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:
Feb. 09, 2021
Filed:
May. 26, 2017
Haruki Murata, Kanagawa, JP;
Hiroyuki Kishida, Shizuoka, JP;
Toyoaki Tano, Shizuoka, JP;
Kenichi Mashiko, Shizuoka, JP;
Masato Taikoji, Shizuoka, JP;
Mariko Takii, Kanagawa, JP;
Yoshihiro Murasawa, Shizuoka, JP;
Haruki Murata, Kanagawa, JP;
Hiroyuki Kishida, Shizuoka, JP;
Toyoaki Tano, Shizuoka, JP;
Kenichi Mashiko, Shizuoka, JP;
Masato Taikoji, Shizuoka, JP;
Mariko Takii, Kanagawa, JP;
Yoshihiro Murasawa, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A carrier for developing an electrostatic latent image includes a core material particle and a resin layer covering a surface of the core material particle. The resin layer includes a resin and at least one kind of a fine particle. At least one kind of the fine particles includes a chargeable fine particle. The chargeable fine particle has a long diameter of 400 to 900 nm. The chargeable fine particle has a shape factor SF-1 of 160 to 250.