| 发明名称 |
Toner for forming electrophotographic image and developers using the same |
| 摘要 |
A toner for forming an electrophotographic image is disclosed. The toner comprises (1) colored particles comprising a resin and a colorant, (2) fine resin particles comprising a polymer formed by condensation of melamine and formaldehyde, and have a volume average diameter of 0.01 mu m to 1.0 mu m, and (3) fine particles of an inorganic material (I) having a volume average diameter of 0.01 mu m to 0.20 mu m and a standard deviation of distribution of the volume average diameter G satisfying the condition of 10</= sigma </=30. It is particularly preferred that the toner is used as a tow componet developer together with a negatively chargeable carrier which comprises (1) magnetic core particles each coated with a coating layer comprising a mixture of homopolymer of an alicyclic methacrylate monomer and a homopolymer of an acyclic methacrylate monomer, or a copolymer of an alicyclic methacrylate monomer and an acyclic methacrylate monomer, and (2) a fine particles of an inorganic material (II).
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| 申请公布号 |
US5705306(A) |
申请公布日期 |
1998.01.06 |
| 申请号 |
US19960645126 |
申请日期 |
1996.05.13 |
| 申请人 |
KONICA CORPORATION |
发明人 |
KITANI, RYUJI;SHIROSE, MEIZO;NAGASE, TATSUYA;UJIHARA, KEIKO;ISHIKAWA, MICHIAKI |
| 分类号 |
G03G9/087;G03G9/09;G03G9/097;G03G9/113;(IPC1-7):G03G9/097 |
主分类号 |
G03G9/087 |
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