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