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:
Apr. 18, 2006
Filed:
Oct. 01, 2003
Katsuyuki Nonaka, Ibaraki, JP;
Yushi Mikuriya, Shizuoka, JP;
Shinya Yachi, Shizuoka, JP;
Shuntaro Watanabe, Shizuoka, JP;
Katsuyuki Nonaka, Ibaraki, JP;
Yushi Mikuriya, Shizuoka, JP;
Shinya Yachi, Shizuoka, JP;
Shuntaro Watanabe, Shizuoka, JP;
Canon Kabushiki Kaisha, , JP;
Abstract
In a toner kit having i) a non-magnetic black toner having at least carbon black and ii) color toners, the black toner has a weight-average particle diameter represented by Dand a one-point method BET specific surface area represented by Sb, and the color toners, other than the black toner, each have a weight-average particle diameter represented by Dand a one-point method BET specific surface area represented by Sc, where the black toner and color toners satisfy the following relations (1) and (2):0.60≦≦0.96,  Relation (1)0.750≦≦1.000;  Relation (2)and each have an average circularity of from 0.950 to 1.000 and a circularity standard deviation of less than 0.040 as measured with a flow type particle image analyzer.