Magnetic toner comprising magnetic powders having controlled size distribution
AssigneeCanon Kabushiki Kaisha
InventorsKazunori Murakawa, Yasuo Mitsuhashi, Hitoshi Uchide, Seiichi Takagi, Masaki Uchiyama, Hisayuki Ochi, Motoo Urawa, Eiichi Imai
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Abstract
A magnetic toner comprises magnetic powders having a particle distribution that the particle size of 50% accumulated volume, the particle size of 25% accumulated volume and the particle size of 75% accumulated volume of the magnetic powders are 1.5-4.5.mu., 1.0-4.0.mu. and 2.5-6.0.mu., respectively. This magnetic toner can produce high density and clear images and further, can produce colorful images.
Claims23
A magnetic color toner comprising a colorant, magnetic powders and binder resin, said colorant having a color different from that of the magnetic powder, characterized by the particle size distribution of the magnetic powders that the particle size of 50% accumulated volume, the particle size of 25% accumulated volume and the particle size of 75% accumulated volume of the magnetic powders are 1.5-4.5.mu., 1.0-4.0.mu. and 2.5-6.O.mu., respectively.
A magnetic toner which comprises magnetic powders subjected to sintering and a binder resin.
A magnetic toner which comprises magnetic powders subjected to a reaction in a flux and a binder resin.
Dependencies are inferred from the claim text.