发明名称 |
Electrophotographic apparatus and paper detector thereof and paper detecting method thereof |
摘要 |
An electrophotographic apparatus for transferring a toner image formed on a photosensitive drum onto a sheet of paper and melt-fixing the toner image on the sheet of paper, having a paper detector at a predetermined position in a transporting path of the sheet of paper, the paper detector being composed of a light projector, a reflecting member for reflecting a primary light beam emitted from the light projector and a light receiver for sensing a secondary light beam reflected by the reflecting member, to prevent erroneous detections the light receiver is placed at a position relatively displaced with respect to a position where the light projector is located so that the primary light beam and the secondary light beam have tilting components to both a plane parallel to a transporting plane of the sheet of paper and a plane vertical to the transporting plane.
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申请公布号 |
US5745817(A) |
申请公布日期 |
1998.04.28 |
申请号 |
US19960745053 |
申请日期 |
1996.11.07 |
申请人 |
HITACHI KOKI CO., LTD. |
发明人 |
YAMAZAKI, AKIHIKO;YOKOKAWA, SHUHO;TAKAHASHI, KUNITOMO;HIROSE, YOUJI;IWANAGA, HIDENORI |
分类号 |
B65H7/04;B65H7/14;B65H26/02;G03G15/00;(IPC1-7):G03G15/00 |
主分类号 |
B65H7/04 |
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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