Patent ID: 6743558
Filing Date: 2004-06-01
Classification: G03G

Abstract:
A carrier for electrophotographic developer comprising carrier particles, each carrier particle comprising a magnetic core particle and a resin layer formed on the surface of said magnetic core particle, and said carrier having a magnetic moment of 76 emu/g or more at 1 KOe, and said carrier particles having a weight-average particle diameter (Dw) in a range of 25 to 45 micrometer, and said carrier particles comprising:(1) carrier component particles having a diameter of less than 44 micrometer in an amount of 75 wt. % or more, (2) carrier component particles having a diameter of 62 micrometer or more in an amount of less than 1 wt. %, and (3) carrier component particles having a diameter of less than 22 micrometer in an amount of 7.0 wt. % or less, based on the total amount of said carrier particles.