A DEVELOPING DEVICE FOR MANUFACTURING A DRY-TYPE PHOTOGRAPHICAL SCREEN OF CATHODE RAY TUBE

摘要

The present invention provides a developing apparatus for producing a dry electrophotographic screen of a cathode ray tube.;The developing apparatus includes a phosphor supply pipe 150 for supplying a phosphor to the developing container 142 via a venturi tube 146 from the hopper 148; A coater composed of a corona charging electrode and a nozzle (144a) for charging and injecting the phosphor powder at an end of the phosphor supply pipe (150) in the developing ware; And it is characterized in that it comprises a triboelectric charge tube 150 is installed in the middle of the phosphor supply pipe 150 and the electrostatic charge to the phosphor powder by friction with the phosphor powder passing through the inside.;Accordingly, the triboelectric charge tube 150 may be charged in advance, and later, only a low voltage and a short time may be charged from the corona charging electrode 144b of the coater, thereby saving energy and rapidly generating free ions. There is an effect such that it is reduced to not interfere with the phenomenon.