CHAPTER 2 PCL - 80
6. USING GRAPHICS
This HL Series printer affords the user considerable flexibility in the creation of graphic images. Vector, raster
and rectangle graphics are available, all of which allow a range of shading and filling options. The HP-GL/2
graphics commands that are supported are described in the HP-GL/2 section of this manual.
6.1. Source, Pattern and Destination
We refer to a printing model in which a source image (the image to be drawn) is applied to a destination image
(simply the graphics or text that already exist on the page). The source image consists of white space and non-
white areas. The non-white areas are covered by a pattern of some description. The pattern may simply be solid
black or it may itself consist of white and non-white areas, for example the pattern may consist of vertical
spaced lines. You can specify the way in which the white and dark areas of the entire source image and the
white and dark areas of the pattern interact with the destination image to produce the finished effect.
For example
6.1.1. Set source transparency
Esc*v#N (27)(42)(118)#(78) <1Bh><2Ah><76h>#<4Eh>
This command sets the source image 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 white space areas of
the source image when the source image has been printed on top of the destination image.
Opaque mode means that parts of the destination image will not be visible through the white space areas of
the source image when the source image has been printed on top of the destination image.
Pattern
Source ima
e
Destination ima
e
Possible results
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