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. 05, 2018
Filed:
Mar. 03, 2017
Yoshihiro Murasawa, Shizuoka, JP;
Toyoaki Tano, Shizuoka, JP;
Hiroyuki Kishida, Shizuoka, JP;
Masato Taikoji, Shizuoka, JP;
Kenichi Mashiko, Shizuoka, JP;
Mariko Takii, Kanagawa, JP;
Haruki Murata, Kanagawa, JP;
Yoshihiro Murasawa, Shizuoka, JP;
Toyoaki Tano, Shizuoka, JP;
Hiroyuki Kishida, Shizuoka, JP;
Masato Taikoji, Shizuoka, JP;
Kenichi Mashiko, Shizuoka, JP;
Mariko Takii, Kanagawa, JP;
Haruki Murata, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A carrier for developing electrostatic latent images is provided. The carrier includes a magnetic core particle and a resin layer coating a surface of the magnetic core particle. The resin layer includes a particulate material A having a volume average particle diameter (a) and a particulate material B having a volume average particle diameter (b). The volume average particle diameter (a) of the particulate material A is the largest among volume average particle diameters of all particulate materials included in the resin layer, and an inequation 100≥(a)/(b)≥5 is satisfied. The particulate material A is barium sulfate.