The present invention relates to expanding the range of image densities
over which the manipulation of differential gloss as may be inherent in
halftoned images may be achieved. By selectively applying halftones with
anisotropic structure characteristics which are significantly different
in orientation while remaining identical in density, a gloss image may be
superimposed within an image without the need for special toners or
paper. This technique may be enhanced across low and high density areas
by application of clear toner. Further, in color systems, light color
toner may be applied to low density image areas and dark under-color
applied in high density image areas, to expand the range of image
densities over which a desired glossmark image will bear an effect.