Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Electrostatic image forming toner and developer
An electrostatic image forming toner including: toner base particles each containing at least a colorant, a binder resin, and a releasing agent, wherein the binder resin contains a non-crystalline polyester resin A and a crystalline polyester resin B, wherein a ratio of B/(A+B)×100 is 10 or more but less than 50 where (A+B) is a total mass of the non-crystalline polyester resin A and the crystalline polyester resin B and “B” is a mass of the crystalline polyester resin B, and wherein the toner base particles have a TMA compression deformation amount (TMA %) of 10% or less which is measured at 50° C. and a relative humidity of 90%.
Ricoh Company, Ltd.
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Taichi Hiroshi Tsuyoshi Daisuke Shingo Yoshitaka Rintaro Satoyuki
Nemoto Yamashita Sugimoto Asahina Sakashita Yamauchi Takahashi Sekiguchi