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Topic: Re: Why this file doesn't print correctly ? (Via Email)
Conf: (P-PDF) Developers, Msg: 31939
From: LeonardR
Date: 12/21/2001 03:52 PM
At 06:18 AM 12/21/2001 +1100, p-pdf-developer Listmanager wrote:
>Whenever a file displays well but prints incorrectly, the immediate
>suspect is a missing /ProcSet. And your page does not have a /ProcSet, or
>even /Resources.
This is only true for Acrobat < 5.0. According to the PDF 1.4
specification, there is no longer a need for /ProcSet - BUT it is certainly
a VERY IMPORTANT item for when you don't know what version of Acrobat (or
any other PDF processor) may be involved.
It also is really only relevant (I believe) when printing to a
Postscript device. Raster (and other non-PS devices) don't care about
ProcSets.
>Look up ProcSet in the PDF spec and learn the difference between ImageC,
>ImageB, and ImageI. I used them all for a test, but for your software,
>you should only add the ones that are needed. Otherwise, you will slow
>printing down as Acrobat downloads unneccessary handling code.
I believe the PDF 1.4 spec says that you should put them ALL in
for full compatibility...
Leonard
