HP (Hewlett-Packard) PCL Printer User Manual


 
5-10 The PCL Print Model EN
Operators
Source Transparency (specified before logical operation;
default is transparent)
Pattern Transparency (specified before logical operation;
default is transparent)
Logical Operators (default is Texture OR Source)
Operands
Source objects: character cell, raster image, rule, HP-GL/2
vectors and polygons
Texture: foreground color + pattern mask, color pattern
(format 1).
Destination: current page definition
Operation
IF (source transparent && source == white) RETURN
destination
IF (pattern transparent && pattern == white &&
source != white) RETURN destination
ELSE RETURN (logical op (source, texture, destination)