HP (Hewlett-Packard) PCL Printer User Manual


 
2-12 Using Color Modes EN
In the Indexed-by-Pixel PEM, where the raster data is
interpreted as palette indices, this value determines how to
interpret the byte-ordered row transfers. The following list
shows how each byte is translated into indices:
In the Direct-by-Plane and Direct-by-Pixel PEMs, byte 2 does
not apply to the raster format.
Bytes 3, 4, and 5 (No. of Bits for Components 1, 2,
and 3)
These bytes are ignored for the Indexed by Plane and Indexed Direct
PEMs. For the Direct by Plane PEM they must be set to one bit per
component. For the Direct by Pixel PEM, they must be set to eight bits
per component.
Bits/Index Indices/Byte
18
24
42
81