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. 01, 2014
Filed:
Jul. 02, 2008
Fusako Kiyono, Kanagawa, JP;
Taichi Yamada, Kanagawa, JP;
Yosuke Tsurumi, Kanagawa, JP;
Akira Matsumoto, Kanagawa, JP;
Akihiro Iizuka, Kanagawa, JP;
Fusako Kiyono, Kanagawa, JP;
Taichi Yamada, Kanagawa, JP;
Yosuke Tsurumi, Kanagawa, JP;
Akira Matsumoto, Kanagawa, JP;
Akihiro Iizuka, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
An electrostatic charge image developer includes a toner containing an external additive and a carrier comprising a resin-coated layer formed on a surface of a core material. The average shape factor SF1 of the toner is from 125 to 135, the number of particles having shape factor SF1 of less than 125 is from 5% to 30% by number with respect to the total number of toner particles, the number of particles having shape factor SF1 of greater than 135 is from 5% to 30% by number with respect to the total number of toner particles, the scratch line width in a scratch strength test of the resin used in the resin-coated layer is from 80 μm to 200 μm, and the scratch depth is from 60 μm to 150 μm.