Canon U.S.A. Inc., IP Division
Methods for producing toner particle and producing resin particle
A method for producing a toner particle include: (a) mixing a binder resin A, resin fine particles containing a resin B, a resin C, an organic solvent, and carbon dioxide, thereby forming a droplet of a resin solution containing the binder resin A, covered with the resin fine particles; (b) applying a pressure by introducing carbon dioxide, thereby precipitating the resin C at the surface of the droplet; and (c) passing carbon dioxide so as to remove the organic solvent from the droplet with the carbon dioxide. The resin C has an organic polysiloxane structure and a weight average molecular weight of 50,000 to 500,000. The ratio of the weight average molecular weight to the number average molecular weight of the resin C is not more than 5.0. The proportion of the resin C to the rein fine particles is 5.0% by mass to 50.0% by mass.
Canon Kabushiki Kaisha
C G G G C G G G G
C08L G03G G03G G03G C08F G03G G03G G03G G03G
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Toshifumi Kenji Tetsuya Shinnosuke Sakae Noritaka Yusuke Kazumichi Atsushi Takashige Shuntaro
Mori Aoki Kinumatsu Koji Suda Toyoizumi Kosaki Nakahama Tani Kasuya Watanabe