PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE AND INDIVIDUAL DISCRIMINATING METHOD FOR PROCESS CARTRIDGE

PROBLEM TO BE SOLVED: To grasp the use circumstances of an individual cartridge on an image forming device side and to facilitate life control such as successive detection of residual amount of toner by individually discriminating the cartridge of the same kind. SOLUTION: The cartridge B side is equipped with a resistor 130, a capacitor and a coil having different electric characteristic, and an image forming device main body side is equipped with a measuring means measuring their electric characteristic and a memory means in which information on the individual cartridge is written. In the case of printing, dots or the revolving speed of a drum are counted, an integrated value is written in the memory and an effect that the life ends is displayed when the integrated value attains a specified value on the image forming device.