FLUOSCENT MATERIAL SUPPLY APPARATUS FOR MANUFACTURING DRY ELECTROPHOTOGRAPHICAL TYPE SCREEN IN CATHODE RAY TUBE

摘要

PURPOSE: A fluorescent material supply apparatus for manufacturing a dry electrophotographical type screen in a cathode ray tube capable of uniformly supplying a fluorescent material from a hopper to a venturi tube regardless of amount and pressure a fluorescent material powder in a hopper in a development process for manufacturing a dry electrophotographical type screen is provided. CONSTITUTION: The fluorescent material supply apparatus for manufacturing a dry electrophotographical type screen in a cathode ray tube, the apparatus comprising: a hopper(148) containing a fluorescent material and having a venturi tube(146), a fluorescent material supply pipe(147), and a nozzle(144b) therein; a gate(149) for adjustably supplying the fluorescent material in the hopper(148); a turn table(154) rotated by a motor(152) for supplying the fluorescent material from the gate(149) in a direction of an upper face thereof; first and second scraping plates(156,158) installed at an outer periphery of the turn table(154) in an upper portion of the venturi tube(146) for falling predetermined amount of the fluorescent material to the venturi tube(146).