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:
Feb. 08, 2005
Filed:
Apr. 23, 2002
Yukinori Nakayama, Watarai-gun, JP;
Yojiro Sato, Watarai-gun, JP;
Hiroaki Moriyama, Watarai-gun, JP;
Masaki Ishii, Watarai-gun, JP;
Noriya Okamoto, Watarai-gun, JP;
Yukinori Nakayama, Watarai-gun, JP;
Yojiro Sato, Watarai-gun, JP;
Hiroaki Moriyama, Watarai-gun, JP;
Masaki Ishii, Watarai-gun, JP;
Noriya Okamoto, Watarai-gun, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
A toner, such as an electrostatic latent image developing toner and a MICR toner, has an even charge distribution, and exhibits balanced charging characteristics without decreases in frictional electrification or increases in charge, as well as superior fluidity, environmental independence, and durability. This is achieved by treating toner particles, which include binder resin and magnetic particles, with an external additive particle that is one of: a combination of rutile-type titanium oxide and anatase-type titanium oxide; and rutile-type titanium oxide that falls in a range of 5 to 10% by volume when a total volume of the toner is regarded as being 100%.