Heat roll fixing unit

Details Heat roll fixing unit Heat roll fixing unit

1991-06-19

1993-02-09

Yuen, Henry C.

Heating

Advancing structure flexing, looping or coiling sheet, web...

Internally heated roll

432 59, 432228, 219216, 219469, F27B 928

Patent

active

051849526

ABSTRACT:
A heat roll fixing unit for fusing a toner image on a recording sheet in an image recording device is provided with a heat roller and a backup roller arranged oppositely to the heat roller. The recording sheet bearing a toner image is fed between the backup roller and the heat roller. At least one of the heat roller and the backup roller has a plurality of slits at an end thereof and a gear member having a plurality of protrusions on the inner periphery thereof is provided. The protrusions are fitted in the slits, respectively, and driving means for driving the gear member to rotate the rollers is also provided.

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