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. 07, 2007
Filed:
Oct. 24, 2002
Yasushige Nakamura, Kawasaki, JP;
Tomoaki Tanaka, Kawasaki, JP;
Seijiro Ishimaru, Kawasaki, JP;
Sadaaki Yoshida, Kawasaki, JP;
Yoshimichi Katagiri, Kawasaki, JP;
Yasushige Nakamura, Kawasaki, JP;
Tomoaki Tanaka, Kawasaki, JP;
Seijiro Ishimaru, Kawasaki, JP;
Sadaaki Yoshida, Kawasaki, JP;
Yoshimichi Katagiri, Kawasaki, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A toner for electrophotography fulfilling both the fixability and the void resistance at high level, and forms a high-quality image. The toner for electrophotography contains: a binder resin; and a wax component which contains: a first wax having an endothermic peak in a temperature region of 60 to 90° C., the endothermic peak occurring in the temperature-rising stage of a DSC curve determined by a differential scanning calorimeter, and having a molecular weight distribution (weight-average molecular weight (Mw)/number-average molecular weight (Mn)) of 1.5 or less, and substantially not containing a component having 500 Mw or less; and at least any of a second wax having an endothermic peak in a temperature region of 100 to 150° C. and the molecular weight distribution of 5 to 20; and a third wax having an endothermic peak in a temperature region of 150 to 170° C. and the molecular weight distribution of 1.1 or more.