Re: overprinting ASCII on Laserjet?

Robert Wood (rob...@ionet.net) wrote:
: This is a Hewlett Packard 5P Laserjet and everything is software controlled
: with NO switches to play with.  The HP uses PCL programing.  There are Line
: Termination controls that "should" effect how the CR+LF codes in single and
: combination are interpreted.  But in another place in the HP codes it says that
: the LF (linefeed) ASCII 10 is interpreted as CR (carriage return) ASCII 13.

       Word processors need a "bold" option, so see if 
there is a printer code for that, it may not print twice,
it may just make the ASCII character "pixels" wider.

: Since a laser places toner on the drum as it goes (I am assuming here), I was
: hoping someone else in the group could either confirm that "overprinting" is
: impossible, or they could give me a hint at how to control the printer to
: properly process the file.

       If it heats the drum and then presses the image on
the paper, there may not be a way to actually overprint.
       But there must be a way to get a "bold" character. 

: BTW, the print file contains 130 printable characters per line.  If the line is
: actually supposed to advance, there is a CR and LF at the the end the line.  If
: there is to be overprinting there is just a CR at the end of the line.

       Also check for bi-directional printing, and duplicate
the line without a CR or linefeed (this may not apply to
certain laser printers).

       The standard widths were 80 column and 132 columns,
and some really wide ledger size.
       My Epson inkjet uses pretty much the same standard
ESC 2P as the Epson line printers, and it prints ASCII
fine.   I tried to print ANSI color, but gave up, and
I use NEOgrab to convert ASCII and ANSI screens to gif
for printing now.   But to do more than 25 lines, it
would require breaking up the ASCII file into segments,
and then glue them together after printing.

Joe Fischer 

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