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Can't flatten transparency in a PDF

Explorer ,
May 08, 2023 May 08, 2023

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Hello There,

I have created book pages by illustrator, in where images are created by photoshop and they have transparencies. Before saving the ai files as PDF, I have done Select All>Object>Flatten Transparency. But in that PDF while I am anylyzing it by Print Production>Preflight then by a special preflight profile, made for targetting IngramSpark publishing standard. But unfortunately, I can see a lot of transpanencies there in the PDF. Then I went through Tools>Optimize PDF>Advanced Optimization and then cheked the Transparency option with High Resolution and then pressed OK.

 

After optimizing, I again have run the preflight profile and unfortunately found no improvement! The same transparency report.

 

I am not familiar with how to flatten transparencies in PDF sucessfully. Can someone guide me how to proceed?

TOPICS
Create PDFs , General troubleshooting , How to , PDF , Print and prepress

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1 ACCEPTED SOLUTION
LEGEND ,
May 09, 2023 May 09, 2023

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Ok, we might be able to make some or all of these messages go away. This preflight profile checks you have made a PDF/X-1a file, but you haven't. So go back to Illustrator and use Save as PDF. In the Save Adobe PDF box, look for "Standard". In the pull down select "PDF/X-1a:2001". See if that makes it all work.

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LEGEND ,
May 08, 2023 May 08, 2023

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You say you "can see a lot of transparencies". Can you take us through how you see them (either on screen or  in a report). Maybe a screen shot would help. This is a complex area and it can be difficult to interpret the information we are given by tools.

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Explorer ,
May 09, 2023 May 09, 2023

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transparencies.jpgexpand image

 

Here it is! Thank You.

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LEGEND ,
May 09, 2023 May 09, 2023

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Ok, we might be able to make some or all of these messages go away. This preflight profile checks you have made a PDF/X-1a file, but you haven't. So go back to Illustrator and use Save as PDF. In the Save Adobe PDF box, look for "Standard". In the pull down select "PDF/X-1a:2001". See if that makes it all work.

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Explorer ,
May 10, 2023 May 10, 2023

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transparencies removed.jpgexpand image

Hi Again,

Thankyou very much, that worked! Now only there is Excess ink coverage which is 245% which needs to be lowered down to max 240%. I have checked the Page#1, Black color of the text part are 60%,40%,40%,100%, so I assume that is not due to the black color of text. There is a subtle backgroun image on that page, I think color of that image might be 245% coverage. But is there any way to reduce down the Ink Coverage of Image in illustrator rather than editing it in photoshop?

 

 

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New Here ,
Jul 17, 2023 Jul 17, 2023

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I tried this option to fix my file so that I could flatten it, but I didn't see either "Standard" or "PDF/X-1a:2001." I tried just saving it as a PDF, but still no go. Next, I saved it down to the lowest possible version and, surprise...it worked! Thank you much for this advice.

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