| 摘要 |
PURPOSE:To obtain the conductive roll with which a sufficient electrostatic charge quantity is obtainable and which has uniform electrostatic chargeability by forming a conductive layer of a conductive compsn. formed by dispersing and incorporating conductive powder and a porous packing material impregnated with a charge control agent into an org. high-polymer binder resin. CONSTITUTION:The conductive layer 11 is formed on the outer periphery of an arbor 10 by using the conductive compsn. dispersedly contg. the conductive powder and the porous packing material impregnated with the charge control agent in the org. high-polymer binder resin. The org. high-polymer binder resin is preferably a polyamide resin. The conductive powder is exemplified by metallic oxide powder, etc., such as carbon black and the content ratio thereof is preferably in a 5 to 30vol.% range in the conductive compsn. The porous packing material is exemplified by water absorptive and oil absorptive resins, etc., such as cellulose powder, wood meal, sepiolite, and silicon powder (oil absorptive). The charge control agent to be impregnated into the porous packing material is selected from various kinds of polymers, etc., according to the electrostatic charging of toners to minus and plus. |
