Abstract: Color printing proceeds with multiple halftone
separations overlay. Because of separation overlay misalignment in
printing, the percentage of different primary color combination may
vary and it will result in color shift. In traditional printing procedure
with AM halftone, every separation has different screening angle to
make the superposition pattern in a random style, which will reduce
the color shift. To evaluate the color shift of printing with hybrid
halftoning, we simulate printing procedure with halftone images
overlay and calculate the color difference between expected color and
color in different overlay misalignment configurations. The color
difference for hybrid halftone and AM halftone is very close. So the
color shift for hybrid halftone is acceptable with current color printing
procedure.