发明名称 |
Toner, developer, container containing toner, process cartridge, image forming apparatus and process |
摘要 |
The toner according to the present invention may be produced from a toner raw composition which comprises a foaming agent, a binder resin and a colorant, wherein the colorant comprises a black metal compound, the foaming agent has a volume-average particle diameter of 2 mum to 50 mum, the toner raw composition turns into a porous mixture while the foaming agent expands at melting and kneading the toner raw composition, and the toner obtained through milling and classifying the porous mixture has a specific density of 1.0 g/cm<3 >to 1.3 g/cm<3>, wherein the specific density is determined as follows: 1 gram of toner is pressed at 400 kgf/cm<2 >for five minutes in a discal cavity having a diameter of 20 mm, then the discal toner is removed; the discal toner volume (V) is calculated from the diameter and height, measured at 10 minutes after releasing the pressure on the discal toner, and the discal toner mass (W) is measured; then the specific density is determined from the following formula: Specific Density (rhoT)=W/V.
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申请公布号 |
US2005014081(A1) |
申请公布日期 |
2005.01.20 |
申请号 |
US20040863248 |
申请日期 |
2004.06.09 |
申请人 |
TOSAKA HACHIROH;ITO TOMIAKI;NATORI YUJI |
发明人 |
TOSAKA HACHIROH;ITO TOMIAKI;NATORI YUJI |
分类号 |
G03G9/08;G03G9/087;G03G9/09;G03G9/097;(IPC1-7):G03G9/08 |
主分类号 |
G03G9/08 |
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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