IMAGE FORMING DEVICE AND PROCESS CARTRIDGE

摘要

PROBLEM TO BE SOLVED: To provide an image forming device in which potential by electrification on a drum is stably applied even after long-term use and scattering, the scraping of the drum and image defects such as fog, drops and voids are not caused. SOLUTION: An image is formed with the image forming device having a magnetic brush comprising magnetic particles having 104-109Ωcm volume resistance as a contact electrifying member and containing a toner containing a polymer of a vinyl monomer whose chromatogram measured by gel permeation chromatography has at least one maximum value in each of the molecular weight ranges of 1×103-8×104 and 1×105-2×106 as a bonding resin.