EP 0180378 B1 19900613 - CONTACT BRUSH CHARGING
Title (en)
CONTACT BRUSH CHARGING
Publication
Application
Priority
US 66582284 A 19841029
Abstract (en)
[origin: EP0180378A2] A contact brush charging device (11) for charging an insulating layer, especially the photoreceptor (13) in a xerographic repdocution apparatus, comprises a plurality of resiliently, flexible thin fibers (31) which have an electrical resistivity in the range from 10<2> to 10<6> ohms-cm and which are substantially resistivity stable to changes in relative humidity and temperature over the normal operating range and ageing. In a preferred embodiment the fibers are arranged in a uniform distribution along the length of the brush and comprise partially carbonized polyacrylonitrile fibers which have an electrical resistivity in the range from 10<3> to 10<5> ohms-cm and which are substantially homogeneous in composition.
IPC 1-7
IPC 8 full level
G03G 13/02 (2006.01); G03G 15/02 (2006.01); G03G 21/06 (2006.01)
CPC (source: EP)
G03G 15/0233 (2013.01); G03G 15/0291 (2013.01); G03G 21/06 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0180378 A2 19860507; EP 0180378 A3 19861210; EP 0180378 B1 19900613; DE 3578236 D1 19900719; JP H0675221 B2 19940921; JP S61109067 A 19860527
DOCDB simple family (application)
EP 85307466 A 19851016; DE 3578236 T 19851016; JP 23091185 A 19851016