Electrophotography – Control of electrophotography process – Control of fixing
Reexamination Certificate
2005-05-10
2005-05-10
Tran, Hoan (Department: 2852)
Electrophotography
Control of electrophotography process
Control of fixing
C399S397000, C399S400000
Reexamination Certificate
active
06892038
ABSTRACT:
An image forming apparatus is provided, in which there occurs no pulling of a recording medium at different portions, and also, vibration of a trailing end of the recording medium during the time when the trailing end of the recording medium is passed through the transferring portion is suppressed. Thus, no deterioration occurs in image quality such as disturbance of a toner image. The image forming apparatus includes a transferring portion that transfers a toner image formed on an image bearing member onto a recording medium at a transfer position, a fixing portion that fixes the toner image transferred onto the recording medium, and a control portion that controls a fixing/conveying speed at which the fixing portion conveys the recording medium, to thereby control an amount of loop formed in the recording medium by the transferring portion and the fixing portion, in which, in response to a fact that a trailing end of the recording medium has reached a predetermined position on an upstream side of the transfer position in a conveying direction, the fixing/conveying speed is controlled to reduce the amount of loop.
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Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Tran Hoan
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