Image forming apparatus including detector units

Details Image forming apparatus including detector units Image forming apparatus including detector units

2011-07-12

2011-07-12

Chen, Sophia S (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S045000, C399S401000

Reexamination Certificate

active

07978994

ABSTRACT:
An image forming apparatus includes an image forming unit that forms an image on a recording medium; a fixing unit that fixes the image formed on the recording medium by the image forming unit by applying heat; a first detector unit that detects a length of the recording medium in a transport direction, the first detector unit being disposed upstream of the fixing unit in the transport direction; and a second detector unit that detects the length of the recording medium in the transport direction, the second detector unit being disposed downstream of the fixing unit in the transport direction.

REFERENCES:
patent: 5285247 (1994-02-01), Itoh
patent: 2005/0174377 (2005-08-01), Fujikura
patent: 2007/0201893 (2007-08-01), Yamazaki
patent: 63-005368 (1988-01-01), None
patent: 04-288560 (1992-10-01), None
patent: 10-218427 (1998-08-01), None
patent: 2005-112543 (2005-04-01), None
patent: 2007-304170 (2007-11-01), None
patent: 2008-037532 (2008-02-01), None

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