571
SECTION 7.6 Color Space and Rendering Issues
EFFECT ON COLOR COMPONENT
SOURCE COLOR SPACE AFFECTED COLOR
COMPONENT
OP FALSE OP TRUE, OPM 0 OP TRUE, OPM 1
Separation or Process colorant Paint 0.0 Do not paint Do not paint
DeviceN
Spot colorant Paint source Paint source Paint source
named in source
space
Spot colorant not Paint 0.0 Do not paint Do not paint
named in source
space
TABLE 7.15 Overprinting behavior in the transparent imaging model
AFFECTED COLOR VALUE OF BLEND FUNCTION B (cb , cs ) EXPRESSED AS TINT
SOURCE COLOR SPACE COMPONENT OF
GROUP COLOR SPACE
OP FALSE OP TRUE, OPM 0 OP TRUE, OPM 1
DeviceCMYK, C, M, Y, or K cs cs cs if cs ≠ 0.0
specified directly, cb if cs = 0.0
not in a sampled image
Process color cs cs cs
component other
than CMYK
Spot colorant cs (= 0.0) cb cb
Any process color Process color cs cs cs
space (including other component
cases of DeviceCMYK)
Spot colorant cs (= 0.0) cb cb
Separation or Process color cs (= 0.0) cb cb
DeviceN component
Spot colorant cs cs cs
named in source
space
Spot colorant not cs (= 0.0) cb cb
named in source
space