Brother International TD-4420DN Raster Command Reference - Page 40

Preparation

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Raster Command Reference M Select compression mode ASCII: M {n} Hexadecimal: 4D {n} 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. ⚫ Registry has to be added in order to use TIFF compression mode. For details, refer to section "4.2.1 Preparation". [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 104 bytes of compressed data with TD-4410D/4420DN (203 dpi) or 160 bytes of compressed data with TD-4510D/4520DN/4550DNWB (300 dpi), the data is treated as being all different. As a result, the data will be 105 bytes with TD-4410D/4420DN (203 dpi) or 161 bytes with TD-4510D/4520DN/4550DNWB (300 dpi), including the 1 byte that specifies the data length. - 34 - 7. Printing Command Details

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Raster Command Reference
-
34
-
7. Printing Command Details
M
Select compression mode
ASCII:
M
{n}
Hexadecimal:
4D
{n}
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.
⚫
Registry has to be added in order to use TIFF compression mode.
For details, refer to section “
4.2.1 Preparation”
.
[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 104 bytes of compressed data with TD-4410D/4420DN (203 dpi)
or 160 bytes of compressed data with TD-4510D/4520DN/4550DNWB (300 dpi), the data is treated as
being all different. As a result, the data will be 105 bytes with TD-4410D/4420DN (203 dpi) or 161 bytes
with TD-4510D/4520DN/4550DNWB (300 dpi), including the 1 byte that specifies the data length.