发明名称 |
Belt device and unit device including belt device and image forming apparatus using the belt device and unit device |
摘要 |
An image forming apparatus suppresses several kinds of inconveniences caused by unnecessary contact of a belt-formed member with opposing members and drives the belt-formed member accurately even when the belt-formed member separated from a part of a plurality of opposing members. In an image forming apparatus having a belt-formed member supported by a plurality of supporting rollers and a plurality of opposing members located side by side in a line to oppose and contact the belt-formed member, a pivot mechanism is employed to temporarily separate the belt-formed member from a part of the opposing members for color image formation. The image forming apparatus also includes a tension roller dive mechanism to increase a relative distance between the tension roller and other supporting rollers to suppress a decrease in a tension of the belt-formed member during the above-described separation of the belt-formed member from the plurality of opposing members.
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申请公布号 |
US2003185602(A1) |
申请公布日期 |
2003.10.02 |
申请号 |
US20030396486 |
申请日期 |
2003.03.26 |
申请人 |
SASAMOTO TETSUROU;MIYAWAKI KATSUAKI;OBU MAKOTO;SUZUKI MINORU;AOYAMA YUICHI |
发明人 |
SASAMOTO TETSUROU;MIYAWAKI KATSUAKI;OBU MAKOTO;SUZUKI MINORU;AOYAMA YUICHI |
分类号 |
G03G21/00;G03G15/00;G03G15/01;G03G15/08;G03G15/16;(IPC1-7):G03G15/01 |
主分类号 |
G03G21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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