Developer and image forming apparatus
AssigneesToshiba Tec Kabushiki Kaisha, Kabushiki Kaisha Toshiba
InventorKoichi Kuroyama
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Abstract
A developer according to an embodiment includes toner particles, wherein the toner particles contain an amorphous polyester resin, a crystalline polyester resin, a coloring material, and a charge control agent containing metal elements of aluminum and magnesium, and have an endothermic peak temperature as measured by a differential scanning calorimeter (DSC) of from 90 to 100° C. and an acid value of from 9 to 19 mgKOH/g.
Claims20
A developer comprising toner particles containing an amorphous polyester resin, a crystalline polyester resin, a coloring material, and a charge control agent containing metal elements of aluminum and magnesium, and having an endothermic peak temperature as measured by a differential scanning calorimeter (DSC) of from 90 to 100° C. and an acid value of from 9 to 19 mgKOH/g.
An image forming apparatus, comprising an image carrier for forming an electrostatic latent image thereon, a toner for use in developing an electrostatic latent image on the image carrier, and a developing device for accommodating a developer containing the toner therein,
- the toner containing an amorphous polyester resin, a crystalline polyester resin, a coloring material, and a charge control agent containing metal elements of aluminum and magnesium, and having an endothermic peak temperature as measured by a differential scanning calorimeter (DSC) of from 90 to 100° C. and an acid value of from 9 to 19 mgKOH/g.
Dependencies are inferred from the claim text.