Trouble at the printing press

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Diederik Corvers's picture
Joined: 9 Oct 2004 - 2:19am
Trouble at the printing press
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I got this image from the printer of a page using my typeface SeriuosSans. At the press some characters magically disappeared, while they were correctly displayed in the pdf and in the proofing print. I suppose it has to do with my font, but does anyone have any idea what could have caused this?

Theunis de Jong's picture
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Joined: 22 Apr 2008 - 5:06pm
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Ouch!

What software did you create the font with? Check winding order and -- I think I've read this as well -- if there are two exactly overlapping copies of the glyphs.

George Thomas's picture
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Joined: 24 Apr 2000 - 7:46pm
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What Theunis said about the exactly overlaid duplicate path is the most likely culprit. I have seen this happen before with Adobe's Times Ten font back in the nineties.

Diederik Corvers's picture
Joined: 9 Oct 2004 - 2:19am
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I made this in Glyphs and Fontlab. No overlapping shapes. In the revision I checked all directions of the outlines; there were some irregularities but not exclusively to the charaters affected in the image… Right now I am testing: I hope the corrected outlines will do the trick. Never seen this happen before.

George Thomas's picture
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Joined: 24 Apr 2000 - 7:46pm
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What type of font is it: TrueType or Postscript (CFF)?

I assume the printing press is full digital. Was the proofing print done on a device different from the actual press? If so, is the proofing device controlled by a software or print server different from the press?

Diederik Corvers's picture
Joined: 9 Oct 2004 - 2:19am
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The font is OTF (postscript flavoured), the printing press is offset, the proofs were made digital. This is an insert I made in a magazine production of someone else; I do not know the printer's specifics, but proof and execution were seperate. My big question remains: if it is in the font, what did I do differently/ wrong from the fonts I produced earlier which never gave any trouble of this kind? Riddle me that…

George Thomas's picture
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Joined: 24 Apr 2000 - 7:46pm
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I kind of doubt that there is anything wrong with your font.

You say they are printing offset, so:
1. They are using film to make the plates, or
2. They are going direct-to-plate.

So I believe the problem might lie in the imagesetter or printer software since your proofing process came out correct. It may be that they are using a Postscript emulator rather than true Postscript, which can certainly cause problems.

Riccardo Sartori's picture
Joined: 13 Jul 2009 - 4:20am
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A workaround would be "flattening" the outlines before printing: http://typophile.com/node/76217#comment-439419

Micha Mirck's picture
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Joined: 12 Sep 2006 - 3:26am
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have you tried to uncheck "use subroutines to compress outlines in CFF table"

Ramiro Espinoza's picture
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Joined: 1 Aug 2002 - 9:32am
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Hi Diederik,
Did you find the source of the problem?
There are scripts that can easily spot if there are overlapping contours.