Carrier for electrophotographic developer and electrophotographic developer containing the same
AssigneePowdertech Co., Ltd.
InventorsKanao Kayamoto, Issei Shinmura, Yuji Sato
Life of this patent
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Abstract
A carrier for an electrophotographic developer comprising spherical magnetic core particles which have a volume average particle size of 25 to 45 μm, an average void size of 10 to 20 μm, a volume based particle size distribution having less than 1% of 22 μm or smaller particles, a magnetization of 67 to 88 emu/g in a magnetic field of 1 kOe, and a difference of 10 emu/g or smaller in magnetization in a magnetic field of 1 kOe between scattered particles and remaining particles.
Claims4
A carrier for an electrophotographic developer comprising spherical magnetic core particles which have a volume average particle size of 25 to 45 μm, an average void size of 10 to 20 μm, a volume based particle size distribution having less than 1% of 22 μm or smaller particles, a magnetization of 67 to 88 emu/g in a magnetic field of 1 kOe, and a difference of 10 emu/g or smaller in magnetization in a magnetic field of 1 kOe between scattered particles and remaining particles.
Dependencies are inferred from the claim text.