Toshiba Tec Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Toshiba America Business Solutions, Inc.

Toshiba American Business Solutions, Inc.

Takumi Hatano

Hisanobu Ajima

Hiroshi Hashidume

Nobuo Tohata

Toru Homma

Takahiro Nakajima

A toner contains a crystalline polyester resin, a non-crystalline polyester resin A having a melting temperature ranging between 99° C. to 108° C., a non-crystalline polyester resin B having a melting temperature ranging between 140° C. to 150° C., an ester wax, and a colorant. A ratio of the crystalline polyester resin is 5% mass to 15% mass to a total T of the crystalline polyester resin, the non-crystalline polyester resin A, the non-crystalline polyester resin B, the ester wax, and the colorant. A ratio of the non-crystalline polyester resin A to the total T is between 50% mass to 60% mass. A ratio of the non-crystalline polyester resin B to the total T is between 20% mass to 30% mass.

Toner, toner cartridge, and image forming apparatus

A toner comprises toner particles containing a colorant, non-crystalline polyester, and crystalline polyester. The crystalline polyester does not contain an esterification catalyst and has a melting point in a range of 80 to 110&#xb0; C. A gel content of the toner particles is in the range of 4 to 11% by mass.

A toner cartridge for use with an image forming apparatus includes a memory storing identification data of the toner cartridge and parameter information including image formation process parameters dependent on toner characteristic or ambient conditions. A transceiver unit communicates with the image forming apparatus to send the process parameter information stored in the memory to the image forming apparatus when the identification data is authentic.

Toner cartridge with memory for image forming apparatus

An image forming apparatus mounted with a toner cartridge having a memory unit includes a toner cartridge which stores a plurality of control data depending on toner in the memory unit, an acquisition unit which selects one of the plurality of control data in the memory unit and acquires image formation-related information and a setting unit which sets image formation parameters on the basis of the image formation-related information.

Growing community of inventors

Yokohama Kanagawa, Japan

Takumi Hatano