HP L 5 manual Byte Counts and the Tiff v4.0 Compression Mode, ?*b2m3W binary data

The value field (#) identifies the number of bytes in the raster row. These bytes are interpreted as one row of raster graphics data printed at the current Y position at the left raster graphics margin. Upon completion of this command, the cursor position is at the beginning of the next raster row at the left raster graphics margin.

Raster graphics are independent of the text area and perforation skip mode—these boundaries are ignored.

Raster graphic images, raster height, and raster width are limited to the printable area; images that extend beyond the printable area are clipped.

	Byte Counts and the TIFF v4.0 Compression Mode
	The byte count of the value field in the Transfer Raster Data command
	has precedence over the literal, or the command byte, byte count of
	the TIFF v. 4.0 compression mode. For example, the command,
	?*b2m3W [binary data]
	sets compression method=2 (TIFF v. 4.0) and sends 3 bytes of raster
	data for the row. Suppose the binary data appears as follows:
	00000010 00000001 00000001 00000001
	The control (first) byte value of 2 indicates that 3 bytes of literal
	(unencoded) raster data will follow. The Transfer Raster Data
	command, however, specified only three bytes total (including the
	control byte) in the raster row. The control byte and the following two
	data bytes are read, and the remaining data byte is ignored.
	If the last byte indicated by the value field in the Transfer Raster Data
	command is a control byte, that byte is ignored.
Note	If a Transfer Raster Data command is received without an
	accompanying Start Raster Graphics command, any preceding start
	raster values are used (such as left graphics margin, raster height
	and width, etc.).

6-34 Raster Graphics EN