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Set Compression
Method Command
The Set Compression Method command allows you to
encode raster data in one of four compressed formats:
Run-length encoding, Tagged Imaged File Format (TIFF)
rev. 4.0, delta row compression, and adaptive compression.
The choice of compression methods affects both the amount
of code needed to generate a raster graphic image and the
efficiency with which the image is printed.
? * b # M
# = 0 - Unencoded
1 - Run-length encoding
2 - Tagged Imaged File Format (TIFF) rev. 4.0
3 - Delta row compression
4 - Reserved
5 - Adaptive compression
Default = 0
Range = 0 - 5 (values outside the range are
ignored)
Unencoded
(Method 0)
This is a simple binary transfer of data: no compression.
Each bit describes a single dot. Bit 7 of the first byte
corresponds to the first dot within the raster row, bit 0
corresponds to the eighth dot, and so on.
Note Compressed data formats allow for efficient transfer of data
from the host system to the printer. However, compressed
data formats do NOT reduce the amount of printer memory
required to produce an image.
6-20 Raster Graphics6-20 Raster Graphics