Printer

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101/41

G03G 15/14 (2006.01) G03G 13/14 (2006.01) G03G 15/00 (2006.01) G03G 15/09 (2006.01) G03G 15/20 (2006.01)

Patent

CA 1324912

PRINTER ABSTRACT OF THE DISCLOSURE An electrostatic printer including a photo- conductive drum (2), a developer (5) for forming a toner image on a surface of the drum (2), a pickup roller (11) for removing a medium (10) in a cut sheet form from a hopper (8), a regist roller (12) for introducing the cut sheets (10) removed by the pickup roller (11) into a printing zone, a fuser (14) for fixing the toner image on the cut sheets (10), and an eject roller (16) for discharging the medium (10) from the printing zone, characterized in that a single motor (19) selectively rotatable in the normal direction and the reverse direction according to commands output by a control unit (300) is provided for driving the aforesaid rotating elements (2, 5, 11, 12, 14, 16); a torque derived from the motor being transmitted, on one hand, to the pickup roller (11) through a first transmission system (100) incorporating a one-way clutch (20a) which transmits only one directional rotation of the motor, and on the other hand, to the rotating elements (12, 14, 16) other than pickup roller (11) through a second transmission system (200) incorporating another one-way clutch (20b) which transmits only the opposite directional rotation of the motor (19).

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