Blending chamber for electrostatic processors

Abstract From the Canadian patent

A blender for blending a mixture of flowable materials, such as the carrier and toner components of a developer for an electrostatic processor comprises a, rotatable chamber having radially angulated passageways extending through its periphery for guiding the materials into and out of the chamber. The passageways are open but the mixture tends to at least temporally dwell in the chamber and is, therefore, subjected to a tumbling action because the radial angulation of the passageways exceeds the angle of repose of the mixture. Continuous and discontinuous blenders embodying these principles are disclosed.