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US Patent 7288348 Color toner

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Contents

Is a
Patent
Patent
0

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
0
Patent Number
72883480
Patent Inventor Names
Nobuyoshi Sugahara0
Nozomu Komatsu0
Takakuni Kobori0
Takayuki Itakura0
Akira Hashimoto0
Yasuhiro Ichikawa0
Tetsuya Ida0
Hirohide Tanikawa0
...
Date of Patent
October 30, 2007
0
Patent Application Number
109365650
Date Filed
September 9, 2004
0
Patent Citations Received
‌
US Patent 11698594 Toner
0
Patent Primary Examiner
‌
Mark A Chapman
0
Patent abstract

In a color toner having toner particles which have toner base particles containing a binder resin, a colorant and a wax, and inorganic fine particles, (i) in the toner base particles, particles having a circle-equivalent diameter of 3.00 μm or more as measured with a flow type particle image analyzer have an average circularity of from 0.920 or more to less than 0.950, (ii) in the particles having a circle-equivalent diameter of 3.00 μm or more in the toner base particles, particles having a circularity of 0.960 or more are in a number frequency cumulative value of 40% or less; and (iii) in the particles having a circle-equivalent diameter of 3.00 μm or more in the toner base particles, particles having a circularity of 0.920 or less are in a number frequency cumulative value of 30% or less. Also disclosed is a full-color image forming method making use of the toner.

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