Patent ID: 9014577
Filing Date: 2015-04-21
Classification: G03G

Abstract:
1. A printing device comprising: a carrier supply maintaining carrier material; a tube operatively connected to said carrier supply; a developer station operatively connected to said tube; at least two sensors operatively connected to said tube; and a processor operatively connected to said sensors, said tube supplying an accumulation of said carrier material from said carrier supply to said developer station, said sensors being positioned a distance apart along a length of said tube, said sensors detecting said accumulation of said carrier material passing in said tube, said processor determining a speed of said accumulation of said carrier material moving within said tube based on a timing difference of when said sensors detect said accumulation of said carrier material, said processor determining a size of said accumulation of said carrier material based on said speed and on a pressure amount within said tube, and said processor determining a dispense rate of said carrier supply based on said size of said accumulation.