Set Pattern Transparency - Brother HL-1050 Technical Reference Manual

For example
With transparent
source image

6.1.2. Set pattern transparency

Esc*v#O (27)(42)(118)#(79)
 This command sets the pattern transparency.
 # is either 0 or 1. Set # to 0 to select transparent mode and to 1 to specify opaque mode.
 Transparent mode means that parts of the destination image will be visible through the patterned areas of the
source image when the source image has been printed on top of the destination image. If the pattern is a solid
black fill obviously you will not be able to see any of the destination image through the patterned areas of
the source image.
 Opaque mode means that the destination image will not be visible through the patterned areas of the source
image when the source image has been printed on top of the destination image.
Pattern
Source image
Destination image
Possible results
CHAPTER 2 PCL - 81
With opaque
source image
<1Bh><2Ah><76h>#<4Fh>