PROCESS CARTRIDGE

There is provided a technique installing a memory on a developing cartridge and a drum cartridge, and capable of reducing the number of components in the developing cartridge. A drum cartridge 2 includes a first memory 71 having a first electrical contact surface, and an elastic member 300 that can expand and contract in a second direction. A developing cartridge 1 includes a second memory 81 having a second electrical contact surface, and a developing holder 82 holding the second electrical contact surface such that the second electrical contact surface is movable relative to a casing 10. The developing holder 82 is connected to the elastic member 300 and is movable in the second direction in a state where the developing cartridge 1 is attached to a drum frame 40. Accordingly, wear of the second electrical contact surface is restrained. Also, since an elastic member need not be provided in the developing holder 82, the number of components in the developing cartridge 1 can be reduced.