HP PCL/PJL reference (PCL 5 Color) - Technical Reference Manual

B-22 Using Color Modes (Color LaserJet, 5, 5M, DeskJet) EN
Note HP Color LaserJet 5 and 5M printers bypass the Colorimetric RGB
process. In place of it, a device-dependent RGB process is
substituted with a Screen Match color table.
Luminance-Chrominance (Long Form)
The long form for Luminance-Chrominance allows color spaces other
than the default YUV, such as Kodak Photo YCC, the proposed JPEG
and TIFF 6.0 YCrCb standard, YES, and YIQ. These
Luminance-Chrominance color spaces are derived from the
Colorimetric RGB space using a 3x3 transformation matrix. The
tristimulus luminance y value of the white point is assumed to be
100% and is therefore not specified.
76 Maximum green value (lsw) 77
78 Minimum blue value (msw) 79
80 Minimum blue value (lsw) 81
82 Maximum blue value (msw) 83
84 Maximum blue value (lsw) 85
Byte 15 (msb) 8 7 (lsb) 0 Byte
Byte 15 (msb) 8 7 (lsb) 0 Byte
0 Color space Pixel encoding mode 1
2 Bits per index Bits per primary #1 3
4 Bits per primary #2 Bits per primary #3 5
6 Encoding for primary #1 R (msw) 7
8 Encoding for primary #1 R (lsw) 9
10 Encoding for primary #1 G (msw) 11
12 Encoding for primary #1 G (lsw) 13
14 Encoding for primary #1 B (msw) 15
16 Encoding for primary #1 B (lsw) 17
18 Encoding for primary #2 R (msw) 19
20 Encoding for primary #2 R (lsw) 21