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:
Jul. 04, 2006
Filed:
Jun. 27, 2003
Kazuhiko Yanagida, Minamiashigara, JP;
Nobumasa Furuya, Ebina, JP;
Takashi Yukutake, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
An electrophotographic developer is provided for realizing high-quality images and superior reproducibility of laser dots in a low coverage region and reduced unevenness of color in halftone solid images. The electrophotographic developer includes a toner and a carrier. The toner has a shape factor of 140 or less and a volume average particle size distribution GSDv of 1.3 or less. The carrier has a coat resin layer on a core material, the coat resin layer containing a conductive powder. The core material has a dynamic electric resistivity of 1 Ω·cm or less under an electric field of 10V/cm in a form of a magnetic brush. The conductive powder has an electric resistivity of 10Ω·cm or greater and 10Ω·cm or less. The carrier has an electric resistivity in a range between 10 and 1×10Ω·cm. An image forming method is also provided wherein the electrophotographic developer is used for development in a developing stage.