On Fri, 03 Oct 2008 16:34:31 -0700
norseman <[EMAIL PROTECTED]> dijo:

> Joe Grech wrote:
> > What advantages are there if any in saving a file in pdf for printing? Tks

In addition to Steve's response, there is one additional advantage -
also related to printing.

Many have heard of PostScript, a page description language, and some
have also heard of Page Composition Language (PCL). Adobe owns
PostScript, but publishes the spec and allows others to use it. Some
printers come with PostScript built in, but if the printer manufacturer
wants genuine Adobe PostScript they must pay a royalty to Adobe. To get
around this Hewlett Packard developed PCL as an alternative.
Hewlett-Packard owns PCL and requires other printer manufacturers to
pay them royalties if they want to include in on their printers.

To get around the royalty problem there are emulation packages
available that printer manufacturers can license from third parties.
For example, if a printer comes with "PostScript emulation" instead of
genuine Adobe PostScript, chances are that the PostScript emulation was
licensed from Xionics. Ditto for PCL - there are third party vendors
who will license a PCL clone to a manufacturer to get around
Hewlett-Packard's ownership of PCL.

Hewlett-Packard doesn't seem to be concerned with the clone vendors,
but Adobe does. Adobe makes quite a bit of money licensing genuine
Adobe PostScript to printer manufacturers. In the past Adobe could
always rely on the fact that the vendors of PostScript clones didn't do
a perfect job. Users would get occasional print errors. But nowadays
the PostScript clones are darn near perfect. Adobe sees its revenue
from licensing PostScript to printer vendors diminishing.

To get around this Adobe has come up with a brand new idea - the Adobe
PDF print engine. I own a Xerox Phaser 7400DN which comes with genuine
Adobe PostScript level 3, a PCL clone, and genuine Adobe PDF print
engine. If I send a PDF file to this printer it images almost instantly.

Why did Adobe come up with the Adobe PDF print engine? Because they
have lost control of the PostScript market to the clone vendors. So far
no one has cloned the Adobe PDF print engine, so Adobe can push it to
vendors of high end laser printers. Adobe claims it is the wave of the
future. For now I can say that it is really cool. I print a lot of
textbooks from PDF files, and printing to the Phaser 7400DN is a dream.

So the bottom line to all I have said is that printing from PDF files
is a definite advantage if you are printing to a high end printer. And
in the future more and more printers will come with the Adobe PDF print
engine, so it will become even more advantageous.
-- 


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