HP L 5 manual Byte 1 Pixel Encoding Mode, Byte Value Pixel Encoding Mode Restrictions

Note

Note

Colorimetric RGB color spaces are based on the 1931 standard

2-degree observer and specified by CIE xy chromaticity coordinates. They use the standard D6500 viewing illuminant and a 45-degree illumination model with a 0-degree collector geometry for reflective data.

CIE L*a*b* is the CIE 1976 Uniform Color Space based on the 1931 standard 2-degree observer, and using a 45-degree illumination model with a 0-degree collector geometry for reflective data. The viewing illuminant is the standard D6500 illuminant.

Luminance-Chrominance spaces are a 3x3 linear transformation from Colorimetric RGB. Like CIE L*a*b*, achromatic data is contained in one channel and chromatic data shares the other two channels.

HP Color LaserJet 5 and 5M printers parse and discard the CID command when Colorimetric RGB spaces are specified. Rather than creating a Colorimetric RGB palette, a device RGB palette is created, but it is populated with the default color of the Colorimetric RGB palette. In addition, the ScreenMatch color table is selected to give the impression of Colorimetric RGB behavior while working in a device-dependent space

Byte 1 (Pixel Encoding Mode)

Byte number 1 designates the format in which raster data is to be transmitted and interpreted. The range of this value field is 0 to 3. All other values for this field are ignored.

Byte Value	Pixel Encoding Mode	Restrictions
0	Indexed by Plane	Bits/index must be
	(default)	1, 2, 3, 4, 5, 6, 7, or 8
1	Indexed by Pixel	Bits/index must be
		1, 2, 4, or 8
2	Direct by Plane	1 bit per primary
		(RGB or CMY only)
3	Direct by Pixel	8 bits per primary
		(All Color Spaces)

B-8 Using Color Modes (Color LaserJet, 5, 5M, DeskJet) EN