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MickyG Member
Member

FFC setting to treat 4 colour grays as a tint of black

Hi all,

There is a preflight fixup in Acrobat called Convert color to 4c for digital printing. When I use this in Acrobat to convert RGB to CMYK, it works as expected - 4 colour grays are retained, but if I use this profile in FFC it treats all grays as a black only grays and just provides a percentage of K.

Why is this happening? How can a have this work in FFC as it does in Acrobat?

 

Thanks

Mike

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3 Replies
FreeFlow Production Workflow Moderator DavidU54339-XRX
FreeFlow Production Workflow Moderator

Re: FFC setting to treat 4 colour grays as a tint of black

I cannot find the Convert color to 4c for digital printing fixup on my version of Acrobat Pro. Could you add the fixup to the issue? When I run Convert to CMYK, keep spot colors (Coated FOGRA39).kfp, my CMYK grays are converted to CMYK grays (not K only). I am using FFCore 5.1.0.7.

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MickyG Member
Member

Re: FFC setting to treat 4 colour grays as a tint of black

I have updated FFC to 5.1.0.7 and I am still experiencing the same issue even with Convert to CMYK, keep spot colors (Coated FOGRA39).kfp.

Though I have noticed it happens with only some grays, not all.

Please tell me how I can upload to you the KFP file and a PDF file to test. I cannot see an option to attach files on here.

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FreeFlow Production Workflow Moderator DavidU54339-XRX
FreeFlow Production Workflow Moderator

Re: FFC setting to treat 4 colour grays as a tint of black

Micky,

It appears that forum users (other than the moderators) do not have the ability to attach files. I've tried in the past to get this fixed (to no avail).

Instead you can send me the kpx file to david.robinson@xerox.com. It would also be helpful to have a PDF that contains the grays that are causing the problem (if the PDF contains sensitive customer information I understand not sending it).

Dave

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