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Title:
MAGNETIC MATERIAL-CONTAINING RESIN CARRIER, TWO-COMPONENT DEVELOPER, DEVELOPING DEVICE AND IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2009015084
Kind Code:
A
Abstract:

To provide a carrier which reliably prevents carrier deposition on a photoreceptor by increasing the contact area of carriers and the contact area of the carrier and a developing roller, and which can form a high-quality image free of image deficits, and a two-component developer.

The columnar carrier is obtained by crushing a filiform product obtained by a spinning method by which a melt-kneaded product containing a resin and a magnetic material is extruded in filaments and cooled. Since the carrier has a larger contact area of carrier particles and a larger contact area of the carrier and a developing roller as compared with a spherical carrier, the adherence of carriers to each other and the adherence of the carrier to the developing roller can be increased, accordingly the carrier reliably prevents carrier deposition on a photoreceptor and can form a high-quality image free of image deficits.


Inventors:
TOIZUMI KIYOSHI
Application Number:
JP2007177811A
Publication Date:
January 22, 2009
Filing Date:
July 05, 2007
Export Citation:
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Assignee:
SHARP KK
International Classes:
G03G9/107; G03G9/08; G03G9/113
Attorney, Agent or Firm:
Keiichiro Saikyo
Takeshi Sugiyama