Image forming apparatus

Details Image forming apparatus Image forming apparatus

2007-03-02

2011-11-01

Nguyen, Anthony H. (Department: 2854)

Electrophotography

Document handling

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C399S394000

Reexamination Certificate

active

08050616

ABSTRACT:
In an image forming apparatus having a registration roller that aligns the leading edge of the sheet and feeds it to the image forming section, a plurality of loop forming rollers that convey the sheet, and a loop forming space for forming a loop in the sheet are placed on the upstream side of the registration roller, and a plurality of loop amount detecting sensors that detect the amount of loop are provided, and the image forming apparatus has the feature that it is provided with a mechanism and a control device for varying the rotational speeds of said plurality of loop forming rollers individually and separately, wherein the loop amounts in a cross-section of the sheet along the sub-scanning direction are adjusted to be at a prescribed value.

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