Comments on: InDesign’s Trapping in a Composite PDF

By: andre

andre — Wed, 07 Oct 2009 18:01:28 +0000

I have done a test and it works pretty well. Just as a matter of info I had a file testing the overprints I had made. It ignored trapping on the overprints. Any ideas why?

By: Trapping in Illustrator - PrintPlanet.com

Trapping in Illustrator - PrintPlanet.com — Thu, 11 Jun 2009 16:57:40 +0000

[...] create a PDF using the print function (it’s not possible with Export). This method is explained in an article posted on InDesignSecrets.com. It uses a powerful trapping engine inside InDesign. If you want to [...]

By: David Blatner

David Blatner — Tue, 29 Apr 2008 23:03:47 +0000

Benjamin, I’m sorry but I have no idea what you may be doing wrong. When you print separations, you should get one color per page (cyan on one page, yellow on another, etc.). That’s the whole point of separations. Are you printing seps from InDesign or from Acrobat?

By: Benjamin Jancewicz

Benjamin Jancewicz — Tue, 29 Apr 2008 16:34:09 +0000

Any ideas? Or did I stump ya?

By: Benjamin Jancewicz

Benjamin Jancewicz — Thu, 10 Apr 2008 04:16:38 +0000

I did that, but when I print, it only prints out one page (but with 4 colours bars and CMYK listed along the bottom).

By: David Blatner

David Blatner — Wed, 09 Apr 2008 22:17:37 +0000

Benjamin, you should be able to choose Separations from the Color pop-up menu in the Output pane of the Print dialog box.

By: Benjamin Jancewicz

Benjamin Jancewicz — Tue, 08 Apr 2008 21:03:55 +0000

Does anyone know how to PRINT the separations from a printers so I can look at them? I’m talking C on one page, M on one page, etc etc.
When I try to print separations from the dialogue box, the printer spits out one sheet with the colours listed on the bottom.

By: Ivan Doganov

Ivan Doganov — Wed, 12 Dec 2007 19:32:19 +0000

David and Thierry, you can’t trapp EPS files freely, this is speciffic to the file format and is not an InDesign bug. EPS means ‘Encapsulated PostScript’, so, as it is encapsulated, InDesign is not allowed to change anything in it by definition. The EPS files can carry in not only images, but also speciffic instructions, screen dot shapes, or, for example, different color plate screen angles, and therefore, this is feature, not bug. This is documented in ID help.

By: David Blatner

David Blatner — Tue, 31 Jul 2007 00:06:17 +0000

Thierry, you are correct that this doesn’t appear to work with imported EPS files (at least in CS3). The same image saved as PDF and EPS works with the former and doesn’t with the latter. Wow. That may be a bug.

By: Thierry

Thierry — Mon, 30 Jul 2007 06:36:32 +0000

It’s a very cool option and I use it every time I need a trapped composite PDF but I have a little question about it. It doesn’t work with imported eps files but seems to work with native AI files (with PDF compatibility, of course). Can you confirm this?