HP PCL/PJL reference - PCL 5 Comparison Guide

2-16 Printer-Specific Differences ENWW
Logical Operation Command
Specifies the logical operation to be performed in RGB color space on
the destination, source and texture to produce new destination data.
?*l#O
Note When source and/or pattern transparency modes are set opaque (not
defaulted), values specified by this command map directly to the
ROP3 (raster operation) table values on the following page. However,
when source and/or pattern transparency modes are set transparent,
the additional operations shown on the previous page must be
performed to achieve the final result.
Logical operations in the table are shown in RPN (reverse polish
notation). For example, the value 225 corresponds to TDSoxn, the
logical function of
NOT (texture XOR (source OR destination))
Note This command is the PCL Version of the HP-GL/2 MC command.
This command sets the ROP value which affects not only PCL
operation but also the HP-GL/2 ROP value.
# = Logical operation value (see Table 2-6)
Default = 252 (TSo)
Range = 0 to 255