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:
Sep. 10, 2019
Filed:
Feb. 06, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Shinnosuke Koji, Yokohama, JP;
Sakae Suda, Yokohama, JP;
Yusuke Kosaki, Susono, JP;
Shohei Fukuya, Tokyo, JP;
Tetsuya Kinumatsu, Mishima, JP;
Kenji Aoki, Numazu, JP;
Toshifumi Mori, Tokyo, JP;
Shuntaro Watanabe, Hadano, JP;
Noritaka Toyoizumi, Mishima, JP;
Atsushi Tani, Tokyo, JP;
Kazumichi Nakahama, Sunto-gun, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
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.