Lexmark Printer User Manual page 54

Your Lexmark printer defaults to the forward compatibility mode to enable a
Hewlett-Packard Company's driver to select the forward compatibility fonts. The
Lexmark PCL driver uses the backward compatibility mode and temporarily switches
the printer to this mode. The PCL (PJL) commands to switch the default compatibility
modes are:
Forward
Backward
Specialty PCL Fonts
The following table lists the font selection commands for forward and backward
compatibility mode for each of the five specialty PCL fonts. Since the font selection
commands for the forward and backward compatibility modes are identical, they are
listed together in the table.
Table 2-22: Forward and Backward Compatibility Font Selection Commands
Standard PCL Emulation Font Name
C39 Narrow
C39 Regular
C39 Wide
OCR-A
OCR-B
1
This font is not implemented in the Hewlett-Packard Company's LaserJet 4050.
ESC
ESC
ESC
ESC
1
1
1
1
1
2-42
Forward and Backward Compatibility Mode
Spacing Style
1 0
1 0
1 0
0 0
0 0
PCL
Weight Typeface
0 32774
0 32772
0 32777
0 23584
0 23590