Invention Grant
- Patent Title: Protective agent, image forming apparatus, and process cartridge
- Patent Title (中): 保护剂，成像设备和处理盒
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Application No.: US11931644Application Date: 2007-10-31
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Publication No.: US07653339B2Publication Date: 2010-01-26
- Inventor: Masahide Yamashita , Hiroshi Nakai , Masato Iio , Shinya Tanaka
- Applicant: Masahide Yamashita , Hiroshi Nakai , Masato Iio , Shinya Tanaka
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2006-315420 20061122
- Main IPC: G03G21/00
- IPC: G03G21/00
Abstract:
A protective agent for forming a protective layer on the surface of an image carrier includes at least a hydrophilic organic compound and an amphiphilic organic compound at a ratio of 1/99 to 20/80. Preferably, the hydrophilic organic compound contains at least one selected from a polysaccharide and a polyether compound, or the amphiphilic organic compound contains a nonionic surfactant.
Public/Granted literature
- US20080118286A1 PROTECTIVE AGENT, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE Public/Granted day:2008-05-22
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