[xep-support] ps vs. pdf

Andrzej Jan Taramina andrzej at chaeron.com
Fri Dec 5 15:50:04 PST 2003


Alexander:

> 2. PDF files produced by our PDF generator conform to PDF spec 1.3.
>    As far as I understand you can view those files in Acrobat without any
>    problems and print it, except for some printers. I believe this is the
>    problem of those printers or Acrobat/printer interaction rather then of XEP
>    itself. If you can provide us with detailed information about what exactly
>    in our PDF makes those printers choke we may consider implement some kind
>    of workaround for them if we find it feasible.

We ran into similar problems where the generated PDF's would not print at all 
on postscript printers (various models of HP printers).

At first we thought it was the images we were using, but we weren't using 
GIF's (which were known to cause some problems on postscript printers), only 
JPG's.

Doing some Preflighting of the generated PDF, it showed that the embedded 
TrueType fonts were at fault in our situation.  We were using the Minion-
Regular TTF font, and the printers were barfing on the postscript that 
Acrobat would generate when we tried to print the documents.  Note that 
Acrobat opened and displayed the PDF just fine, even though printing broke.

Our solution was to change over to a Type 1 version of the Minion-Regular 
font, which solved our problem.

Might be worth looking into what XEP was doing what that particular TrueType 
font that caused Acrobat to generate incompatible postscript code.

I would also recommend the use of a good PDF Preflighting tool for anyone 
that has similar problems.  The new Acrobat 6.0 now has preflighting 
capability built in and can be a very good tool in helping to identify the 
source of such problems.


Andrzej Jan Taramina
Chaeron Corporation: Enterprise System Solutions
http://www.chaeron.com

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