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:
Nov. 08, 2011
Filed:
Nov. 22, 2005
Koji Abe, Numazu, JP;
Satoshi Handa, Suntoh-gun, JP;
Shinya Yachi, Mishima, JP;
Kazumi Yoshizaki, Suntoh-gun, JP;
Emi Tosaka, Suntoh-gun, JP;
Yasuhiro Hashimoto, Mishima, JP;
Yushi Mikuriya, Mishima, JP;
Hitoshi Itabashi, Yokohama, JP;
Koji Abe, Numazu, JP;
Satoshi Handa, Suntoh-gun, JP;
Shinya Yachi, Mishima, JP;
Kazumi Yoshizaki, Suntoh-gun, JP;
Emi Tosaka, Suntoh-gun, JP;
Yasuhiro Hashimoto, Mishima, JP;
Yushi Mikuriya, Mishima, JP;
Hitoshi Itabashi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a chart of molecular weight distribution measured of a toner, i) the toner has a main peak in the region of molecular weight of 16,000 to 60,000, and ii) where the molecular weight at the main peak is represented by M1, and where the height at the molecular weight M1 is represented by H(M1), the height at a molecular weight of 4,000 by H(4000) and the height at a molecular weight of 15,000 by H(15000), the H(4000), the H(15000) and the H(M1) satisfy a specific proportion. The toner has a weight-average molecular weight (Mw) of 15,000 to 80,000, and, in an endothermic chart, i) the toner has an endothermic main peak in the range of 40 to 130° C., and ii) the calorimetric integral value represented by the peak area of the endothermic main peak is 10 to 35 J per 1 g of the toner.