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Simple Color
Mode
The Simple Color command (?*r#U) specifies color
selection from a fixed palette. RGB or CMY raster data
must be sent by plane (?*b#V) as well as by row (?*b#W).
The last plane in each row is sent using the ?*b#W
command; all other planes are sent using the ?*b#V
command. In Simple Color mode, the pixel encoding mode
is always indexed planar.
Simple Color
Command
The Simple Color command creates a fixed-size palette,
whose color specification cannot be modified.
?*r#U
# = –3 – 3 planes, device CMY palette
1 – Single plane K (Black) palette
3 – 3 planes, device RGB palette
Default = 1
Range = –3, 1, 3
The absolute value of the value field specifies the number of
planes per row of raster data to be sent. The number of
entries in the new palette is 2
n
, with index values 0 to 2
n
–
1. For example, a 3-plane palette has 8 entries, with index
numbers 0 to 7.
This command destroys the active palette and creates a
new palette, which becomes the active palette. When the
Simple Color mode is active, PCL and HP-GL/2 commands
that modify the palette are locked out (NP, PC, ?*v#A,
?*v#B, ?*v#C, ?*v#I). When a Simple Color palette is
popped from the stack (?*p#P), it cannot be modified, and
the pixel encoding mode reverts to indexed planar.
A value field of 1 creates a 2-entry Black-and-White
default palette.
Using Color Modes 2-3Using Color Modes 2-3