公开(公告)号：US20150153685A1

公开(公告)日：2015-06-04

申请号：US14371527

申请日：2013-01-09

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masashi Hirai ,  Masaki Saka ,  Toshiki Takiguchi

IPC: G03G15/01

CPC classification number: G03G15/1615 ,  G03G15/0136 ,  G03G2215/00143 ,  G03G2215/00151 ,  G03G2215/00156

Abstract: An image forming apparatus (100) is equipped with a plurality of photoreceptor drums (31A to 31D), an intermediate transfer belt (41), a separating and contacting mechanisms (20), a tension roller (44), a meandering correction mechanism, and a controller. The separating and contacting mechanism (20) displaces the intermediate transfer belt (41). The meandering correction mechanism increases and decreases a biasing force applied to each of the opposite end portions of the tension roller (44) according to the amount of movement of the intermediate transfer belt (41) in the axial direction (94) of the tension roller (44). The controller, during a non-image forming period, at a predetermined timing during rotation of the intermediate transfer belt (41), executes a belt displacement process in which the intermediate transfer belt (41) is displaced from a predetermined reference position and then returned to the reference position.

Abstract translation: 图像形成装置（100）配备有多个感光鼓（31A〜31D），中间转印带（41），分离接触机构（20），张力辊（44），曲折校正机构 和控制器。 分离和接触机构（20）使中间转印带（41）移位。 曲折校正机构根据中间转印带（41）在张力辊（94）的轴向（94）上的移动量而增加和减少施加到张紧辊（44）的每个相对端部的偏置力 （44）。 控制器在非图像形成期间，在中间转印带（41）旋转期间的预定定时执行带位移处理，其中中间转印带（41）从预定的参考位置移位，然后返回 参考位置。

公开(公告)号：US09091967B2

公开(公告)日：2015-07-28

申请号：US14371527

申请日：2013-01-09

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masashi Hirai ,  Masaki Saka ,  Toshiki Takiguchi

IPC: G03G15/01 ,  G03G15/16

CPC classification number: G03G15/1615 ,  G03G15/0136 ,  G03G2215/00143 ,  G03G2215/00151 ,  G03G2215/00156

Abstract: An image forming apparatus (100) is equipped with a plurality of photoreceptor drums (31A to 31D), an intermediate transfer belt (41), a separating and contacting mechanisms (20), a tension roller (44), a meandering correction mechanism, and a controller. The separating and contacting mechanism (20) displaces the intermediate transfer belt (41). The meandering correction mechanism increases and decreases a biasing force applied to each of the opposite end portions of the tension roller (44) according to the amount of movement of the intermediate transfer belt (41) in the axial direction (94) of the tension roller (44). The controller, during a non-image forming period, at a predetermined timing during rotation of the intermediate transfer belt (41), executes a belt displacement process in which the intermediate transfer belt (41) is displaced from a predetermined reference position and then returned to the reference position.

Abstract translation: 图像形成装置（100）装备有多个感光鼓（31A〜31D），中间转印带（41），分离接触机构（20），张力辊（44），曲折校正机构 和控制器。 分离和接触机构（20）使中间转印带（41）移位。 曲折校正机构根据中间转印带（41）在张力辊（94）的轴向（94）上的移动量而增加和减少施加到张紧辊（44）的每个相对端部的偏置力 （44）。 控制器在非图像形成期间，在中间转印带（41）旋转期间的预定定时执行带位移处理，其中中间转印带（41）从预定的参考位置移位，然后返回 参考位置。