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. 21, 2018
Filed:
Apr. 13, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Masatake Tanaka, Yokohama, JP;
Nobuhisa Abe, Susono, JP;
Hidekazu Fumita, Gotemba, JP;
Masashi Kawamura, Yokohama, JP;
Shiro Kuroki, Suntou-gun, JP;
Kenji Ookuba, Numazu, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner having a toner particle containing a binder resin and a crystalline material, wherein when 'a' is an endothermic quantity deriving from the crystalline material in a DSC of the toner and 'b' is an endothermic quantity deriving from the crystalline material in a DSC of the toner that has been held for 10 hours in an environment with a temperature of 55° C. and a humidity of 8% RH, the “a” and “b” satisfy a relationship a/b≥0.85; in a dynamic viscoelastic measurement of a non-melt-molded pellet of the toner, the toner has a temperature range A for which G″≤1×10Pa and tan δ<1 are satisfied; and in a dynamic viscoelastic measurement of a melt-molded pellet of the toner, the toner has a temperature range B for which tan δ>1 is satisfied within the temperature range A.