Patent ID: 8679721
Filing Date: 2014-03-25
Classification: B82Y,G03G

Abstract:
1. An image forming method comprising: using a charging device to impart a predetermined potential to a circumferential surface of a photoreceptor drum, using an exposure device to form an electrostatic latent image on the circumferential surface of the photoreceptor drum, using a developing device and a toner to develop the electrostatic latent image on the circumferential surface of the photoreceptor drum, and to thereby form a toner image on the circumferential surface of the photoreceptor drum, using a transfer device to transfer the toner image formed on the photoreceptor drum to a sheet, using a cleaning device to remove from the photoreceptor drum residual toner that remains on the circumferential surface of the photoreceptor drum after transferring the toner image to the sheet, wherein the toner is an electrostatic charge image developing toner in which an external additive is added to toner base particles, wherein the external additive comprises inorganic fine particles attached with conductive fine particles, and the conductive fine particles are attached to the inorganic fine particles such that an existence ratio of the conductive fine particles in a non-transferred toner (conductive fine particles/non-transferred toner) is 9.5 to 30 times an existence ratio of the conductive fine particles in an initial toner (conductive fine particles/initial toner), the non-transferred toner being a toner that remains on a surface of a photoreceptor after the toner image is transferred.