| 摘要 |
PURPOSE:To obtain a carrier good in durability by forming a ferrite film specified in composition on the surface of particles composed essentially of iron. CONSTITUTION:The carrier for developing an electrostatic charge image is obtained by forming a ferrite film having a composition of MO.Fe2O3, M being a divalent metal atom, such as Fe, Ni, Co, Mn, Zn, Cu, Sn, or Pb, or an optional plural combination of then on the surfaces of particles composed essentially of iron. The 0.1-10 mum thick ferrite film 2 is formed on the surfaces of the core particles 1 of 10-300 mum particle diameter composed essentially of iron to form the carrier, thus parmitting the carrier to be prevented from scattering and attaching and improved in development performance. |
