发明名称 |
Developing method and device and color image forming method and apparatus using same |
摘要 |
A method of reverse development for depositing the toner particles to the light potential area of a photosensitive member. The developer used contains magnetic carrier particles and toner particles. An alternating electric field is formed in the developing position or zone. A relative volumetric ratio Q (%) of the magnetic carrier particles in the developing position satisfies 15.0</=Q</=28.0. The relative volumetric ratio is defined as Q=(M/h)x(1/ rho )xC sigma /(T+C) where M (g/cm2) is an amount of applied developer on a developing sleeve surface per unit area, h (cm) is a height of space in the developing position, rho (g/cm3) is a true density of the magnetic carrier particles, C/(T+C) (%) is a weight ratio of the carrier particles in the developer on the surface of the sleeve, and sigma is a ratio of a peripheral speed of the sleeve relative to the peripheral speed of the photosensitive member.
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申请公布号 |
US4954404(A) |
申请公布日期 |
1990.09.04 |
申请号 |
US19880251780 |
申请日期 |
1988.10.03 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
INOUE, MASAHIRO;TAJIMA, HATSUO;SAKEMI, YUJI;OKADO, KENJI |
分类号 |
G03G15/01;G03G13/01;G03G13/09 |
主分类号 |
G03G15/01 |
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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