FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, FERRITE CARRIER AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE FERRITE CARRIER
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United States of America Patent
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Issued Date -
Oct 1, 2015
app pub date -
Mar 27, 2015
filing date -
Mar 27, 2014
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Abstract
There is provided a ferrite carrier core material for an electrophotographic developer, which includes ferrite particles. A volume average particle diameter of the ferrite particles is from 10 μm to less than 20 μm. Also, there is provided a ferrite core which includes the ferrite carrier core material, and a resin coating a surface of the ferrite carrier core material. Further, there is provided an electrophotographic developer which includes the ferrite carrier; and a toner, wherein a concentration of the toner is from 15 to 35 wt %.
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