(v13) OverprintBlack (user param)
This page applies to Harlequin v13.1r0 and later; both Harlequin Core and Harlequin MultiRIP
Param | Val | ExType | Vers | Use? | HPS | Ref |
U | s | H | 11 | Y | All |
The application of OverprintBlack
is based on input color values. Output colors that are 100% black after color management but do not have 100% black input values are not affected by OverprintBlack.
When true
, any solid black object (except solid black pixels of images) will be overprinted, regardless of the whether overprinting is turned on. When false
, overprinting will only occur as for any other process color.
/Knockout
is the same as true
except that the /Knockout
parameter forces objects to knockout regardless of the setting of the overprint flag at the time an object is created.
Note: that “blacks” specified in ICCBased spaces are not regarded as being 100% black, so
OverprintBlack
does not apply to these objects, (i.e. is regarded as being false for these objects).
For more information see Overprinting user parameters
. Default: false
.
See also: OverprintProcess
user parameter, Overprint
system parameter and setblackoverprint
procedure.