HP PCL/PJL reference - PCL 5 Comparison Guide

2-24 Printer-Specific Differences ENWW
Pixel Placement Command
This command determines how pixels are rendered in images.
?*l # R
Two models are used for rendering pixels when an image is placed on
paper:
• Grid Intersection Model
• Grid Centered Model
This command can be invoked multiple times during a page. It has no
effect except to switch the model being used for imaging.
Note The PCL Pixel Placement command determines how pixels are
placed for both PCL and HP-GL/2 operation.
The example shown in Figure 2-1 illustrates the concepts of the two
models. Assume a rectangle extends from coordinate position (1,1) to
position (3,4). As shown below, each model produces a different
result. (Since PCL printers print only at intersections, grid centered
pixel placement is implemented as shown on the right.)
# = 0 - Grid intersection
1 - Grid centered
Default =0
Range = 0, 1 (command is ignored for other values)