Patent ID: 7939233

Claim:
A magnetic carrier which comprises: magnetic carrier particles containing porous magnetic core particles which are filled in pores thereof with a first resin; wherein the porous magnetic carrier particles filled in pores thereof with the first resin are further coated on the surfaces thereof with a second resin, which is the same or different from the first resin; and wherein 60% by number or more of the magnetic carrier particles satisfies the following (a), (b) and (c) when cross-sectional reflected electron image of the magnetic carrier particle photographed by a SEM is divided into 72 with straight lines drawn from a reference point in a radial fashion towards the surface of the magnetic carrier particle at an interval of 5°; (a) the number “A” of the straight lines on which the distance from the surface of the magnetic carrier particle to the surface of the porous magnetic core particle is from 0.0 μm or more to 0.3 μm or less, is from 7 lines or more to 36 lines or less, among the 72 straight lines; (b) the number “B” of the straight lines on which the distance from the surface of the magnetic carrier particle to the surface of the porous magnetic core particle is from 1.5 μm or more to 5.0 μm or less, is from 7 lines or more to 36 lines or less, among the 72 straight lines; and (c) the number “C” of the straight lines on which the distance from the surface of the magnetic carrier particle to the surface of the porous magnetic core particle is from 0.0 μm or more to 5.0 μm or less, is 70 lines or more, among the 72 straight lines.