Canon Kabushiki Kaisha

Shohei Fukuya

Masao Suzuki

Takeshi Yamamoto

Kenji Aoki

Sakae Suda

Yasunori Chigono

Atsushi Tani

Shuntaro Watanabe

Atsushi Nakamoto

Takahiro Kawamoto

Kazuyuki Sato

Tetsuya Kinumatsu

Masayoshi Kato

Kazumichi Nakahama

Makoto Fukatsu

Yusuke Kosaki

Noritaka Toyoizumi

Toshifumi Mori

Maki Okajima

Shinnosuke Koji

A method of producing a toner including the steps of: mixing resin fine particles, an organic solvent, and a resin R with a dispersion medium containing carbon dioxide, to prepare a dispersion of resin R-containing droplets; and removing the organic solvent by flowing carbon dioxide, wherein the resin fine particles contain one or more resins that have a partial structure A, B, and C, and are soluble in chloroform; the SP value of the partial structure A, the resin R, and the partial structure B satisfy particular relationships; a resin A constituted of the partial structure A and a resin B constituted of the partial structure B are soluble in the organic solvent; and a resin C constituted of the partial structure C is insoluble in the organic solvent.

Resin fine particles, method of producing resin fine particles, method of producing resin particles, and method of producing toner

A toner comprising a toner particle that contains a binder resin, wherein the surface of the toner particle is covered with a resin A; the modulus of elasticity Ea of the resin A and the modulus of elasticity Eb of the binder resin satisfy the following formula:0.5&#x2264;()&#xd7;100&#x2264;50.0; andthe adhesion force Aof the toner particle is at least 500 nN when a probe having spherical SiOattached at the tip of a cantilever is pressed into the toner particle at 3 &#x3bc;N.

Toner

Growing community of inventors

Tokyo, Japan

Shohei Fukuya