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:
Apr. 17, 2018
Filed:
May. 04, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Yusuke Hasegawa, Suntou-gun, JP;
Tomohisa Sano, Mishima, JP;
Yoshitaka Suzumura, Mishima, JP;
Takuma Ikejiri, Suntou-gun, JP;
Shohei Yamashita, Mishima, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner comprises toner particles, each of which contains a binder resin, a colorant, a wax and a crystalline polyester. The melting point P(t) of the crystalline polyester is at least 65.0° C. and not more than 80.0° C., and regarding a storage elastic modulus G' obtained in dynamic viscoelasticity measurement of the toner, where G′ at 50° C. is denoted by G′(50), G′ at 80° C. is denoted by G′(80), G′ at 120° C. is denoted by G′(120), and G′ at the melting point P(t) of the crystalline polyester is denoted by G′(t), the following formulas are satisfied: 4.2×10Pa≤G′(50), 3.0×10≤G′(50)/G′(80), and G′(t)/G′(120)≤7.0×10.