 4 colours, from my InDesign document when I export it as a pdf. My swatch for the black text in Indesign is set at C=0 M=0 Y=0 and K=100, which seems not to work as100% BLACK after I have export it so pdf? Please can anybody help me, so I can get 100% black text in my PDF?

The only thing I want AFTER I export the pdf, is that the BLACK TEXT are 100% black, not a 4 colour rich black, in the exported pdf. I also have the same issue in Illustrator? So what is going on?

Thank you so muh!

100% black is coming out as 4 colours as pdf

このトピックへの返信は締め切られました。

解決に役立った回答 haneadino

I think I have to uninstall Acrobat DC. And reinstall it again

Hi everybody!!!

The problem was my Acrobat!!

I uninstalled it, and then I have reinstalled it and now it works!!!! See video: Loom | Free Screen & Video Recording Software

Thanks a lot everybody for your help!!!!

I don't know if this is a bug, but 2 others of my friends had the same problem. So I have to contact them and ask them to uninstall the Acrobat.

Again Thank you!!

N

Niet beschikbaar

Known Participant

Same problem here. Exporting to PDF changes greyscale JPG images into rich black in the PDF.

Solution: do not downsample the PDF export. Somwhow the downsamping algorythm does not understand a professional CMYK workflow anymore.

This is what you get if you let programmers with limited print production knowledge screw around with critical file integrity algorythms, I guess.

This makes me just so frustrated. I hate these tools more every week.

rob day

Community Expert

Same problem here. Exporting to PDF changes greyscale JPG images into rich black in the PDF....let programmers with limited print production knowledge screw around with critical file integrity algorythms,

Hi @Niet beschikbaar , There have been no changes with InDesign’s color management in the latest versions, and I can‘t replicate your problem.

Have you confirmed that the placed JPEG is in fact a Grayscale in Link Info, and are you exporting with either No Color Conversion or the Output Destination set to Document CMYK? Any of the default PDF/X presets would do that. Here I’m using InDesign CC2024 on MacOS Ventura, Exporting to PDF/X-4 with the Destination set to Document CMYK with the default Compression (the 678ppi image will be sampled down to 300ppi)

In the exported PDF the image is on the Black plate:

T

Test Screen Name

Legend

Equally, though, Acrobat isn‘t involved in the making, and I have never heard of the object inspector getting confused this way (though some versions do give incorrect plate breakdown for separations). I suggest the original poster share the PDF file they are viewing which shows RGB in the inspector, and the exact Acrobat version number They are using. We may have some of this, but as I‘m on a train, much shared info isn’t available to me.

rob day

Community Expert

I suggest the original poster share the PDF file they are viewing which shows RGB in the inspector, and the exact Acrobat version number They are using. We may have some of this, but as I‘m on a train, much shared info isn’t available to me.

She already did that in #33. I see the text in the files she posted as all CMYK.

Also, the file she shared passes PDF/X-4 compliance in Acrobat's preflight. CMYK text converting to RGB should simply not be possible in a verified PDF/X-4.

My Acrobat version running on OSX 10.13.6:

H

haneadino作成者

Inspiring

Here is my Acrobat version: https://prnt.sc/o8azy4

I also try to preflight as you did : https://prnt.sc/o8b1al and no problem found

T

Test Screen Name

Legend

You may have answered this already but I will ask anyway. What is the transparency blend space for this document in InDesign?

rob day

Community Expert

You may have answered this already but I will ask anyway. What is the transparency blend space for this document in InDesign?

Have you inspected the PDF the OP posted? When I inspect it, all of the color is DeviceCMYK, which is expected when the PDF/X-4 preset has the Destination set to Document CMYK.

Somehow haneadino is seeing the text as RGB in Acrobat. It is simply impossible for a CMYK [Black] object to get converted to RGB using the PDF/X-4 preset no matter what blend space is used. With X-4 transparency is never flattened, and RGB profiles are not available in the Color Conversion Destination list. If we are in fact looking at the same file, something seems to be wrong with her Acrobat installation.

Gusgsm

Inspiring

Just an idea: What happens if you place the PDF inside another InDesign document and you then preview the separations in InDesign) not in Acrobat)?

Gusgsm

Inspiring

The default PDF/X-4 preset where the Color is set to No Color Conversion never converts a CMYK 0|0|0|100 black no matter what Color Settings are used.

