CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPING AGENT, PROCESS FOR PRODUCING THE CARRIER CORE MATERIAL, CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPING AGENT, AND ELECTROPHOTOGRAPHIC DEVELOPING AGENT

摘要

This invention provides a carrier for an electrophotographic developing agent, which can realize an improved image quality and a full color image and, at the same time, has reduced carrier scattering properties, a process for producing the carrier, and an electrophotographic developing agent comprising the carrier. A carrier core material for an electrophotographic developing agent represented by general formula Mg_xMn_(1-x)Fe_yO₄, wherein 0 < x < 1, 1.6 = y = 2.4, and satisfies, in an XRD pattern, B = 0.180 (degree) wherein B represents the half value width of a peak having the highest intensity.