HP PCL/PJL reference (PCL 5 Printer Language) - Technical Reference Manual Part II

EN RF, Raster Fill Definition 22-33
Note A pixel is equal to the size of one dot at the current printer resolution.
z Pen Number - Represents a pixel in the pattern being defined
and indicates its color (black or white).
The pen number parameter defines pixels left to right, top to bottom.
The total number of pen number parameters should be equal to the
width times height parameters. For example, to define a pattern that
is 8 x 16 pixels, you need 128 pen number parameters. If you do not
include enough pen number parameters, the rest of the pixels are
assumed to be white (zero). Patterns are printed in rows parallel to
the plotter-unit X-axis.
0 - White
>0 - Black
Table 22-16 Example: Creating and Printing a Fill Pattern
?E Reset the printer.
?%0B Enter HP-GL/2 mode.
IN; Initialize HP-GL/2 mode.
SP1; Select pen number 1. Even though there is no
physical pen, the SP command must be used
to enable printing.
PU5,5; Lift the pen and move to absolute position
(5,5).
PA3500,2500; Specify absolute plotting and move to
(3500,2500).
RF2,8,4,
0,0,0,0,0,0,0,0,
0,0,0,1,1,0,0,0,
0,0,0,1,1,0,0,0,
0,0,0,0,0,0,0,0;
Define a raster fill pattern (index number 2) that
is 8 dots wide by 4 dots high.
FT11,2; Select the user-defined pattern having an index
number of 2.