发明名称 |
Toner density sensor for electrostatic copying machine |
摘要 |
A toner mixture comprising ferromagnetic carrier particles and non-magnetic toner particles are caused to flow through a conduit for measuring the toner density which is the ratio of toner particles to carrier particles in the mixture. The effective inductance of an electromagnetic coil disposed in the conduit varies in accordance with toner density. The coil is designed so that the magnetic lines of force thereof are substantially confined within the conduit and are not influenced by external bodies.
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申请公布号 |
US4200388(A) |
申请公布日期 |
1980.04.29 |
申请号 |
US19770851904 |
申请日期 |
1977.11.16 |
申请人 |
RICOH CO LTD |
发明人 |
HASEBE, MITSUO;HIBI, KUNIO;WATANABE, MUTSUO;WATANUKI, MASAYOSI |
分类号 |
G03G15/08;(IPC1-7):G03G15/00 |
主分类号 |
G03G15/08 |
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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