Brother International TD-4520DN Raster Command Reference - Page 40
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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/4210D (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/4210D (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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