发明名称 |
Transfer apparatus, image forming apparatus, and method of belt-speed correction |
摘要 |
A belt rotates and carries a plurality of images. A scale is provided along at least one side of entire of the belt. A sensor reads the scale on the belt to obtain scale information. An actual speed calculating unit calculates a speed of the belt from the scale information. A control unit provides a control to correct speed of the belt according to the speed calculated. The control unit includes a frequency-correcting unit that performs correction of only a frequency component that is fluctuating of low frequency that is smaller than a predetermined frequency that is developed due to a change in a speed of the belt, from among speed fluctuations of the belt to adjust the speed of the belt to a predetermined target speed.
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申请公布号 |
US7058327(B2) |
申请公布日期 |
2006.06.06 |
申请号 |
US20030743730 |
申请日期 |
2003.12.24 |
申请人 |
RICOH COMPANY, LIMITED |
发明人 |
ISOBE TAKUNDO |
分类号 |
G03G15/16;G03G21/14;G03G15/01 |
主分类号 |
G03G15/16 |
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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