HP 8712ET User Manual page 191

NOTE
b. Left Margin
printout in mm. Minimum setting is 0.00 mm; maximum setting is
200.00 mm.
c. Print Width
mm. Minimum setting is 80 mm; maximum is 500 mm. Width is
defined relative to the printer. It is the dimension at right angle to
the travel of the paper. Landscape mode is rotated one-quarter
turn relative to portrait mode. Thus, in landscape mode, print
width actually defines the height of the printed image.
PCL5 "PRINT OVERRUN" Errors and Page Protection
When printing using PCL5 format, the printed page's complexity may
exceed the printer's ability to create the image and keep pace with the
engine printing process. If the data is too complex, it might print in
sections, or only part of the page might print—some print data loss is
likely. In such cases, a "PRINT OVERRUN" message appears in the
printer's display.
To solve this problem, some printers have a feature called "Page
Protection" which reserves printer memory for the page image process,
allowing the printer to create the entire page in memory before
physically moving the paper through the printer. This process ensures
that the entire page will be printed.
Enable the page protection feature by consulting your printer manual.
Note: some printers require 2 MB of memory, or more, to support this
page protection feature.
ET User's Guide
Connecting and Configuring Printers and Plotters
: Sets the left margin (non-printing space) of the
: Sets print width (printing space) of printout in
Using Instrument Functions
4-73