(19)
(11) EP 0 146 825 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.12.1986 Bulletin 1986/52

(43) Date of publication A2:
03.07.1985 Bulletin 1985/27

(21) Application number: 84114583

(22) Date of filing: 30.11.1984
(84) Designated Contracting States:
BE DE FR GB IT NL SE

(30) Priority: 30.11.1983 US 556529

(71) Applicant: BURROUGHS CORPORATION (a Michigan corporation)
 ()

(72) Inventors:
  • Kasu, Abdullatif M.
     ()
  • Robson Thomas
     ()
  • Fedder, Richard C.
     ()
  • Thompson, Aubrey E.
     ()

   


(54) Electrostatic dust repeller for electrophotographic apparatus


(57) Automatic toner dust repelling apparatus for electrophotographic printers including oppositely disposed electrically charged members arranged on opposite sides of the magnetic brush generating roll with the respective electrical charges on the toner material and the electrically charged member being the same electrical polarity effective to repell toner dust from the adjacent edges of the magnetic bush roller and to concentrate the toner at the magnetic brush area thereby eliminating the toner dust problem.






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