Image forming apparatus

An image forming apparatus comprising:

• a rotatable image carrier;
• a charger for uniformly charging a surface of said image carrier;
• a pair of support plates supporting said image carrier at axially opposite ends of a rotary shaft on which said image carrier is mounted;
• a current feed path for charging along which a current is fed from a high-tension power supply for charging to said charger;
• and
• a current return path for allowing a current to flow from said image carrier to a ground of said high-tension power supply for charging;
• wherein the current flowing through said current return path is sensed in order to execute feedback control to an output of said high-tension power supply for charging, and
• one of said pair of support plates is openable and provided with a contact forming member comprising a member forming said current feed path for charging, a member forming said current return path and a plurality of contacts where said member forming said current return path and said image carrier contact each other.