Konica Minolta micropress release 6 Manuale Utente
47
Trap Thresholds
Determines how large a color change requires trapping. RIP generates a trap
for each separation when the two objects have more than a certain percentage
of change, as long as at least two separations are changing by that threshold
amount in opposite directions. E.g., if color changes from a light red to a dark
red, no trap is needed. If color changes from yellow to magenta, a trap is
needed.
for each separation when the two objects have more than a certain percentage
of change, as long as at least two separations are changing by that threshold
amount in opposite directions. E.g., if color changes from a light red to a dark
red, no trap is needed. If color changes from yellow to magenta, a trap is
needed.
Cyan
Threshold percent for cyan.
Magenta
Threshold percent for magenta.
Yellow
Threshold percent for yellow.
Black
Threshold percent for black.
Objects which intersect images/
vignettes
vignettes
Trapping against images or vignettes is required at boundaries with other
objects and superimposed graphic objects or textual matter. Images and
vignettes contain many colors, so RIP treats each as a solid color and asks
you to specify if the trap should spread, choke, etc. The solid color used in
place of the real colors should be of a roughly average density and neutral
color. You can change the default color to create a better equivalence from the
Image Colors panel in the Trapping Options dialog.
objects and superimposed graphic objects or textual matter. Images and
vignettes contain many colors, so RIP treats each as a solid color and asks
you to specify if the trap should spread, choke, etc. The solid color used in
place of the real colors should be of a roughly average density and neutral
color. You can change the default color to create a better equivalence from the
Image Colors panel in the Trapping Options dialog.
Spread
Generates traps by spreading the object into the image/vignette area; default
method since the precise color of a given area of an image is not known.
method since the precise color of a given area of an image is not known.
Choke
Generates traps by choking. Choked objects print in a knockout (from the
image/vignette), and the trap overprints the image/vignette in the trap color
calculated from the object color and equivalent image/vignette color.
image/vignette), and the trap overprints the image/vignette in the trap color
calculated from the object color and equivalent image/vignette color.
Centerline
Generates traps using the centerline method.
Automatic
Generates a choke or spread trap automatically by comparing the object color
and the declared Image Color from the Trapping Options dialog.
and the declared Image Color from the Trapping Options dialog.
None
Leaves objects untrapped against images.
Text which intersects images/
vignettes
vignettes
Controls the trapping of text against images and vignettes. Such text may
spread, choke, be centerlined, have an automatic policy depending on the
declared Image Color, or have no trapping.
spread, choke, be centerlined, have an automatic policy depending on the
declared Image Color, or have no trapping.
Trap color
InstructsRIP to print traps in three different color modes.
Normal
Prints a trap exactly matchings the color of the objects being trapped (i.e., has
the ink density of the stronger object in each separation). Use with normal
output.
the ink density of the stronger object in each separation). Use with normal
output.
Reduce
Causes dark fringes to show less although misregistration is then visible (but
less than without trapping). Color information is taken from the Trap
reductions section of the Trapping Options dialog. Use with normal output.
less than without trapping). Color information is taken from the Trap
reductions section of the Trapping Options dialog. Use with normal output.
Options…
Trap reductions
Specifies percentage by which to reduce each separation. Default values
reduce trap colors by 10%, so that the trap between an 80% cyan object and a
100% yellow one is 72% cyan and 90% yellow. This control operates only
when Trap color is set to Reduced.
reduce trap colors by 10%, so that the trap between an 80% cyan object and a
100% yellow one is 72% cyan and 90% yellow. This control operates only
when Trap color is set to Reduced.
Image Color
Determines the color used when trapping images or vignettes. Default is a
neutral gray determined to give good overall results; you can change default to
create a better equivalence to the image or vignette in the job. Chosen color
determines a choke or spread trap for objects or text that intersect images or
vignettes.
neutral gray determined to give good overall results; you can change default to
create a better equivalence to the image or vignette in the job. Chosen color
determines a choke or spread trap for objects or text that intersect images or
vignettes.
Item
Definition