Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshinobu Baba0
Nozomu Komatsu0
Takayuki Itakura0
Tomoko Endo0
Chika Inoue0
Hiroyuki Fujikawa0
Koh Ishigami0
Kunihiko Nakamura0
Date of Patent
March 20, 2012
Patent Application Number
12691049
Date Filed
January 21, 2010
Patent Citations Received
Patent Primary Examiner
Patent abstract
A magnetic carrier is provided which uses a toner having high coloring power and enables development to be performed at low electric field intensity and can form high quality images while keeping gradation characteristics. The magnetic carrier includes magnetic carrier particles including at least porous magnetic core particles and a resin. The electric field intensity just before the break-down of the magnetic carrier is 1,300 V/cm or more and 5,000 V/cm or less.
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