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Title:
TWO-COMPONENT DEVELOPER AND DEVELOPING METHOD
Document Type and Number:
Japanese Patent JP2000131891
Kind Code:
A
Abstract:

To provide a two-component developer with which good image reproducibility and enough image density can be obtd. by contact development using a toner which is prepared by fixing carbon black on the surface of toner particles and which has excellent productivity.

In the two-component developer consisting of a toner containing at least toner particles and magnetic carrier, 1 to 10 wt.% (based on the toner particles) carbon black is fixed on the surface of the toner particles. The toner has ≥1×108 Ω.cm specific resistance. The carrier is comprised at least of a thermosetting binder resin and metal oxide, and the carrier is obtd. by direct polymn. The carrier has ≥1×1012 Ω.cm specific resistance.


Inventors:
TOKUNAGA YUZO
BABA YOSHINOBU
Application Number:
JP30350998A
Publication Date:
May 12, 2000
Filing Date:
October 26, 1998
Export Citation:
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Assignee:
CANON KK
International Classes:
G03G9/08; G03G9/113; G03G15/08; G03G15/09; (IPC1-7): G03G9/113; G03G9/08; G03G15/08; G03G15/09
Attorney, Agent or Firm:
Keisuke Watanabe (1 person outside)