Electrophotography – Control of electrophotography process – Control of fixing
Reexamination Certificate
2011-01-11
2011-01-11
Chen, Sophia S (Department: 2852)
Electrophotography
Control of electrophotography process
Control of fixing
C399S069000, C399S329000
Reexamination Certificate
active
07869729
ABSTRACT:
A fixing device fixes an image on a recording medium by applying heat and pressure. In the fixing device, a belt is looped over a heating roller and a first roller provided inside a loop formed by the belt. A belt tensioner is provided outside the loop formed by the belt to apply tension to the belt. A second roller presses the first roller via the belt to form a nip between the first roller and the second roller via the belt. A holder holds the first roller and the second roller to maintain a distance between the first roller and the second roller. A detector detects a position of the belt tensioner. A controller changes a control parameter for fixing the image on the recording medium at the nip when the recording medium passes through the nip according to a detection result provided by the detector.
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Chen Sophia S
Harness Dickey & Pierce PLC
Ricoh & Company, Ltd.
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