| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a device for image formation and toner which does not cause fogging, re-transferring and blister. SOLUTION: The device for image formation is equipped with at least a latent image carrying body, an electrifying device to electrify the latent image carrying body, a latent image forming device to expose the electrified latent image carrying body to form a latent image on the carrying body, a developing device to develop the latent image on the latent image carrying body with the toner, a transfer device to transfer the toner image on the latent image carrying body to a transfer material, and a fixing device to fix the toner image on the transfer material to the transfer material. The toner contains as external additives, first inorganic fine particles consisting of oxides of metals selected from titanium, aluminum, zinc and zirconium and having 80 to 800 nm average primary particle size, second inorganic fine particles selected from materials except for silica and having <80 nm average primary particle size, and silica fine particles having <30 nm average primary particle size, and contains particles having 1 to 2μm diameter in terms of circles by 20 to 30% expressed in the number of pieces.</p> |