If you choose a different color profile from the output intent, you'll see a separation preview in which the black seems to be rich black but it is not (see below, Acrobat XI at my place right now).

That seems to point to corrupt preferences or caches.

Not the strangest of things, isn't it?

rob day

Community Expert

If you choose a different color profile from the output intent, you'll see a separation preview in which the black seems to be rich black but it is not (see below, Acrobat XI at my place right now).

That's because you have chosen a Simulation profile that conflicts with the Output Intent. The black hasn't actually changed, the Separation numbers are showing a simulated conversion from the ISO Coated Output Intent to FOGRA.

The reason I originally suggested the default PDF/X-4 preset is that it would normally be impossible for a black conversion to happen with the default settings (No Color Conversion). When you open a PDF/X-4 into Acrobat the Output Intent is used as the Simulation profile, so there is no conflict and the Separation numbers remain unchanged.

The OP has modified the PDF/X-4 preset by changing the Output Intent to SWOP, which isn't her document’s assigned profile. But even that shouldn't cause a black conversion, so trashing the preferences might be needed. Also saving as an IDML in case the document is corrupted.

Willi Adelberger

Community Expert

In the Export Settings in Output make sure that you CMYK Keep values is set. (Do it also in your Color Settings)

Gusgsm

Inspiring

One last try, pretty please:

1. Open InDesign and with no document open: "Color Settings", set US Web Coated SWOP. as CMYK working space. As Colour management policies, set CMYK: Preserve numbers (Ignore linked profiles). Check the three "Ask when..." options.

2. Open the conflictive document. If asked anything, choose preserve embedded profiles.

3. Open the separations in the Output panel and check that the black text is still black (CMYK: 0/0/0/100)

4. Edit -> Assign Profiles, CMYK assign CMYK working color space (should be US Web Coated SWOP. as CMYK).

5. Edit -> Convert to profiles, from CMYK source profile (whatever it is) to Destination space... CMYK profile Working CMYK (US Web Coated SWOP).

6. Save.

7. Export as PDF, choose PDF/X-4 (the exact taste 2008 or 2010 depends on the version of your InDesign and is not very relevant to this issue, IMHO).

8. In the PDF export dialogue, go to the Output zone and choose Color conversions; Convert to destination (Preserve numbers).

9. Export.

10. Go to Acrobat Pro (you already have it, haven't you?). Open the PDF.

11. In tools, go to Print production, go to preflights profiles and choose one of the PDF/X compliance that verifies (not "convert", "verify") PDF/X-4 level. Push "Analyze" button and check that it is PDF/X-4 compliant (the profile now is irrelevant, we just want to check that the PDF is really a PDF/X-4).

12. In Tools, print production (still in Acrobat), go to Output preview. The simulation profile offered should be US Web Coated SWOP. Check that the black text is CMYK 0/0/0/100.

If, after this walkthrough, your text still seems to be in rich blak (could happen. I managed to do that myself)... please choose as Simulation profile US Web Coated SWOP. Any other CMYK simulation profile will perform a color conversion (even for preview) and they are usually passed through a Lab space that converts black ink into rich black.

Printing or simulating with the proper profile should show 100% black properly as pure black ink.

Otherwise... the smart and dirty solution to overcome this is what Stephen_A_Marsh recommends: use Acrobat to solve the issue for the moment. But then I guess that although something seems wrong with the installation of your computer or the settings of your Adobe Suite, the culprit will be some tiny and maddening detail in your workflow. Being there, done that

Best regards

rob day

Community Expert

If, after this walkthrough, your text still seems to be in rich blak (could happen. I managed to do that myself)... please choose as Simulation profile US Web Coated SWOP.

If you watch the OP's 2nd video in #11, her document's assigned CMYK profile is FOGRA39, but the PDF/X-4 Output Intent is defaulting to US Web Coated SWOP. This is not normal. The default PDF/X-4 preset's Output Intent always defaults to the document's assigned CMYK profile. That seems to point to corrupt preferences or caches.

The default PDF/X-4 preset where the Color is set to No Color Conversion never converts a CMYK 0|0|0|100 black no matter what Color Settings are used.

Stephen Marsh

Community Expert

You need to get to the bottom of this issue, there is no doubt about that!

However, if you are faced with a deadline and have not come to a resolution and have to be pragmatic, my post #5 details how one can correct rich black text and vectors using Acrobat Pro and make them "CMYK Black" i.e. K only.

Stephen Marsh

Community Expert

Appearance of Black: