(v13) OverprintBlack (user param)

This page applies to Harlequin v13.1r0 and later; both Harlequin Core and Harlequin MultiRIP

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.