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:
Jul. 30, 2013
Filed:
Feb. 19, 2010
Ayako Sekikawa, Susono, JP;
Takaaki Kaya, Suntou-gun, JP;
Atsushi Tani, Suntou-gun, JP;
Shigeto Tamura, Suntou-gun, JP;
Ayako Sekikawa, Susono, JP;
Takaaki Kaya, Suntou-gun, JP;
Atsushi Tani, Suntou-gun, JP;
Shigeto Tamura, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A magenta toner characterized by satisfying, in DSC measurement, 40.0≦Tg(0.5)≦60.0 and 2.0≦Tg(4.0)−Tg(0.5)≦10.0, wherein when preparing a solution of which the magenta toner is dissolved in ethyl acetate, and defined the concentration of the thereof as C(mg/ml), and the light absorbance thereof at a wavelength of 538 nm as A(ethyl acetate), the ratio of A(ethyl acetate)to Csatisfies the formula, A(ethyl acetate)/C<0.15, and, when preparing a solution of which the magenta toner is dissolved in chloroform, and defined the concentration of the thereof as C(mg/ml), and the light absorbance thereof at a wavelength of 538 nm as A(chloroform), the ratio of A(chloroform)to Csatisfies the formula, 2.00<A(chloroform)/C<6.55.