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. 17, 2010
Filed:
Oct. 03, 2008
Shigeto Tamura, Suntou-gun, JP;
Takaaki Kaya, Suntou-gun, JP;
Ryoichi Fujita, Chofu, JP;
Makoto Kambayashi, Suntou-gun, JP;
Shigeto Tamura, Suntou-gun, JP;
Takaaki Kaya, Suntou-gun, JP;
Ryoichi Fujita, Chofu, JP;
Makoto Kambayashi, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The color toner has capsule type toner particles each having a surface layer (B) mainly formed of a resin (b) on the surface of a toner base particle (A) containing at least a binder resin (a), a colorant, and a wax, in which (1) a temperature Tp at which a curveobtained by plotting a temperature on an axis of abscissa and the common logarithm of a value obtained by dividing the loss modulus G″ of the color toner by the unit of the loss modulus on an axis of ordinate shows a maximum is present, and Tp satisfies the relationship of 40° C.≦Tp≦60° C., (2) a temperature Ts at which a curveobtained by differentiating the curvewith respect to the temperature twice shows a local minimum is present in the temperature range of Tp+10(° C.) to Tp+40(° C.), and (3) a ratio G″(Ts)/G″(Ts+5) in the curveis larger than 3.0.