CARTRIDGE UTILIZING A PLURALITY OF CONTACT CHARGING MEMBERS

摘要

Cartridge contains a brush charger and printer contains a charge roller. Upon installation of the cartridge a top shutter is moved downward and the charge roller is moved by a pivoted arm through the opening left by the shutter to contact a photoconductor drum in the cartridge. In operation the roller functions after charging by the brush at a potential to control the final charge on a photoconductor prior to xerographic imaging. The precharging by the brush greatly reduces deterioration of the charge roller, permitting long machine life with the accurate and uniform operation of a charge roller.