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. 14, 2010
Filed:
Jul. 06, 2009
Takaaki Kaya, Suntou-gun, JP;
Shigeto Tamura, Suntou-gun, JP;
Ryoichi Fujita, Chofu, JP;
Ayako Sekikawa, Susono, JP;
Makoto Kambayashi, Suntou-gun, JP;
Takaaki Kaya, Suntou-gun, JP;
Shigeto Tamura, Suntou-gun, JP;
Ryoichi Fujita, Chofu, JP;
Ayako Sekikawa, Susono, JP;
Makoto Kambayashi, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An object of the present invention is to provide a spherical toner that has a sharp particle size distribution and a small particle diameter. This is a capsule-type toner that exhibits an excellent low-temperature fixability, while at the same time having a high offset resistance and excellent charging properties and having the ability to provide a high-quality image in which the characters, lines, and dots are precisely defined. The object is achieved by a toner comprising a toner particle that comprises at least (a) resin having polyester as the main component, colorant, wax, and (b) urethane resin, wherein the hydroxyl value per specific surface area of the toner particle is fall into the specific range, and wherein a Tg(0.5) and a Tg(4.0)-Tg(0.5) of the toner fall into specific range.