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:
Dec. 30, 2008
Filed:
Sep. 30, 2003
Yasuhito Yuasa, Katano, JP;
Kiminori Umeda, Amagasaki, JP;
Tetsuya Uemura, Kashiwa, JP;
Tsuyoshi Itagoshi, Matsudo, JP;
Yasuhito Yuasa, Katano, JP;
Kiminori Umeda, Amagasaki, JP;
Tetsuya Uemura, Kashiwa, JP;
Tsuyoshi Itagoshi, Matsudo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The present invention is a carrier for electrophotography in which a surface of at least a core material is coated with a resin, in which the coating resin contains a fluorine modified silicone resin and an aminosilane coupling agent, and in which the carrier charges a toner negatively. Consequently, a carrier with a high durability and a long lifetime for electrophotography is provided, in which the charge amount does not decrease at high temperature or high humidity nor extremely increase at low temperature or low humidity, in which a deterioration of a developing agent caused by stripping of a coating layer is prevented, and in which a deterioration caused by formation of spent toner of a toner is not caused.