Patent ID: 7853172
Filing Date: 2010-12-14
Classification: G03G

Abstract:
1. An image forming device comprising: an image holding member that is driven to rotate; a charging member that, by contacting a surface of the image holding member and rotating in accordance with rotation of the image holding member, contact-charges the image holding member; a latent image-forming unit that forms an electrostatic latent image on the image holding member that has been charged by the charging member; a developing unit that develops the electrostatic latent image formed on the image holding member with a developer including a toner and a carrier to form a toner image in accordance with the electrostatic latent image, the toner comprising an external additive having first inorganic particles with a volume average particle diameter of about 80 nm to about 300 nm and second inorganic particles with a volume average particle diameter of about 7 nm to about 60 nm, and the carrier including a core material having a magnetic powder dispersed in a resin and a resin covering layer that covers the core material; a transfer unit that transfers the toner image to a transfer-receiving member; a removal unit that removes adherents on the image holding member; and an aggregation-forming unit that, by contacting a surface of the charging member and rotating in accordance with rotation of the charging member, removes adherents that have adhered to the surface of the charging member, including the first inorganic particles, from the surface of the charging member, and forms aggregations in which the removed first inorganic particles are aggregated.