Number of separations
Determines the number of separations in the PDF file and
compares it to a number that you specify. To specify the
number of separations, select a setting in the
Options: Is
list,
and type a number in the adjacent box.
To not count CMYK colors, select the
Do not count colors
(C,M,Y,K)
check box.
To not count All colors, select the
Do not count All
check box.
To not count a separation that you specify, select the
Do not
count
check box, and type the name of the separation in the
adjacent box.
To restrict spot color detection within a bounding box, select
the
Restrict to elements within
check box, and select
media
box
,
crop box
,
trim box
,
art box
, or
bleed box
.
Rendering Parameters
Custom transfer curve used for images
Determines whether the PDF file contains a custom transfer
curve. A custom transfer curve adjusts the values of color
components in the file to compensate for the output device and
the human eye. The transfer curve can be text and line art,
images, or any other element.
To add or remove a custom transfer curve, select the
Fix
check
box, and select
Apply Transfer curve
or
Remove Transfer
curve
. To apply a transfer curve, the curve must use CMYK or a
spot color, and PDF Preflight profile must use color
management.
Custom halftone curve is used
Determines whether the PDF file contains a custom halftone
curve. A custom halftone curve defines characteristics such as
screen angle, frequency, screen shape, and proprietary screen
names. Screen information is applicable to RIPs that convert
data to bitmaps.
To remove a custom halftone curve, select the
Fix
check box.
Under Color Removal function is used
Determines whether the PDF file contains an under-color-
removal function. An under-color-removal function reduces the
amounts of cyan, magenta, and yellow to compensate for the
amount of black that was added by black generation.
PDF preflight
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