Oblon, McClelland, Maier & Neustadt, L.L.P.
Toner, developer, and image forming apparatus
A toner, including: a copolymerization resin, wherein the copolymerization resin includes: a unit derived from a polyester resin including a polycarboxylic acid having a valence of 2 or more and a polyol having a valence of 2 or more; and a unit derived from a resin having a polyhydroxycarboxylic acid skeleton, where the unit derived from the resin having a polyhydroxycarboxylic acid skeleton is bonded to the unit derived from the polyester resin via at least one of a urethane group and a urea group, and wherein the toner has a relative degree of crystallization of 10% or more and less than 50%.
Ricoh Company, Ltd.
G G C G G G
G03G G03G C08G G03G G03G G03G
inventional inventional additional inventional inventional inventional
Daisuke Susumu Hiroshi Tsuyoshi Satoyuki
Asahina Chiba Yamashita Sugimoto Sekiguchi