公开(公告)号：DE2362915A1

公开(公告)日：1974-07-04

申请号：DE2362915

申请日：1973-12-18

Applicant: IBM

Inventor： BINGHAM RONALD EUGENE ,  CECIL II THOMAS FREDERICK ,  LEXINGTON KY ,  GALLI GUIDO ,  POQUETTE GEREON ELMER

IPC: G03G15/02

Abstract: A negatively biased corona discharge system includes a conductive electrode having a thin inorganic dielectric outer layer bonded thereto which is employed as a corona discharge electrode. The discharge system is utilized for uniformly placing a negative charge on an insulator substrate such as an electrophotographic imaging surface. The coating on the electrode acts to suppress the widely spaced emission nodes common to all negatively biased metal corona discharge electrodes. The coated electrode may, therefore, be placed in close proximity to the substrate which it is charging and operated at low emission densities without sacrificing charge uniformity thereby reducing the power requirement of the corona discharge system.

公开(公告)号：DE2257930A1

公开(公告)日：1973-06-20

申请号：DE2257930

申请日：1972-11-25

Applicant: IBM

Inventor： CECIL II THOMAS FREDERICK ,  DAVIDGE RONALD VAUGHN

IPC: G03G15/02 ,  H05F3/04