Patent ID: 9519234
Filing Date: 2016-12-13
CPC Classification: G03G,H01F

Claim Text:
1. A carrier comprising: magnetic core particles; and a coating layer on a surface of each of the magnetic core particles, wherein the coating layer comprises electroconductive particles, wherein the electroconductive particles are electroconductive particles in which a white inorganic pigment is coated with phosphorus-doped tin or tungsten-doped tin, wherein a dope ratio of phosphorus or tungsten to tin in the phosphorus-doped tin or the tungsten-doped tin is 0.010 to 0.100, and wherein a particle diameter of the white inorganic pigment in the electroconductive particles R1 (μm) and a particle diameter of the electroconductive particles R2 (μm) satisfy the following expression: 1.4≦R2/R1≦2.6.