发明名称 |
Speed change detection apparatus, image forming apparatus, and method |
摘要 |
A speed change detection apparatus includes an image carrier for carrying a latent image, and a latent image pattern forming device for forming a latent pattern image on the image carrier. The pattern image includes periodically formed line or dot images. An alternating current conversion type surface potential sensor is provided to detect a potential of the surface of the photoconductive member. The alternating current conversion type surface potential sensor further detects a change in speed of the image carrier by detecting a moiré appearing on the latent image pattern.
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申请公布号 |
US2008150543(A1) |
申请公布日期 |
2008.06.26 |
申请号 |
US20070003293 |
申请日期 |
2007.12.21 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
MASUBUCHI FUMIHITO;KATO SHINJI |
分类号 |
G01N27/60 |
主分类号 |
G01N27/60 |
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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