Canon BJC 6000 Service Manual - Page 101

BJC-6000 Part 4: Technical Reference b) Paper thickness adjustment The clearance between the head face of the BJ cartridge and the paper varies with the thickness of the paper. Smaller clearance improves the printing quality however, paper contacting the head face risks spoiling print quality or damaging the BJ cartridge head face. This printer is equipped with a 2-position paper thickness selector to provide constant paper clearance. The carriage shaft is supported by means of an eccentric bearing. The paper thickness selector turns this eccentric bearing to move the carriage up and down in order to adjust the head-to-paper distance. Carriage Guide Frame Carriage Paper Thickness Selector Lever Eccentric Bearing Carriage Shaft Plain Paper Position Thick Paper Position Figure 4-23 Paper Thickness Adjustment Mechanism 4-29