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:
Apr. 20, 2010
Filed:
Mar. 27, 2008
Syuhei Moribe, Numazu, JP;
Katsuhisa Yamazaki, Numazu, JP;
Daisuke Yoshiba, Suntou-gun, JP;
Hirata Junko, Suntou-gun, JP;
Masami Fujimoto, Suntou-gun, JP;
Takashige Kasuya, Suntou-gun, JP;
Syuhei Moribe, Numazu, JP;
Katsuhisa Yamazaki, Numazu, JP;
Daisuke Yoshiba, Suntou-gun, JP;
Hirata Junko, Suntou-gun, JP;
Masami Fujimoto, Suntou-gun, JP;
Takashige Kasuya, Suntou-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention aims to provide a toner having excellent developability and excellent low-temperature fixability without causing adhesion of ejected sheets even in a high-speed oilless fixing system and capable of preventing a frameless printing from causing a twisted offseting phenomenon. Specifically, provided is a toner having toner particles including at least a binder resin and a colorant, in which, when the toner is dissolved in a tetrahydrofuran (THF) solvent at 25° C. for 24 hours, the ratio of a THF-soluble matter having an intrinsic viscosity of 5.0×10dl/g or less with respect to the total amount of the THF-soluble matter in a GPC-RALLS-viscometer analysis is 15.0 mass % to 60.0 mass %, and the ratio of a THF-soluble matter having an intrinsic viscosity of 1.5×10dl/g or more with respect to the total amount of the THF-soluble matter in a GPC-RALLS-viscometer analysis is 20.0 mass % to 40.0 mass %.