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:
Aug. 30, 2016
Filed:
May. 21, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Tetsuya Kinumatsu, Mishima, JP;
Shuntaro Watanabe, Hadano, JP;
Kenji Aoki, Mishima, JP;
Atsushi Tani, Suntou-gun, JP;
Yoshihiro Nakagawa, Numazu, JP;
Takaaki Kaya, Suntou-gun, JP;
Toshifumi Mori, Tokyo, JP;
Yusuke Kosaki, Susono, JP;
Takashige Kasuya, Numazu, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A method for producing a toner that comprises toner particles, each of which comprises a binder resin, which comprises a resin (A) capable of forming a crystalline structure, and a colorant, the method including: a pressure holding step of, after preparing toner particles, holding the toner particles for 5 minutes or more at a pressure of 2.0 MPa or more under conditions of a temperature T1 (° C.) represented by formula (1):20≦1≦2  (1)(wherein, Tp2 represents the onset temperature of the maximum endothermic peak derived from the resin (A)), wherein a peak temperature Tp1 of the maximum endothermic peak derived from the resin (A) during the first temperature rise of the toner particles as determined by differential scanning calorimetric measurement is 50° C. to 90° C.