The toner for the electrophotography and the developer for the electrophotography which uses that, the picture formation device and picture formation method

摘要

This invention, substantially weakness or being nonmagnetic, production characteristic being satisfactory the black pigment which has specified grain size as the coloration material for the toner by using, is superior in development quality, designates that sufficient density and the fixation characteristic picture which is superior the toner etc for the formation possible electrophotography are offered as purpose. It contains manganese and the iron and it includes with the particle and the binding resin which possess hematite structure, in the aforementioned particle, manganese content 3 - 30 weight %, mean diameter 0.01 - 2.0 millimicrons, saturation magnetization (s) is the toner for the electrophotography which features that it is below 2emu/g.