发明名称 |
Image forming device and sheet transport device |
摘要 |
This sheet multifeed determination device is capable of accurately detecting a sheet multifeed state, and the sheet multifeed determination device includes: a separating member side sheet speed detecting part which detects a transport speed of a sheet surface on the separating member side of a sheet transported to a nip unit of a paper feed roll and a separating member pressure-contacting mutually; a multifeed sheet detecting part which detects presence of plural sheets in the course of being transported through the nip unit; and a multifeed state determination part which determines not to be in a multifeed state of sheets when the sheet speed detected by the separating member side sheet speed detecting part is V2<=0 and determines to be in the multifeed state of sheets in the case of V2>0 in a condition where the multifeed sheet detecting part detects multifed sheets.
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申请公布号 |
US2007257418(A1) |
申请公布日期 |
2007.11.08 |
申请号 |
US20070798265 |
申请日期 |
2007.05.11 |
申请人 |
FUJI XEROX CO., LTD. |
发明人 |
TSUKAMOTO KAZUYUKI;TAKEUCHI SHIN;SAKAMAKI KATSUMI |
分类号 |
B65H3/52;B65H7/12;B65H3/06;B65H5/06;B65H7/06 |
主分类号 |
B65H3/52 |
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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