A test pattern is written using multiple image beams in a non image zone
at set time intervals. The test pattern is sensed and a profile of each
beam is determined from the multiple image beams. A minimum reflectance
of the profile is determined from the test pattern of each beam thereby
providing an exposure of each respective beam. A centroid of a profile is
determined from the test pattern of each beam thereby providing a
position of each respective beam. At least one of the following is then
determined: frequency, amplitude and phase of banding, which is inherent
in a printing device, based on the sensed test pattern. A plurality of
groups of image beams intensity changes is combined wherein each group is
separated by a set displacement. A banding profile is determined from the
group beam intensities. At least one banding compensation metric is
determined based at least on one of the determined frequency, amplitude
and phase of banding. Beam intensity changes are adjusted based on the
determined banding compensation metric to compensate the banding inherent
in the printing device.