Magnetic carrier, two-component developer and image forming method
AssigneeCanon Kabushiki Kaisha
InventorsYoshinobu Baba, Koh Ishigami, Tomoko Endo, Hiroyuki Fujikawa, Kunihiko Nakamura, Nozomu Komatsu, Chika Inoue, Takayuki Itakura
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Abstract
A magnetic carrier is provided which uses a toner having high coloring power and enables development to be performed at low electric field intensity and can form high quality images while keeping gradation characteristics. The magnetic carrier includes magnetic carrier particles including at least porous magnetic core particles and a resin. The electric field intensity just before the break-down of the magnetic carrier is 1,300 V/cm or more and 5,000 V/cm or less.
Claims11
A magnetic carrier comprising resin-coated magnetic carrier particles, each of which comprises a porous magnetic core particle made from magnetic ferrite,
- wherein the surface of the porous magnetic core particle is partially exposed, and
- wherein the magnetic carrier has an electric field intensity just before break-down of 1,300 V/cm or more and 5,000 V/cm or less.
Dependencies are inferred from the claim text.