(v13) Bump-up curve arrays
This page applies to Harlequin v13.1r0 and later; and to Harlequin Core but not Harlequin MultiRIP.
The array contains a number of (X,Y) pairs each representing a point on the /BumpUpCurve
. The following conditions must be met (which are slightly different to those for a normal calibration curve represented by the /Curve
entry in a colorant subdictionary):
- the array must contain at least 2 number pairs
- the X values must exactly cover the range
0.0
to1.0
(that is, the first number in the array must be0.0
and the second last must be1.0
). - both X and Y values must be at least weakly monotonic (that is, a duplicate X or Y value is allowed to represent a vertical or horizontal curve section), but an X value may not be lower than an X value earlier in the array and a Y value may not be lower than a Y value earlier in the array.
- The RIP connects the points using straight lines. The purpose of this parameter is to allow adjustment of the highlight values in flexographic printing. One
/BumpUpCurve
is used for all color channels.
For more information see the Extensions Manual.