Sharp Kabushiki Kaisha Corporation

Hiroki Maeda

Tadanori Kano

Keiichi Kikawa

Yoritaka Tsubaki

Osamu Wada

Takeshi Katoh

Yuya Kondo

Takao Yamada

Shoji Nakai

The toner includes an external additive adhering to the surface of a toner particle. The external additive contains fine powder in which the surface of a core derived by addition of silica to strontium titanate is hydrophobized with a silane compound, and silica.

Toner and two-component developer

The toner has a toner matrix particle containing a crystalline polyester resin. Associated silica including two or more of primary particles is present on the surface of the toner matrix particle. The coverage with associated silica onto the toner matrix particle is 1% or more to 30% or less, and the adherence strength of associated silica to the toner matrix particle is 20% or more to 90% or less.

Toner, two-component developer, and image-forming apparatus

A toner contains at least a crystalline polyester resin and an amorphous linear polyester resin that uses diethylene glycol as an alcohol component, and a monoester wax and a montan ester wax as release agent components, wherein 6&#x2264;&#x3b1;&#x2264;8 and 14&#x2264;mw/&#x3b1;&#x3c;30 are satisfied, where &#x3b1; represents an amount of the crystalline polyester resin added relative to 100 parts by weight of the amorphous linear polyester resin and mw represents an amount of the montan ester wax added.

Toner, two-component developer, and method for producing toner

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Sakai, Japan

Hiroki Maeda