Invention Grant
US08170435B2 Belt driving mechanism, fixing device, image forming apparatus using same, and belt position adjustment method used therein
有权
皮带驱动机构，固定装置，使用该装置的图像形成装置及其中使用的皮带位置调整方法
- Patent Title: Belt driving mechanism, fixing device, image forming apparatus using same, and belt position adjustment method used therein
- Patent Title (中): 皮带驱动机构，固定装置，使用该装置的图像形成装置及其中使用的皮带位置调整方法
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Application No.: US12640611Application Date: 2009-12-17
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Publication No.: US08170435B2Publication Date: 2012-05-01
- Inventor: Satoshi Ueno
- Applicant: Satoshi Ueno
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company Limited
- Current Assignee: Ricoh Company Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-327278 20081224
- Main IPC: G03G15/20
- IPC: G03G15/20
Abstract:
A belt driving mechanism includes an endless belt wound around first and second belt supporters, rotated by a driving source, a pressure member that presses against the first belt supporter via the endless belt, a deviation detector to detect a deviation of the endless belt in its thrust direction, a cam mechanism including a rotary cam shaft extending the thrust direction of the endless belt and a first pressure change member of irregular shape, and a controller to changes a rotational position of the first pressure change member according to a detection result by the deviation detector. The first pressure change member has multiple different lengths of radii between a center portion of the cam shaft and its outer circumference and is attached to the cam shaft to press a first end portion of one of the first belt supporter and the pressure member.
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