[bug-pcl] PCL - works on printer not on ghostPCL

[amn]

Hi,

It appears to be working ok now, I'm not sure why to be honest :S very
strange. Thanks for all your help with this, it's really appreciated

-----Original Message-----
From: Paul Lechnar [mailto:paul at mis.com]
Sent: 25 May 2005 16:33
To: amn
Cc: bug-pcl at ghostscript.com
Subject: Re: [bug-pcl] PCL - works on printer not on ghostPCL


Adam - from you description, it is likely you are having a "stair-step"
problem which is common in the PCL world.  It has to do with the
difference between the Carriage Return (CR) and Line Feed (LF)
characters which are at the end of each line of the document.  If you
are in fact getting stair stepping, then it's likely that your document
has LF (ASCII 10) characters at the end of each line but no CR (ASCII
13) along with it.  The effect is that the "cursor position" is moved
DOWN a line, but not RETURNED to the left side of the page (think old
manual typewriters and the Ding! sound).  It's also likely that the
Optra is compensating for this automatically (it's a common setting on
Laser printers to make LF behave like CR/LF).  GhostPCL does NOT do this
by default. However, here's something to try: add the following PCL
command to the beginning of your document:

<ESC>&k2G

This is the ESC character (ASCII 27) followed by an ampersand, lowercase
letter "k", numeral 2, and uppercase letter "G".

This tells a PCL engine to convert LF to CR/LF and should fix your
problem.  Note, however: if there are other PCL commands at the
beginning of your document, this PCL command should come after most of
the other PCL commands, especially <ESC>E which is the PCL reset command
and will wipe out that conversion setting.

Hope that helps,

Paul

amn wrote:

>Hi,
>
>Firstly an apology, I'm new to using PCL and have inherited someones code
so
>please excuse any stupid questions/comments I may make.
>
>The code I have at the moment produces a PCL document that prints perfectly
>on a printer (a lexmark optra S 2455 if that makes any difference). However
>when I run the PCL through ghostPCL (or some other free utils I have found)
>the output is not as expected, it appears as if the image has been skewed
at
>regular intervals. This leads me to believe that there must be a problem
>with the PCL that is produced. However I'm unsure of how to check the
>validity of the PCL as it appears to print correctly. Any advice would be
>appreciated, I can attach the PCL if that would be useful.
>
>Apologies if this is the wrong place for this.
>
>Regards
>
>Adam Neal
>
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