PURPOSE: To limit the flow of a current to a spark occurrence position by providing a contact consisting of conductive fibers and insulating fibers on a base through a high-resistance conductive layer.
CONSTITUTION: A base cloth 2 is adhered to a base 4 through a high-resistance conductive adhesive layer 9, and a contact 1 is a mixed bundle of conductive fibers 10 and insulating fibers 11. When a brush electrifier is brought into contact with a perforated part of a photosensitive body 8, spark discharge is caused between conductive fibers 10 and a conductive layer 6. When a large current tries to flow from a bias power source 5, it is limited by the resistance part of the high-resistance conductive adhesive layer 9, and therefore, the large current is not flowed to conductive fibers 10, and spark discharge is not intensified, and the voltage of the bias power source is hardly dropped by spark discharge.
OKUNO TATSUO
IWAOKA KAZUHIRO
SAGAMI SHIZUO
Next Patent: BRUSH ELECTRIFIER