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:
Jan. 22, 2008
Filed:
Mar. 21, 2003
Akihiro Kotsugai, Numazu, JP;
Kimitoshi Yamaguchi, Numazu, JP;
Naoki Imahashi, Mishima, JP;
Hiroaki Takahashi, Sunto-gun, JP;
Akihiro Kotsugai, Numazu, JP;
Kimitoshi Yamaguchi, Numazu, JP;
Naoki Imahashi, Mishima, JP;
Hiroaki Takahashi, Sunto-gun, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A carrier for use with a toner as a two-component type developer for developing an electrostatic image, comprising spherical magnetic core particles, and a resin layer covering each of said core particles and containing at least two resistance controlling materials having different specific resistances, wherein each of the resistance controlling materials is in the form of particles having a number average particle diameter of no more than 1/10 of a number average particle diameter of the toner.