Clean Carrier Cores for Electrophotography

Abstract
Most carrier cores for electrophotography are made from Cu-Zn or Ni-Zn ferrites. But in recent years, the use of these materials has been restricted by environmental regulations in many countries. In answer, we have developed clean carrier cores from environmentally friendly magnetic materials. One such material is magnetite, which we at FDK Corporation mass-produce by using an original production method. This magnetite has single phase and high-purity properties. The other is clean ferrite, which is a new non-hazardous composite magnetic material designed to meet customers' strict requirements.