Web feeding mechanism

Details Web feeding mechanism Web feeding mechanism

B - Operations, Transporting

65

H

271/47

B65H 20/20 (2006.01) B41J 15/16 (2006.01)

Patent

CA 1229632

ABSTRACT A printer includes a print mechanism for performing printing operations and a print medium feeding mechanism for feeding a print medium past the print mechanism so that printing operations can be performed on the print medium. The print medium feeding mechanism includes a forward feed apparatus located downstream of the print mechanism for feeding the print medium in the forward direction past the print mechanism and a print medium tensioning apparatus. A reverse drive is also included. The tensioning apparatus includes at least one pair of pressure wheels rotatable mounted on the frame and located on opposite sides of a print medium being fed by the forward feed apparatus and means for restricting the rotation of at least one of the pressure wheels, whereby the pressure wheels exert a retarding force on the print medium tending to tension the print medium. Each pressure wheel is constructed so that it is flexible in the axial direction so as to permit lateral movement of a print medium as it passes between the pair of pressure wheels.

481630

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