CMYK barcode problem

[mykee]

Hi all,

I have a problem with color profile, and need a tip for printing.

I have a project with ISO Coated v2 ECI 300 or Coated_Fogra39L_VIGC_300 color profile and a CMYK barcode in EPS format. This is a book cover and for printing need barcode in 0,0,0,255 black, and without embed ICC profile.

When I insert barcode to project, automatically converted lower black, but these profiles include full K support.

 

If I open barcode with double click, and assign (not convert) to correct ICC profile, then I get correct values (with strokes?).

 

I tested this value with Just Color Picker in CMYK pick, but I get different value:

 

And after PDF export get a new value again:

 

Here is my PDF export settings, and I tried "Convert image color spaces" option turned on or off, but no helped.

 

How can I set PDF export for leave barcode in original 0,0,0,100 format?

If open my PDF in Affinity Photo, then Affinity picker see 0,0,0,100 in barcode... Is this correct? (I haven't Adobe Acrobat Pro for checking.)

[Dazmondo77]

1 hour ago, mykee said:

0,0,0,255 format

Do you mean 0,0,0,100??? - If I was having these problems, i'd open the liked eps and convert to curves and copy paste into the actual artwork and make solid black, although assign should work as expected - have you checked the values in Acrobat? 

[mykee]

19 minutes ago, Dazmondo77 said:

Do you mean 0,0,0,100??? - If I was having these problems, i'd open the liked eps and convert to curves and copy paste into the actual artwork and make solid black, although assign should work as expected - have you checked the values in Acrobat? 

Thanks, I fixed, 0,0,0,100 is correct of course.

I didn't check in Acrobat, but press can, and call me, this barcode not include K value only with 100. And tried open embedded file (then I get curves), assigned to ICC profile, close that, and after export checked picker... But Affinity picker give back different value as Just Color Picker... What is correct?

[Dazmondo77]

Not familiar with Just colour picker - but I suspect it works by interpreting RGB values from your screen and not from within the apps - I would guess you'd be safe to go with the values from Affinity - but I can't imagine not checking seps and standards conformance before sending to your print service provider.

You could always open your pdf in photo and view the colour values

[Joachim_L]

Maybe you should just upload the barcode? Did you ever get correct CMYK values with Just Color Picker? I downloaded this tool made a M100Y100 rectangle in APu and checked with JCP and it told me that it is M100Y94K9.

[mykee]

@Dazmondo77 Thanks for great help, and I will believe for Affinity, and need plus steps if I use a barcode:

• open code (as embedded or not)
• assign to same color profile as cover
• after PDF export will check in Photo too.

@Joachim_L Thanks, and I think JCP is convert CMYK value from RGB (as said Dazmondo), because under RGB working perfect. I make barcodes here, this online tool can make 0,0,0,100 CMYK barcode to EPS: https://www.free-barcode-generator.net/isbn/

[Joachim_L]

@mykee I made a test with your barcode generator. Why not:

1. Generate your code.

2. Instead of downloading open it with AD or APu directly.

Benefit: For me it opens right away with the correct CMYk colour profile and then I just have to copy the elements.

[mykee]

@Joachim_L

Yes, it's great trick, because barcode no use any ICC profile, and when open, Affinity will assign a profile, and after barcode copy will this profile move with this. I used place before, and program no assigned profile to barcode, and converted to other color.

Great thanks for tricks, I will use your steps!