CARRIER CORE FOR ELECTRONOGRAPH DEVELOPER, CARRIER FOR ELECTRONOGRAPH DEVELOPER, AND ELECTRONOGRAPH DEVELOPER

摘要

The carrier core particles for electrophotographic developer have a volume size distribution with a median particle size ranging from 30 µm to 40 µm, the ratio of the carrier core particles having a diameter of 22 µm or lower in the volume size distribution is from 1.0% to 2.0%, the ratio of the carrier core particles having a diameter of 22 µm or lower in a number size distribution is 10% or lower, and the magnetization of the carrier core particles in an external magnetic field of 1000 Oe is from 50 emu/g to 75 emu/g.