发明名称 |
Magnetic toner particles comprising magnetite particles containing silicon |
摘要 |
Magnetite particles of the present invention have an average particle diameter of 0.05 to 0.50 mu m, each of the magnetite particles having a plurality of mountain-shaped protrusions with unsharpened crests on a surface of each magnetite particle, and the number of the mountain-shaped protrusions formed on the surface of each magnetite particle being in the range of 2 to 30 when viewed in projected plan; magnetic iron oxide particles for magnetic toner comprising not less than 60%, in particle number, of the said magnetite particles; and a magnetic toner comprising the said magnetic iron oxide particles and a binder resin. The magnetite particles of the present invention are free from the falling-off from toner particles. The toner particles of the present invention shows a good fluidity and produces visual images having a higher definition upon development of electrostatic latent images.
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申请公布号 |
US6103437(A) |
申请公布日期 |
2000.08.15 |
申请号 |
US19980141410 |
申请日期 |
1998.08.27 |
申请人 |
TODA KOGYO CORPORATION |
发明人 |
KOZAWA, MINORU;AOKI, KOSO;MISAWA, HIROMITSU;MIYAZAKI, SIGENORI;UCHIDA, NAOKI;FUJIOKA, KAZUO |
分类号 |
B32B5/16;C01G49/00;C01G49/08;G03G9/083;(IPC1-7):B32B5/16 |
主分类号 |
B32B5/16 |
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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