Patent ID: 8337620

Claim:
An apparatus for processing coating material, comprising: a crucible having a cylindrical receptacle for receiving coating material therein; a drive member comprising a drive shaft; a cover coupled to the drive shaft, the cover including a flat surface, a slot defined in the flat surface, a first through hole and a second through hole, the first through hole and the second through hole respectively communicating with opposite ends of the slot, the drive shaft configured to drive the cover to rotate thereabout between a closed position where the cover covers the receptacle with the slot disposed along a diametrical direction of the receptacle and aligned with the receptacle along a central axis direction of the receptacle, and the flat surface presses against the coating material to flatten the coating material, and an open position where the cover is moved away from the receptacle; and a monitor system comprising a light source facing the first through hole, configured to emit light through the first through hole to illuminate the coating material received in the receptacle, and a camera module facing the second through hole, configured to capture images of the illuminated coating material through the second through hole.