HP L 5 manual ROPs in the CMY Color Space

				Table 5-1. RGB ROP Truth						Tables
	ROPrgb 252							ROPrgb 90							ROPrgb n
	(11111100)						(01011010)						n=(b7b6b5b4b3b2b1b0)
T		S	D	D		T		S	D	D		T		S		D	ROP n	D
1		1	1	1	white	1		1	1	0	white	1		1		1	b	b
																	7	7
1		1	0	1		1		1	0	1		1		1		0	b6	b6
1		0	1	1		1		0	1	0		1		0		1	b5	b5
1		0	0	1		1		0	0	1		1		0		0	b4	b4
0		1	1	1		0		1	1	1		0		1		1	b3	b3
0		1	0	1		0		1	0	0		0		1		0	b2	b2
0		0	1	0		0		0	1	1		0		0		1	b1	b1
0		0	0	0	black	0		0	0	0	black	0		0		0	b	b
																	0	0

ROPs in the CMY Color Space

The CMY ROP truth tables in Table 5-2 shows examples of how the ROPs number determines the value of the Destination for all combinations of Texture, Source, and Destination. In the CMY color space a “0” is the absence of ink (white) and a “1” is the presence of ink (black), the opposite of the RGB color space value for black and white. Therefore, the ROPs results (Destination values) for the CMY color space are the opposite (negation) of the RGB values. However, a CMY ROP is easier to use when determining if the page is marked, since a “1” denotes marking.

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