RECORDER

摘要

PURPOSE:To obtain images of high densities by specifying the volume average grain size of the 1st magnetic toner and forming this toner to the volume average grain size larger than the volume average grain size of the 2nd magnetic toner. CONSTITUTION:The volume average grain size of the 1st magnetic toner T1 which contains a magnetic material having the magnetic characteristics to allow permanent magnetization and forms the master images 52 by developing the electrostatic latent images formed on an image carrier 14 is specified to >=10mum. In addition, the same is formed to the volume average grain size larger than the volume average grain size of the 2nd magnetic toner T2 which develops the magnetic latent images formed on the master images 52 consisting of the 1st magnetic toner T1. The images of the practicably high densities are obtd. on paper in this way.