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This is a problem of not accurate registered printing, colored black and missing overprint attribute.
- Use for black only the given Black in brackets, don't reduce the density, use normal blending, no transparency, then it will overprint automatically.
- Don't use a self mixtured black for this purpose, even if this black is 100% K only.
- Don't use Register Color.
File size will depend on how you built the file in InDesign. If your cover is composed of mostly text with a gradient built within InDesign, then it doesn't surprise me that the file size is small because there are no images which is what makes up the bulk of the file size in a PDF. You mention that your PDF has a resolution of 978 x 666. How are you determining that? For the white halo issue, Willi is correct. It's an issue of the black knocking out of the orange and you're seeing some of the white peeking though. Make sure that you use the default [Black] swatch in InDesign for the type. All type with this swatch applied will overprint by default which is what you want. My guess is that maybe you created your own black swatch? In which case the black will not overprint by default. You can verify that the black is overprinting after you make the PDF by opening it in Acrobat, going to the Print Production tools panel and choosing Output Preview. When you uncheck the black separation, your orange background should be solid.
I was finding the file size by right clicking on my exported PDF, clicking "get info" and looking at the resolution size. I set my document measurements in InDesign to be 6in x 9in.
I already checked my text colour too and it's definitely Black, not Registration black.
Is there a way to see the Output Preview in the regular Acrobat Reader? I'm looking for Print Production and it's not there.
Hi Will... I already am doing all of those things. Is there anything else that would cause the overprinting? Could it be that I'm using a gradient? So if I use a solid background, will it be different?
I found something in Preferences. There's an tab called Appearance of Black, and the On Screen and Printing/Exporting options are both set to "Display all Blacks as Rich Black"
And then there's a check box called "Overprinting of Black" that has a box checked for "Overprint [Black] Swatch at 100%"
Should I uncheck that? Or change anything else here?
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When you convert the PDF, did you select keep numbers (ignore profile) in the CMYK policies in COlormanagement (Edit > Color Settings) as it should be done? Or did you convert your CMYK to a different Output Profile which you should avoid. (And use RGB images in InDesign!)
Looking at those color settings now, under the CMYK Color Management Policy it's on "Preserve Numbers (Ignore Linked Profiles)"
Also, in case any of this is relevant:
Engine: Adobe (ACE)
Intent: Relative Colorimetric
and "Use Black Point Compensation" is checked.
Oh and I also found this, does any of this apply? It mentions something about a white line around text, which seems to be what happened to me, but it also says to adjust the black settings which is exactly what I've been advised not to do here.
Thanks for your help, I really appreciate it.
Oh and in the export settings for the PDF/x1a, the Output color conversion is on "convert to destination (preserve numbers)"
Output Intent Profile Name is Document CMYK - US Web Coated SWOP v2