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:
Nov. 12, 2019
Filed:
Sep. 14, 2018
Mariko Takii, Kanagawa, JP;
Koichi Sakata, Shizuoka, JP;
Tohru Suganuma, Shizuoka, JP;
Masahiro Seki, Shizuoka, JP;
Masashi Nagayama, Shizuoka, JP;
Shinya Nakagawa, Shizuoka, JP;
Kei Niwayama, Shizuoka, JP;
Mariko Takii, Kanagawa, JP;
Koichi Sakata, Shizuoka, JP;
Tohru Suganuma, Shizuoka, JP;
Masahiro Seki, Shizuoka, JP;
Masashi Nagayama, Shizuoka, JP;
Shinya Nakagawa, Shizuoka, JP;
Kei Niwayama, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Provided is a carrier for a developer of an electrostatic latent image, the carrier including a core particle, and a resin layer covering the core particle, where the resin layer includes metal compound particles, wherein the metal compound particles include magnesium compound particles or barium compound particles, and an exposed amount B (atomic %) of the magnesium or the barium on a surface of the carrier particle satisfies a relationship below:10.0≥B ≥1.2.