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:
Jan. 09, 2007
Filed:
Mar. 25, 2004
Keiji Komoto, Shizuoka, JP;
Yasushi Katsuta, Shizuoka, JP;
Yushi Mikuriya, Shizuoka, JP;
Takeshi Kaburagi, Shizuoka, JP;
Emi Tosaka, Shizuoka, JP;
Keiji Komoto, Shizuoka, JP;
Yasushi Katsuta, Shizuoka, JP;
Yushi Mikuriya, Shizuoka, JP;
Takeshi Kaburagi, Shizuoka, JP;
Emi Tosaka, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner includes toner particles and an inorganic fine powder mixed with the toner particles. The toner particles contain a binder resin, a coloring agent, a releasing agent, and a sulfur-containing resin. The toner particles contain at least one element selected from the group consisting of magnesium, calcium, barium, zinc, aluminum, and phosphorus and satisfy the relationship:4≦≦30wherein T represents the total content of the element in ppm, and S represents the content of sulfur in ppm. The weight-average particle diameter (D) of the toner is in the range of 3 to 10 μm. The average circularity of the toner is within the range of 0.950 to 0.995.