Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Resin particle, toner, and image forming method and process cartridge using the same
Disclosed is a resin particle having a volume average particle diameter of 10 nm to 500 nm, obtained by polymerizing an addition polymerizable monomer containing a silsesquioxane (a) represented by Formula (I) or by copolymerizing the silsesquioxane (a) with an addition polymerizable monomer (b),where R1 to R7 each independently represent a group selected from the group consisting of hydrogen, alkyl having 1 to 40 carbon atoms, substituted or unsubstituted aryl, and substituted or unsubstituted arylalkyl; any hydrogen in the alkyl group is optionally substituted by fluorine and any —CH2— is optionally substituted by —O—, —CH═CH—, cycloalkylene or cycloalkenylene; any hydrogen in alkylene in the arylalkyl group is optionally substituted by fluorine and any —CH2— is optionally substituted by —O— or —CH═CH—; and A1 represents an addition polymerizable functional group.
Ricoh Company, Ltd. JNC Corporation
G G G G G G G G G G Y G
G03G G03G G03G G03G G03G G03G G03G G03G G03G G03G Y10T G03G
inventional inventional additional inventional inventional inventional inventional inventional inventional inventional additional additional
Mikio Tsuneyasu Shinichi Naohiro Kenya Masaki Tsuyoshi Naohito Hiroshi
Yamahiro Nagatomo Wakamatsu Watanabe Itoh Watanabe Sugimoto Shimota Yamashita