HP 5961-0509 manual Repeating a Row, Printing a Zeroed Row Setting the Seed Row to Zero

Repeating a Row

EC*b0W

When using the delta compression method, it is possible to repeat or copy the previous raster row using the Raster Data Transfer command. This is accomplished by setting the Raster Data Transfer command, value field, to zero.

Printing A Zeroed Row (Setting the Seed Row to Zero)

EC*b1Y

	It is possible to print a row of all zeros using the Raster Y-Offset
	command. Sending a Raster Y Offset command, with a value field
	of 1, sets the seed row to zero and prints the zeroed row. Note, that
	the next delta row is applied to a zeroed seed row.
	Other cursor position moves set the seed row to zeros. (Remember,
	non-graphic cursor moves have the same effect as an end graphics
	command.)
Note	If the byte count of the Transfer Raster Data command value field is
	less than the number of bytes that can be replaced, the byte count
	has precedence. Also, if the last byte is a control byte, it is ignored.
	Therefore, &esc*b1W does not affect the seed row, but causes the
	previous row to be replicated.

EN Set Compression Method Command 15-23