Brother RuggedJet RJ-4040 Manuel du logiciel - Page 33

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Brother RuggedJet RJ-4040 Manuel du logiciel
M
Select compression mode
ASCII:
M
Hexadecimal: 4D
Parameters
Definitions of {n}
0
No-compression mode (Enabled)
1
Reserved (Disabled)
2
TIFF (Enabled)
Description
 Selects the compression mode. Data compression is available only for data in raster graphic transfer.
[TIFF(Pack Bits)]
 1-byte units
 If the same data is repeated, the number of data units and that 1 byte of data are specified.
If different data is in a series, the number of data items and all of the different data are specified.
 If the same data is repeated, the number of data units is specified as the actual number minus 1,
expressed as a negative number.
If different data is in a series, the number of data units is specified as the number of bytes minus 1,
expressed as a positive number.
 If the above process results in more than 162 bytes of compressed data, the data is treated as being all
different. As a result, the data will be 163 bytes, including the 1 byte that specifies the data length.
Example
1 raster of raster graphics transfer:
Without compression:
With compression:
Since "00h" is repeated for 20 bytes, 20d -> 19d -> 13h changed into a negative number is EDh.
a.
Therefore: ED 00
Since "22h" is repeated for 2 bytes, 2d -> 1d -> 1h changed into a negative number is FFh.
b.
Therefore: FF 22
c.
The following 6 bytes remain unchanged. 6d -> 5d -> 5h
Therefore: 05 23 BA BF A2 22 2B
Continue for the remaining number of bytes for the uncompressed data. Even if 00h continues until the
end, it cannot be omitted.
{n}
{n}
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 22 22 23 BA BF A2 22 2B......
ED 00 FF 22 05 23 BA BF A2 22 2B ...
a
b
c
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Raster Command Reference
4. Printing Command Details