Duplex printer advice

Chuck Robey chuckr at telenix.org
Tue Jun 3 16:17:40 UTC 2008

Hash: SHA1

Ted Mittelstaedt wrote:
>> -----Original Message-----
>> From: owner-freebsd-questions at freebsd.org
>> [mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Wojciech Puchar
>> Sent: Tuesday, June 03, 2008 1:06 AM
>> To: Warren Block
>> Cc: FreeBSD Questions
>> Subject: RE: Duplex printer advice
>>> This depends a lot on your print jobs.  Low quality machine-generated 
>>> PostScript output can be slow.  PCL can also be slow.  The only 
>> way to really 
>>> know is to benchmark with your print jobs.
>> there was no case i found postscript to print faster.
> You won't on an HP printer, at least not an older one. 

??  I had one of the original LaserJet-1's, which derived it's postscript
emulation via a plugin cartridge.  I was  Very happily surprised when I finally
switched to using ghostscript, because my print rate went up on every class of
printing, whether it be the faster text only jobs, or the unbelieveably slow
binary images.  Didn't have color back then.  Text was faster, but FAR faster
with ghostscript.  This was my personal printer, not something told to me by others.

> that HP had to pay a very hefty fee to Adobe for licensing
> PostScript for each printer.  HP did everything possible to push
> PCL and discourage customers from selecting PS because they 
> did not want to continue to have to pay Adobe.  HP did not
> dare mess with the PostScript implementation itself for fear
> of a lawsuit - every HP printer that went out the door they
> definitely made sure was completely compliant with PostScript -
> but they did everything else to discourage it.  They told all
> the companies that wrote tutorials to minimize PostScript and
> enhance PCL, they make PostScript models much more expensive,
> they didn't ship models with Postscript with enough ram to
> run the PostScript interpreter reasonably quickly, and they
> made no effort to speed up the PostScript implementation. Still
> another trick was distributing PPD files that didn't have a
> complete definition of all printer accessories so that when
> you printed PostScript from, for example, Windows, you might
> not have a duplexer definition and could only print duplex
> on PCL.
> Ted
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