Xerox 8000AP Manuale Supplementare

Pagina di 98
S
POT
-O
N
70
• RGB (Device Code 0-255)
– Small: A substitute color replaces any color that falls within the nearest +/- 0.25 of the 
color value entered.
– Large: A substitute color replaces any color that falls within the nearest +/- 1 of the 
color value entered. 
• RGB (0-100%)
– Small: A substitute color replaces any color that falls within the nearest +/-0.25% of the 
color value after scaling. 
– Large: A substitute color replaces any color that falls within the nearest +/-0.5% of the 
color value after scaling.
Color substitution
A color substitution takes place when a substitute color is defined with a different set of 
CMYK values for the same value-name as the original color.
The following color examples show how a substitution works.
Original color:
 <100, 0, 0, 0> for the CMYK values (cyan)
Substitute 1:
 <0, 100, 100, 0> (red)
Substitute 2:
 <100, 0, 100, 0> (green)
N
OTE
In the examples, the extreme values and terms “red” and “green” are used for illustrative 
purposes only. In practice, color substitution is not used for extreme color shifts.
The following table shows color substitution with different sets of CMYK values assigned to 
the same original color.
Priority scheme
If two substitute colors are defined with the same value-names, but with different sets of 
CMYK values and different tolerance ranges, Spot-On resolves the priority of substitution 
according to the order of color in the group.
Spot-On process color substitution is based on the order of color in the group. The color 
entries at the top of the list have priority over the colors at the bottom of the list. Spot-On 
scans the list from top to bottom and processes substitution in linear order. When a color is 
remapped, it is not overridden by any subsequent substitution call.
Substitution 
value-name
CMYK 
values
Before 
substitution
After 
substitution 
Original color
<100, 0, 0, 0>
Substitute 1
<100.0c, 0.0m, 0.0y, 0.0k>
<0, 100, 100, 0>
cyan
red
Substitute 2
<100.0c, 0.0m, 0.0y, 0.0k>
<100, 0, 100, 0>
cyan
green