发明名称 |
Image forming apparatus selectively charging toner using doctor blade |
摘要 |
A doctor blade is provided in contact with frictionally charged toner in a toner tank, which regulates the amount of toner held on a toner holder. A charge control unit supplies to the doctor blade a voltage for selectively charging the toner. As a result, the amount of toner held on the toner holder is regulated, and simultaneously, the toner is charged to a specific polarity with a potential of the frictional charge or more. An electrostatic latent image is formed by the selectively charged toner. The toner is moved and transferred onto a papersheet which is sequentially transported, under the influence of an electric field generated by application of a voltage to an opposite electrode disposed opposing the toner holder. An image by the toner is thus formed on the papersheet.
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申请公布号 |
US6049345(A) |
申请公布日期 |
2000.04.11 |
申请号 |
US19950572412 |
申请日期 |
1995.12.14 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
NISHIO, YUKIHITO;NARIKAWA, SHIRO;FUJITA, HIROKAZU;OKUMURA, YOSHINOBU;YAMASA, HIDEO;IRIUCHIJIMA, TAKESHI |
分类号 |
G03G15/05;B41J2/385;G03G15/08;G03G15/34;(IPC1-7):B41J2/39;B41J2/395;B41J2/40;G03G15/00 |
主分类号 |
G03G15/05 |
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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