Patent ID: 6774925
Filing Date: 2004-08-10
Classification: G06K

Abstract:
A method for suppressing banding due to vibration in a laser imager, comprising the steps of:selectively discharging an imaging means including a light source for producing a light beam and scanning means for repeatedly scanning said light beam in parallel and adjacent linear scan lines across an electrophotographic medium, said imaging means further including beam modulation means including data signal producing means for causing said beam to produce a latent image in accordance with governing equations which relate on/off time and intensity to velocity and frequency of vibration with data desired for reproduction, wherein said beam modulation means displaces said light beam orthogonally to said linear scan lines in a manner based on calculating means to suppress development of a regular interstitial pattern at boundaries of adjacent scan lines; producing data signal by defining a combination of amplitude and frequency modulation equations; wherein said beam modulation means displaces said light beam orthogonally by an amplitude directly related to said amplitude of frequency modulation.