Fixing unit having press roller opening/closing mechanisms

Details Fixing unit having press roller opening/closing mechanisms Fixing unit having press roller opening/closing mechanisms

1997-08-05

1998-11-10

Grimley, Arthur T.

Electrophotography

Image formation

Fixing

399122, 399395, G03G 1520

Patent

active

058358358

ABSTRACT:
A fixing unit includes a heat roller accommodating a heater and a press roller movable between an operating position in which the recording sheet is nipped by the rollers and a retracted position. A driven gear is provided to one axial end of heat roller, which engages a rotating mechanism for rotating the heat roller. An opening/closing mechanism is arranged to move a first axial end (at the same side as the driven gear of the heat roller) of said press roller to said operating position before moving a second axial end of the press roller to the operating position.

REFERENCES:
patent: 5253013 (1993-10-01), Takano et al.
patent: 5564845 (1996-10-01), Yamaguchi et al.

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