Patent ID: 6057867
Filing Date: 2000-05-02
Classification: B41J,G06K

Abstract:
A print apparatus including a laser for generating a laser beam, a photoconductor and mechanical means for moving said photoconductor past a laser scan line exposure position, so as to enable a plurality of scan lines to expose said photoconductor along a page movement direction, said print apparatus comprising:a photoconductor position sensor for producing a photoconductor position error signal that is indicative of a mispositioning of said photoconductor;a circuit means for producing an error correction signal in response to said photoconductor position error signal; anda piezoelectric deflector responsive to said error correction signal to move said laser beam so as to align a scan line on said photoconductor at a position characterized by a distance from a previous scan line on said photoconductor, said distance being measured along said page movement direction.