Abstract
In two-component magnetic brush development, an origin of the conductivity of magnetic brush was examined. It was supposed that supply toners in the magnetic brush for development contributed to conductivity of developers, and the relation of the conductivity to the toner concentration was formulated. Also, carrier rotations caused by the speed difference of photoconductor and development roller was supposed, and the equation expressing the developed toner mass dependence on the speed ratio was obtained. Each result well explained the experiment data of preceding studies.
