Ricoh Company, Ltd.

Takahiro Kadota

Hiroshi Takahashi

Noboru Kuroda

Akihiro Takeyama

Masato Kobayashi

Shinya Nakayama

Tsuyoshi Sugimoto

Yasuaki Iwamoto

Akinori Saitoh

Junichi Watanabe

Hideyuki Santo

Kohsuke Nagata

Shinsuke Nagai

Kenichi Uehara

Sayuri Kojima

Koh Ohnuma

Suzuka Karato

Ryuuta Yoshida

Yousuke Suzuki

Toshinobu Nishizaki

Kazuyuki Matsui

Masashi Miyakawa

Sayaka Yuasa

Osamu Kohzu

A toner is provided. The toner includes a resin and a fluorine-containing component. The toner satisfies the following formula:5.0&#x2264;&#x2264;25.0where F(atomic %) represents a content rate of fluorine atom in the toner determined by X-ray photoelectron spectroscopy (XPS) and F(weight %) represents another content rate of fluorine atom in the toner determined by X-ray fluorescence analysis (XRF).

Toner, developer, and image forming apparatus

A toner is provided. The toner includes an amorphous resin, a crystalline resin dispersed in the amorphous resin, and a release agent. The toner satisfies the following inequality:&#x3c;0.8where A represents a perimeter of the crystalline resin and B represents a length of a part of the perimeter A of the crystalline resin at which the crystalline resin is in contact with the amorphous resin, A and B being measured from a cross-sectional image of the toner observed with transmission electron microscope.

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

A toner, wherein the toner is obtained by washing a toner particle dispersion liquid which is obtained by adding cellulase to a dispersion slurry, and the dispersion slurry is obtained from a dispersion liquid or an emulsion of a toner material-containing oil phase in an aqueous medium, and wherein the dispersion liquid or the emulsion contains a cellulosic dispersion stabilizing agent.

Toner and method for producing toner

A cyclone classifier for classifying a particulate material, including an outer cylinder having a waistless part and an inverted-cone part vertically connected to an underside of the waistless part, and an inner cylinder which includes an exhaust opening such that the inner cylinder has a position-adjustable bottom end.

Cyclone classifier, flash drying system using the cyclone classifier, and toner prepared by the flash drying system

A method of manufacturing a toner including dissolving or dispersing a toner component containing a colorant and a resin in an organic solvent to obtain a liquid solution or dispersion, continuously emulsifying and dispersing the liquid solution or dispersion in an aqueous medium containing a particulate dispersant to obtain emulsified primary particles, controlling cohesion and agglomeration of the emulsified primary particles and removing the organic solvent, such that the ratio (T/T) of the arithmetic mean accumulation time (T) of the emulsified primary particles obtained in the controlling step to the arithmetic mean accumulation time (T) of the emulsified primary particles obtained in the continuously emulsifying and dispersing step is from 1 to 5.

Method of manufacturing toner, the toner produced thereby, developer containing the toner and an image forming apparatus using the toner

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Shizuoka, Japan

Takahiro Kadota