US Patent 7653339 Protective agent, image forming apparatus, and process cartridge
Patent 7653339 was granted and assigned to RICOH COMPANY,LTD. on January, 2010 by the United States Patent and Trademark Office.
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Patent 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.
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Patent Inventor Names
Hiroshi Nakai0
Masahide Yamashita0
Masato Iio0
Shinya Tanaka0
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US Patent 07653339 Protective agent, image forming apparatus, and process cartridge US Patent 7653339 Protective agent, image forming apparatus, and process cartridge
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Patent Number
076533390
Patent Number
76533390
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Official Website
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Infobox
Is a
Current Assignee
0
Patent Jurisdiction
Patent Number
076533390
Date of Patent
January 26, 2010
0Patent Application Number
119316440
Date Filed
October 31, 2007
0Official Website
Patent Primary Examiner
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US Patent 07653339 Protective agent, image forming apparatus, and process cartridge
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07653339
Date of patent
January 26, 2010
Patent application number
11931644
Date Filed
October 31, 2007
Patent primary examiner
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