Invention Grant
- Patent Title: Carrier for developer of electrostatic latent image, developer, and image forming apparatus
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Application No.: US15730795Application Date: 2017-10-12
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Publication No.: US10254674B2Publication Date: 2019-04-09
- Inventor: Masahiro Seki , Hiroyuki Kishida , Haruki Murata , Shinya Nakagawa , Kei Niwayama , Saori Yamada , Kohsuke Miyazaki
- Applicant: Masahiro Seki , Hiroyuki Kishida , Haruki Murata , Shinya Nakagawa , Kei Niwayama , Saori Yamada , Kohsuke Miyazaki
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2016-206076 20161020
- Main IPC: G03G9/107
- IPC: G03G9/107 ; G03G9/113 ; G03G15/08

Abstract:
A carrier for a developer of an electrostatic latent image, the carrier including: core particles having magnetism; and a coating layer coating a surface of each of the core particles, wherein the coating layer includes two or more kinds of inorganic particles, at least one kind of inorganic particles among the two or more kinds of inorganic particles is inorganic particles A having conductivity and a peak particle diameter of from 300 nm through 1,000 nm, and surface roughness of the carrier calculated by Formula 1 below is from 1.10 m2/g through 1.90 m2/g, C−F Formula 1 where C is a BET specific surface area (m2/g) of the carrier and F is a BET specific surface area (m2/g) of the core particles.
Public/Granted literature
- US20180113393A1 CARRIER FOR DEVELOPER OF ELECTROSTATIC LATENT IMAGE, DEVELOPER, AND IMAGE FORMING APPARATUS Public/Granted day:2018-04-26
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