发明名称 |
Developer for developing electrostatic image, image forming apparatus and image forming method |
摘要 |
<p>A developer, which includes a base toner containing at least a binding resin and a coloring agent; and inorganic fine particles; wherein the base toner satisfies 105</=SF-1</=130 and 120</=SF-2</=180, wherein SF-1=((absolute maximum length of a particle of the base toner)<2>/area of the particle of the base toner) x( pi /4)x100, wherein SF-2=(peripheral length of the particle of the base toner)<2>/(area of the base toner)x (1/4 pi )x100, wherein the inorganic fine particles have an average particle diameter that ranges between 30nm to 160 nm.</p> |
申请公布号 |
EP1380900(A1) |
申请公布日期 |
2004.01.14 |
申请号 |
EP20030015447 |
申请日期 |
2003.07.09 |
申请人 |
RICOH COMPANY LTD. |
发明人 |
MOCHIZUKI, SATOSHI;SUGIURA, HIDEKI;NAKAYAMA, SHINYA;UMEMURA, KAZUHIKO;ASAHINA, YASUO |
分类号 |
G03G9/097;G03G9/08;G03G15/01;G03G15/08;G03G15/16;(IPC1-7):G03G9/08 |
主分类号 |
G03G9/097 |
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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