Ricoh Company, Ltd.

Masayuki Ukigaya

Daisuke Inoue

Hiroshi Yamada

Mitsuaki Hirose

Kenji Komito

Yohichi Kitagawa

Junichi Awamura

Kohsuke Nagata

Hiroyuki Takeda

A toner is provided. The toner comprises toner particles each comprising a toner base particle and an external additive. The toner base particle comprises a binder resin and a colorant. The toner satisfies the following conditions (a) and (b):

Toner, developer, toner accommodating unit, image forming apparatus, and image forming method

A toner is provided. The toner comprises toner base particles, resin particles adhered to surfaces of the toner base particles, and an external additive adhered to the surfaces of the toner base particles. The toner base particles each comprising a binder resin, a colorant, and a wax. The toner has a storage elastic modulus G' of 4.0×10or less at 70° C. An embedment degree of the external additive is from 15% to 40%, as the embedment degree is measured by stirring 10 g of the toner and 20 g of a carrier in a 50-mL vial at 67 Hz for 60 minutes using a rocking mill.

Toner, method for manufacturing the toner, toner accommodating unit, image forming apparatus, and image forming method

A toner is provided. The toner comprises a colorant, a release agent, and a binder resin. The binder resin comprises a crystalline polyester resin and an amorphous polyester resin. The amorphous polyester resin comprises an amorphous polyester resin A and an amorphous polyester resin B. The amorphous polyester resin A comprises an isocyanurate backbone and at least one of urethane bond and urea bond. The amorphous polyester resin B comprises a trimellitic acid backbone and at least one of urethane bond and urea bond.

Toner, toner storage unit, image forming apparatus, and image forming method

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Shizuoka, Japan

Masayuki Ukigaya