Ferrite carrier core material for electrophotographic developer, carrier for electrophotographic developer, and developer
AssigneePowdertech Co., Ltd.
InventorsYuzuru YAMASAKI, Takao SUGIURA, Takeshi NAITO, Tetsuya UEMURA
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Abstract
Provided are a ferrite carrier core material for an electrophotographic developer having a full length L1 of grain boundary and a circumference length L2 of the core material in a cross-section of the core material, and satisfying a relationship of 2≤L1/L2≤9; a carrier for an electrophotographic developer including the ferrite carrier core material and a coating layer containing a resin provided on a surface of the ferrite carrier core material; and an electrophotographic developer including the carrier and a toner.
Claims10
A ferrite carrier core material for an electrophotographic developer,
- having a full length L1 of grain boundary and a circumference length L2 of the core material in a cross-section of the core material, and
- satisfying a relationship of 2≤L1/L2≤9.
Dependencies are inferred from the claim text.