Invention Grant
- Patent Title: Carrier, two-component developer, supplemental developer, image forming method, process cartridge and image forming apparatus
- Patent Title (中): 载体，双组分显影剂，补充显影剂，成像方法，处理盒和成像装置
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Application No.: US14410711Application Date: 2013-06-26
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Publication No.: US09519234B2Publication Date: 2016-12-13
- Inventor: Hiroyuki Kishida , Shigenori Yaguchi , Hiroshi Tohmatsu , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano
- Applicant: Hiroyuki Kishida , Shigenori Yaguchi , Hiroshi Tohmatsu , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano
- 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: JP2012-143841 20120627; JP2013-046257 20130308
- International Application: PCT/JP2013/068193 WO 20130626
- International Announcement: WO2014/003200 WO 20140103
- Main IPC: G03G9/00
- IPC: G03G9/00 ; G03G9/083 ; G03G9/107 ; G03G9/113 ; G03G21/18 ; H01F1/01
Abstract:
There is provided a carrier including magnetic core particles; and a coating layer on a surface of each of the magnetic core particles, wherein the coating layer contains electroconductive particles; wherein the electroconductive particles are electroconductive particles in which white inorganic pigments are coated with phosphorus-doped tin or tungsten-doped tin; and wherein a dope ratio of phosphorus or tungsten to tin in the phosphorus-doped tin or tungsten-doped tin is 0.010 to 0.100.
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