CARTRIDGE, IMAGE FORMING DEVICE AND AN IMAGE FORMING SYSTEM

摘要

PROBLEM TO BE SOLVED: To accurately detect the quantity of developer at any time, even if there is variation in the manufacture of a flat surface antenna itself or variation that is generated, in the manufacture of a cartridge due to displacement of the flat surface antenna inside a developer-storing container. SOLUTION: The detected value of the toner quantity by the flat surface antenna 6 is corrected, by storing an output value of the flat surface antenna 6 before a toner seal member S of a process cartridge B is removed to a storage means 20 of the process cartridge B.