Ricoh Company, Ltd.

Hideyuki Santoh

Kunio Arai

Tadafumi Ajiri

Kunitoshi Sugiyama

Yoshihiko Itoh

Shin Hasegawa

Tsuyoshi Sugimoto

Akinori Saitoh

Suzuka Amemori

Kohsuke Nagata

Koh Ohnuma

Toner that includes a polyester resin, fluorine and aluminum. The toner satisfies formulae (1) and (2),1.00&#x2267;&#x2267;0.50&#x2003;&#x2003;(1)0&#x2266;()/&#x2266;0.25&#x2003;&#x2003;(2)

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

A method for use in two-components electrostatic image developers is disclosed, in which secure separation of a carrier coating resinous materials from a core magnetic material is achieved without affecting the properties of the core materials through process steps benign to the environment in super- or sub-critical water compositions under the conditions of a temperature of 300&#xb0; C. or more and a pressure of 20 MPa. The core magnetic material is subsequently recycled for forming carrier. This method may also be useful for processing waste including magnetic materials with silicone resin coating.

System for separating electrophotographic carrier compositions and recycling the compositions

A method for use in two-components electrostatic image developers is disclosed, in which secure separation of a carrier coating resinous materials from a core magnetic material is achieved without affecting the properties of the core materials through process steps benign to the environment in super- or sub-critical water compositions under the conditions of a temperature of 300&deg; C. or more and a pressure of 20 MPa. The core magnetic material is subsequently recycled for forming carrier. This method may also be useful for processing waste including magnetic materials with silicone resin coating.

Method of separating electrophotographic carrier compositions and recycling the compositions

Growing community of inventors

Numazu, Japan

Hideyuki Santoh