HP PCL/PJL reference (PCL 5 Color) - Technical Reference 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)