Methods for producing toner particle and producing resin particle

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United States of America Patent

PATENT NO 10078280
APP PUB NO 20170363979A1
SERIAL NO

15623161

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Abstract

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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.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aoki, Kenji Numazu, JP 178 2613
Kasuya, Takashige Numazu, JP 87 2246
Kinumatsu, Tetsuya Mishima, JP 37 654
Koji, Shinnosuke Yokohama, JP 16 137
Kosaki, Yusuke Susono, JP 21 517
Mori, Toshifumi Tokyo, JP 35 614
Nakahama, Kazumichi Suntou-gun, JP 46 269
Suda, Sakae Yokohama, JP 83 842
Tani, Atsushi Tokyo, JP 105 1745
Toyoizumi, Noritaka Mishima, JP 17 319
Watanabe, Shuntaro Hadano, JP 52 766

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