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. 18, 2000
Filed:
Sep. 04, 1998
Tomoyasu Umeno, Hachioji, JP;
Ryuji Kitani, Hachioji, JP;
Tatsuya Nagase, Hachioji, JP;
Meizo Shirose, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
A carrier for developing an electrostatic latent image is disclosed. The carrier comprises a magnetite core and a resin coated on the magnetite core wherein the magnetite core contains FeO and Fe.sub.2 O.sub.3, the mole ratio of FeO/Fe.sub.2 O.sub.3 being 0.15/1.0 to 0.7/1.0, and the carrier contains a magnesium atom containing material at a surface of the carrier, magnesium atom content ratio at the surface being 1.5 to 5.0 (percent in the number of atoms). A developer for developing an electrostatic latent image using the carrier and a developing method using the carrier or the developer is also disclosed.