Patent ID: 8247148
Filing Date: 2012-08-21
Classification: C01G,C01P,C09C,G03G

Abstract:
1. A resin-coated ferrite carrier for an electrophotographic developer comprising a ferrite carrier core material obtained by thermal spraying and including a surface, and a resin coated on the surface, the ferrite carrier core material having a BET specific surface area of 900 to 5,000 cm 2 /g, an apparent density of 2.40 to 2.70 g/cm 3 , a long axis/short axis ratio average value of 1.00 to 1.20, a standard deviation of the long axis/short axis ratio of 0.3 or less, and percentage of particles having a long axis/short axis ratio of 1.10 or more of no more than 15%.