User`s manual

Left Margin
The left margin is trimmed.
Printable Area
Print Area Width
Extended toward
the right
(2) If a sufficient area cannot be provided as a result of step (1), the print area
is extended toward the left (so that the left margin is decreased).
(3) If a sufficient area cannot be provided as a result of step (2), the right
spacing is trimmed.
•When mapping a bit image (or downloaded bit image), if the print area is
narrower than the minimum width of the bit image (two dots for single density,
or one dot for double density), only the line for that image is handled as follows:
(1) The print area is extended toward the left (so that the left margin is
decreased) until it is equal to the minimum width of the image, but not
wider than the printable area.
[Default] nL = 0, nH = 2
[See Also] GS L, GS P