Image forming apparatus

Details Image forming apparatus Image forming apparatus

2007-09-04

2007-09-04

Lee, Susan (Department: 2852)

Electrophotography

Control of electrophotography process

Responsive to copy media characteristic

C399S068000

Reexamination Certificate

active

11175525

ABSTRACT:
A machine (1) has a sheet size determiner (111) to determine the length of a recording sheet. A speed setter (112) sets the transport speed of a fixing roller in a transfer unit and the transport speed of a discharge roller at a discharge port. A fixing roller driver (1311) drives the fixing roller at the transport speed of the fixing roller, and a discharge roller driver (1312) drives the discharge roller at the transport speed of the discharge roller. The transport speed setter (112) sets the transport speed of the fixing roller higher than the transport speed of the discharge roller, and sets a difference between these speeds in relation to the length of the recording sheet determined by the sheet. This arrangement prevents a sheet jam and discharge of a recording sheet in an undulated state.

REFERENCES:
patent: 4941021 (1990-07-01), Uchida et al.
patent: 5260751 (1993-11-01), Inomata
patent: 6118514 (2000-09-01), Iwasaki
patent: 08169628 (1996-07-01), None
patent: 2002311661 (2002-10-01), None
patent: 2004-35177 (2004-02-01), None

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