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. 09, 2014
Filed:
Oct. 03, 2011
Kenta Kamikura, Mishima, JP;
Kazumi Yoshizaki, Suntou-gun, JP;
Yasushi Katsuta, Susono, JP;
Kenichi Nakayama, Numazu, JP;
Shiro Kuroki, Suntou-gun, JP;
Kenta Kamikura, Mishima, JP;
Kazumi Yoshizaki, Suntou-gun, JP;
Yasushi Katsuta, Susono, JP;
Kenichi Nakayama, Numazu, JP;
Shiro Kuroki, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The invention provides a toner that is capable of low-temperature fixing even in high-speed electrophotographic processes while keeping the cleaning performance when used at high temperatures and the high-temperature storage stability. This toner having toner particles, each of which contains a binder resin and a colorant is characterized in that the temperature of Tp [° C.] when the loss elastic modulus obtained by dynamic viscoelastic measurements on the toner exhibits a maximum value in the temperature range from at least 30° C. to not more than 200° C., is from at least 40° C. to not more than 55° C., and in that, with G″(Tp) [Pa] being this maximum value, G″(Tp+15) [Pa] being the loss elastic modulus at the temperature of Tp+15 [° C.], and G″(Tp+30) [Pa] being the loss elastic modulus at the temperature of Tp+30 [° C.], G″(Tp), G″(Tp+15), and G″(Tp+30) satisfy prescribed relationships.