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:
Feb. 24, 2009
Filed:
Jan. 20, 2006
Takeshi Tsujino, Toride, JP;
Satoshi Iki, Mishima, JP;
Yoshinori Tsuji, Shizuoka-ken, JP;
Shinya Matsumura, Toride, JP;
Takeshi Tsujino, Toride, JP;
Satoshi Iki, Mishima, JP;
Yoshinori Tsuji, Shizuoka-ken, JP;
Shinya Matsumura, Toride, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a process for producing toner particles by granulation carried out in an aqueous medium, a process for producing toner particles is provided which toner particles have a sharp particle size distribution and can achieve a high image density. In a process for producing toner particles to be obtained by granulating in an aqueous medium a colorant composition containing at least a colorant, an apparatus which forms the toner particles by granulation has a granulation tank and a stirrer, and, where the internal volume of the granulation tank is represented by A (L) and the volume of an air layer portion in the interior of the granulation tank by B (L), the air layer portion proportion B/A satisfies the following expression (1):0.05≧B/A  (1).