Invention Grant
US09298119B2 Carrier for two-component developer, two-component developer using the carrier, and image forming method and process cartridge using the two-component developer
有权
用于双组分显影剂的载体，使用载体的双组分显影剂，以及使用双组分显影剂的成像方法和处理盒
- Patent Title: Carrier for two-component developer, two-component developer using the carrier, and image forming method and process cartridge using the two-component developer
- Patent Title (中): 用于双组分显影剂的载体，使用载体的双组分显影剂，以及使用双组分显影剂的成像方法和处理盒
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Application No.: US14167468Application Date: 2014-01-29
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Publication No.: US09298119B2Publication Date: 2016-03-29
- Inventor: Shigenori Yaguchi , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano , Hiroyuki Kishida , Kenichi Mashiko , Hiroshi Tohmatsu
- Applicant: Shigenori Yaguchi , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano , Hiroyuki Kishida , Kenichi Mashiko , Hiroshi Tohmatsu
- 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: JP2013-042215 20130304
- Main IPC: G03G9/113
- IPC: G03G9/113 ; G03G9/107 ; G03G21/18
Abstract:
A carrier is provided. The carrier includes a particulate magnetic core, and a cover layer located on the surface of the particulate magnetic core and including a resin and a filler. When determined from observation of cross-section of the carrier, the shape factor SF2 of the carrier is from 120 to 160, the ratio of the average domain diameter of the particulate magnetic core to the number average particle diameter of the filler is from 1:1 to 1:0.003, and the area ratio of the filler in the cover layer is from 30 to 85%.
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