Patent ID: 6100911
Filing Date: 2000-08-08
Classification: B41J

Abstract:
An image processing apparatus for writing images to a thermal print media, the image processing apparatus comprising:a vacuum imaging drum;a print-head having a plurality of light sources;a lead screw for moving said print-head in a first direction;a focus adjustment device for varying a focus of said print-head;a print-head angular adjustment device for varying a print-head angle of said print-head;an encasement for said print-head; anda movable translation table that supports said print-head in said encasement, said lead screw controlling a linear motion of said table;said encasement comprising:a first magnet having a first magnetic flux field disposed along a first axis parallel to an axis of said print-head; anda second magnet having a second magnetic flux field disposed along a second axis parallel to an axis tangent to said print-head;said translation table comprising:a third magnet that is mounted to oppose a first pole of said first magnet so as to create a first repulsive force along said first axis and to provide a back loading for focus adjustment of said print-head, wherein a second pole of said first magnet provides an attractive force against said focus adjustment device; anda fourth magnet that is mounted to oppose a first pole of said second magnet so as to create a second repulsive force along said second axis and provide a back-loading for angular adjustment of said print-head, wherein a second pole of said second magnet provides an attractive force against said print-head angular adjustment device mounted on said encasement.