HP L 5 manual Mode 2 Direct by Plane

MODE 2: DIRECT BY PLANE

In this mode, a pixel is composed of three, one-bit components. The data is transferred a plane at a time, one plane for each component. Therefore, each bit in a plane represents one component of a pixel. The underlined bits below show the components for a pixel.

?*b#V	row 1	plane 1	(red)	b1	b1	b1	b1	b1	b1
?*b#V		plane 2	(green)	b2	b2	b2	b2	b2	b2
?*b#W		plane 3	(blue)	b3	b3	b3	b3	b3	b3
?*b#V	row 2	plane 1	(red)	b1	b1	b1	b1	b1	b1

Example:

In the example below the data in the row transfer commands are shown in binary for clarity, even though the actual data would be byte-aligned binary data. The example is for an eight-pixel-wide image.

?*v6W 00 02 01 01 01 01	Binary Data for the CID command
	represented in hexadecimal. This
	command sets the color space to
	RGB, the PEM to Direct by Plane.
	The palette size is ignored. The
	last three bytes are always one
	for this mode.
?*r1A	Start raster
?*b1V10110000	Transfer plane 1 (the first bit for
	each pixel in the first row). Each
	bit controls the red primary.
?*b1V01110000	Transfer plane 2 (the second bit
	for each pixel in the row). Each bit
	controls the green primary.
?*b1W10101000	Transfer plane 3 (the third and
	final bit for each pixel in the row)
	and move to the next row. Each
	bit controls the blue primary. Note
	that the ?*b#W command is
	used to send the last plane of
	each row.

2-10 Using Color Modes EN