The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 2007
Filed:
Sep. 09, 2004
Kazuhiko Hayami, Ibaraki, JP;
Tetsuya Ida, Shizuoka, JP;
Nozomu Komatsu, Shizuoka, JP;
Yasuhiro Ichikawa, Kanagawa, JP;
Akira Hashimoto, Shizuoka, JP;
Hirohide Tanikawa, Shizuoka, JP;
Takakuni Kobori, Shizuoka, JP;
Takayuki Itakura, Shizuoka, JP;
Hiroyuki Fujikawa, Kanagawa, JP;
Koh Ishigami, Shizuoka, JP;
Nobuyoshi Sugahara, Shizuoka, JP;
Kazuhiko Hayami, Ibaraki, JP;
Tetsuya Ida, Shizuoka, JP;
Nozomu Komatsu, Shizuoka, JP;
Yasuhiro Ichikawa, Kanagawa, JP;
Akira Hashimoto, Shizuoka, JP;
Hirohide Tanikawa, Shizuoka, JP;
Takakuni Kobori, Shizuoka, JP;
Takayuki Itakura, Shizuoka, JP;
Hiroyuki Fujikawa, Kanagawa, JP;
Koh Ishigami, Shizuoka, JP;
Nobuyoshi Sugahara, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
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.