IMAGE FORMING APPARATUS, AND TONER AND METHOD FOR MANUFACTURING TONER

To provide an image forming apparatus that can prevent the occurrence of medaka, dirt on an electrification roller, and adhesion of toner to an image carrier.SOLUTION: An image forming apparatus has: an electrostatic latent image carrier; electrification means that electrifies a surface of the electrostatic latent image carrier; exposure means that forms an electrostatic latent image on the electrified electrostatic latent image carrier; developing means that develops the electrostatic latent image by using toner to form a toner image; transfer means that transfers the toner image to a recording medium; and cleaning means that removes a toner remaining on the electrostatic latent image carrier after the toner image is transferred. The cleaning means and the electrification means are arranged side by side in this order along the direction of rotation of the electrostatic latent image carrier. The toner contains silica having an average primary particle diameter of 15 nm or more and 250 nm or less, and has zinc stearate that covers the surface of the silica. The abundance of zinc derived from the zinc stearate obtained by measuring 1 g of the toner by a fluorescent X-ray analyzer is 0.05 atom% or more and 3.0 atom% or less.SELECTED DRAWING: None 【課題】メダカの発生、帯電ローラの汚れ、及び像担持体へのトナーの固着を抑制できる画像形成装置の提供。【解決手段】静電潜像担持体と、前記静電潜像担持体表面を帯電させる帯電手段と、帯電された前記静電潜像担持体に静電潜像を形成する露光手段と、トナーを用いて前記静電潜像を現像してトナー像を形成する現像手段と、前記トナー像を記録媒体に転写する転写手段と、前記トナー像を転写した後の前記静電潜像担持体の上に残存するトナーを除去するクリーニング手段と、を有し、前記静電潜像担持体の回転方向に沿って前記クリーニング手段、前記帯電手段の順に並んで配置されており、前記トナーが、平均一次粒子径が１５ｎｍ以上２５０ｎｍ以下のシリカを含有し、前記シリカ表面を被覆するステアリン酸亜鉛を有し、１ｇの前記トナーを蛍光Ｘ線分析装置で測定した前記ステアリン酸亜鉛由来の亜鉛の存在量が０．０５ａｔｏｍ％以上３．０ａｔｏｍ％以下である、画像形成装置である。【選択図】なし