HP L 5 manual Data Range Scaling

• Luminance-Chrominance (YUV) ?*v6W[0x04, . . . ]

YUV, which is a linear transformation from SMPTE RGB, is the default Luminance-Chrominance color space. The short form allows the following ranges:

Y = 0.0 to 1.0

U = –0.89 to 0.89

V = –0.70 to 0.70

Note	Luminance-Chrominance color space support is at HP Color LaserJet
	level for HP Color LaserJet 5 and 5M printers.

Data Range Scaling

White and black references define the encoding range for device-dependent color spaces. However, device-independent color spaces require input data pre-scaled to the range 0 to 255. For example, to use the short form for the default YUV color space, the input data must have the following ranges:

Y = 0.0 to 1.0

U = –0.89 to 0.89

V = –0.70 to 0.70

The user must linearly scale (y = mx b) the input data to the range 0 – 255:

Y = 0 (0.0) to 255 (1.0)

U = 0 (–0.89) to 255 (0.89)

V = 0 (–0.70) to 255 (0.70)

B-16 Using Color Modes (Color LaserJet, 5, 5M, DeskJet) EN