发明名称 |
Developer material level sensor |
摘要 |
Apparatus for providing an electrical signal when developer material for a copy machine recedes to predetermined level in a container for the material. The apparatus is positioned within the container and includes a light generating means directing light to a light to electric transducer. A cleaning member carried by a rotating arm is included which with rotation of the arm displaces any developer material that is present between the light generating means and the transducer means.
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申请公布号 |
US4292530(A) |
申请公布日期 |
1981.09.29 |
申请号 |
US19800126322 |
申请日期 |
1980.03.03 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
NEPPER, ROBERT F.;PETERSON, DENNIS L. |
分类号 |
G01F23/292;G03G15/08;(IPC1-7):G01N21/26 |
主分类号 |
G01F23/292 |
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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