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AssigneeKyocera Mita Corporation
InventorsYukinori Nakayama, Kouzou Teramoto, Kousuke Satou, Hiroshi Mizuhata
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The two component developer comprises magnetic toners and the magnetic carriers which forms magnetic ears on the surface of the developing roller. The magnetic toner is of an average particle size 0.01 μm through 0.50 μm and is of octahedron shape that is a convex polyhedron surrounded by eight triangles as a basis, each of the vertexes and edges of the octahedron shape toner being in a curved surface shape and having a portion that can be taken as a straight line on the outer periphery of a projected image of the octahedron shape toner. The magnetic ears are electrically charged by the friction between the magnetic toner and the magnetic carriers and the magnetic ears on the developing roller are carried to the electrostatic latent image on the photoreceptor. The latent image is developed by the magnetic toners in the magnetic ears, in a small gap between the developing roller and the photoreceptor. Due to the two component developer, the toner charges are rapidly induced and moreover the toners are not excessively charged.
Magnetic toner for two component developer comprising said magnetic toner and a carrier, wherein said magnetic toner is of an average particle size 0.01 μm through 0.50 μm and is of octahedron shape that is a convex polyhedron surrounded by eight triangles as a basis, each of vertexes and edges of the octahedron shape toner being in a curved surface shape and having a portion that can be taken as a straight line on the outer periphery of a projected image of said octahedron shape toner.
An electro-photographic image forming method, which comprises the steps of:
Dependencies are inferred from the claim text.