A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The drive unit 2 controls its specific operation on the basis of the first control information and the peripheral unit 3 controls its specific operation on the basis of the second control information. The color of the liquid paint system including the color effect-providing pigment substantially matches the color of the powder paint system that includes the metallic pigment. A first seal engages the first surface of the receptacle and the third surface of the pressure regulator.