Toner production method

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United States of America Patent

PATENT NO 9429860
APP PUB NO 20140349232A1
SERIAL NO

14283923

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Abstract

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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):

description='In-line Formulae' end='lead'20≦T1≦Tp2  (1)description='In-line Formulae' end='tail'

(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.

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Patent Owner(s)

Patent OwnerAddress
CANON KABUSHIKI KAISHATOKYO JAPAN DAEJEON 3 MEATBALLS 30 2 TOKYO TOKYO METROPOLIS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aoki, Kenji Mishima, JP 178 2613
Kasuya, Takashige Numazu, JP 87 2246
Kaya, Takaaki Suntou-gun, JP 44 1038
Kinumatsu, Tetsuya Mishima, JP 37 654
Kosaki, Yusuke Susono, JP 21 517
Mori, Toshifumi Tokyo, JP 35 614
Nakagawa, Yoshihiro Numazu, JP 92 1261
Tani, Atsushi Suntou-gun, JP 105 1745
Watanabe, Shuntaro Hadano, JP 52 766

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