Brother International TD-4520DN Raster Command Reference - Page 41

Therefore: 05 23 BA BF A2 22 2B

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Raster Command Reference Example 1 raster of raster graphics transfer: Without compression: 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...... With compression: ED 00 FF 22 05 23 BA BF A2 22 2B ... a b c a. Since "00h" is repeated for 20 bytes, 20d -> 19d -> 13h changed into a negative number is EDh. Therefore: ED 00 b. Since "22h" is repeated for 2 bytes, 2d -> 1d -> 1h changed into a negative number is FFh. 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. - 35 - 7. Printing Command Details

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Raster Command Reference
- 35 -
7. Printing Command Details
Example
1 raster of raster graphics transfer:
Without compression:
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……
With compression:
ED 00 FF 22 05 23 BA BF A2 22 2B …
a
b
c
a.
Since “00h” is repeated for 20 bytes, 20d -> 19d -> 13h changed into a negative number is EDh.
Therefore: ED 00
b.
Since “22h” is repeated for 2 bytes, 2d -> 1d -> 1h changed into a negative number is FFh.
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.