Invention Grant
- Patent Title: Method for regenerating carrier core material for electrophotography, method for manufacturing carrier for electrophotography, and carrier for electrophotography
- Patent Title (中): 电子照相用载体芯材的再生方法，电子照相用载体的制造方法以及电子照相用载体
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Application No.: US13625422Application Date: 2012-09-24
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Publication No.: US08968976B2Publication Date: 2015-03-03
- Inventor: Takayuki Shimizu , Kazumi Ohtaki , Shinichiro Yagi , Takeshi Sako , Idzumi Okajima
- Applicant: Takayuki Shimizu , Kazumi Ohtaki , Shinichiro Yagi , Takeshi Sako , Idzumi Okajima
- Applicant Address: JP Tokyo JP Shizuoka-shi
- Assignee: Ricoh Company, Ltd.,National University Corporation Shizuoka University
- Current Assignee: Ricoh Company, Ltd.,National University Corporation Shizuoka University
- Current Assignee Address: JP Tokyo JP Shizuoka-shi
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2011-209577 20110926
- Main IPC: G03G9/113
- IPC: G03G9/113 ; G03G9/10 ; G03G9/107
Abstract:
A method for regenerating a carrier core material for electrophotography, including: treating a carrier for electrophotography including a carrier core material for electrophotography and a coating layer on a surface of the carrier core material for electrophotography with an aqueous solution including an oxidant in a subcritical state or a supercritical state having a temperature of 280° C. or greater and a density of 0.20 g/cm3 or greater, wherein an amount of the oxidant in a total amount of the aqueous solution used in the treating is greater than 0.05 parts by mass with respect to 1 part by mass of the carrier for electrophotography to be treated in the treating.
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