Coarse particle separator for toner particles

Details Coarse particle separator for toner particles Coarse particle separator for toner particles

1991-10-31

1992-12-29

Dayoan, D. Glenn

Classifying, separating, and assorting solids

Plural, diverse separating operations

Gaseous suspension and sifting

209 28, 209138, B07B 900

Patent

active

051744554

ABSTRACT:
A coarse particle separator for separating and collecting coarse toner particles having a size greater than substantially 500 microns comprises a tank having an inlet and an outlet, the separation being performed within the tank. The inlet to the tank is located at a lower portion of the tank and is connected to an eductor station by an eductor line. Particles are introduced to the inlet by the eductor line at a velocity of approximately 4500 ft/min. The separation of coarse and light toner particles can be performed by reducing the flow velocity so the coarse particles settle out by their own weight. A flow baffle made of a 75 micron screen hinders the passage of coarse particles. The outlet outputs light toner particles to at least one toner storage bin. Alternatively, the tank can have a conical-shaped upper portion which induces a cyclone effect in the flow of toner particles, the cyclone effect resulting in the collection of coarse particles in the lower portion of the tank. The apex of the conical-shaped upper portion terminates in the outlet. The inlet is located at a side of the tank such that a clearance is provided below the inlet for collection of the coarse toner particles.

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