发明名称 |
Developing unit having optical detection of a residual quantity of developer in a developer container |
摘要 |
A developing unit including a developer container for accommodating a developer, a first window portion which is formed in an upper portion of the developer container and through which light passes, a second window portion which is formed in a lower portion of the developer container and through which light passes, a first wiping member for wiping the first window portion, a second wiping member for wiping the second window portion, and a holding member for holding the first wiping member and the second wiping member at opposite ends of said holding member, wherein the holding member performs a reciprocating operation with respect to a supporting point.
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申请公布号 |
US5649264(A) |
申请公布日期 |
1997.07.15 |
申请号 |
US19940340413 |
申请日期 |
1994.11.15 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
DOMON, AKIRA;OKANO, KEIJI;KINOSHITA, MASAHIDE;SHIMIZU, YASUSHI |
分类号 |
G01N21/59;G03G15/08;G03G21/10;(IPC1-7):G03G15/08 |
主分类号 |
G01N21/59 |
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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