Color image forming apparatus

Details Color image forming apparatus Color image forming apparatus

2007-08-15

2009-11-10

Ngo, Hoang (Department: 2852)

Electrophotography

Internal machine environment

Particle or contaminant control

C399S302000

Reexamination Certificate

active

07616914

ABSTRACT:
There is described a color image forming apparatus, which makes it possible to prevent the intermediate transfer belt from slacking. The apparatus includes a plurality of image bearing members; an intermediate transfer belt onto which a full color toner image is formed; a driving roller to drive the intermediate transfer belt; a transfer unit to transfer the full color toner image onto a sheet; a cleaning unit to remove residual toner remaining on the intermediate transfer belt; a first tension applying unit, located upstream from the transfer unit in a circulating direction of the intermediate transfer belt, to apply a first tension onto the intermediate transfer belt; and a second tension applying unit, located downstream from the cleaning unit in the circulating direction of the intermediate transfer belt, to apply a second tension onto the intermediate transfer belt.

REFERENCES:
patent: 6445900 (2002-09-01), Fukao et al.
patent: 6934497 (2005-08-01), Hagiwara et al.
patent: 2001-318507 (2001-11-01), None

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