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:
Jun. 30, 2020
Filed:
Apr. 30, 2019
Konica Minolta, Inc., Tokyo, JP;
Futoshi Kadonome, Sagamihara, JP;
Keiji Arai, Higashimurayama, JP;
Junichi Furukawa, Hino, JP;
Ikuko Sakurada, Hachioji, JP;
KONICA MINOLTA, INC., Tokyo, JP;
Abstract
Provided is an electrostatic charge image developer containing toner particles and carrier particles, wherein the toner particles contain at least silica particles or alumina particles as an external additive; the carrier particles contain core material particles and a coating resin layer covering a surface of the core particles; the coating resin layer contains metal oxide particles; an element measured by XPS (photoelectron spectroscopy) of the carrier particle is at least Si or Al; and a content of Si or Al in the carrier particle is in the range of 1 to 6 at % with respect to the total elements constituting the carrier particles.