A process cartridge (50, 250, 350, 450, 650, 750, 850) detachably mountable to a main assembly (100, 401) of an electrophotographic image forming apparatus, the main assembly including a first force application member (61, 165, 261, 361, 461, 761) and a second force application member (60, 164, 263, 360, 460, 760, 860), the process cartridge comprising: an electrophotographic photosensitive drum (30, 230, 330, 430, 630, 730, 830); a developing roller (42, 142, 242, 342, 442, 542, 642, 742) for developing an electrostatic latent image formed on the electrophotographic photosensitive drum; a drum unit (31, 231, 331, 431, 531, 631, 731) including the electrophotographic photosensitive drum; a developing unit (41, 241, 341, 441, 541, 641, 741, 841) including the developing roller and movable relative to the drum unit between a contact position in which the developing roller is in contact with the electrophotographic photosensitive drum and a spaced position in which the developing roller is spaced from the electrophotographic photosensitive drum; and a force receiving device (90, 190, 277, 370, 490, 690, 790, 890) including (i) a first force receiving portion (75, 179, 277a, 370a, 475, 575, 675, 775, 875) adapted to receive a first force from the first force application member in a first direction, and (ii) a second force receiving portion (70, 178, 277b, 370b, 470, 670, 770, 870) (ii-i) movable, using the first force received by the first force receiving portion, toward a projected position in which the second force receiving portion is projected outwardly of the developing unit from a stand-by position in which the second force receiving portion is retracted from the projected position toward the inside of the developing unit and (ii-ii) adapted to receive a second force from the second force application member in a direction substantially opposite to the first direction to move the developing unit from the contact position to the spaced position when the second force receiving portion takes the projected position. an electrophotographic photosensitive drum (30, 230, 330, 430, 630, 730, 830); a developing roller (42, 142, 242, 342, 442, 542, 642, 742) for developing an electrostatic latent image formed on the electrophotographic photosensitive drum; a drum unit (31, 231, 331, 431, 531, 631, 731) including the electrophotographic photosensitive drum; a developing unit (41, 241, 341, 441, 541, 641, 741, 841) including the developing roller and movable relative to the drum unit between a contact position in which the developing roller is in contact with the electrophotographic photosensitive drum and a spaced position in which the developing roller is spaced from the electrophotographic photosensitive drum; and a force receiving device (90, 190, 277, 370, 490, 690, 790, 890) including (i) a first force receiving portion (75, 179, 277a, 370a, 475, 575, 675, 775, 875) adapted to receive a first force from the first force application member in a first direction, and (ii) a second force receiving portion (70, 178, 277b, 370b, 470, 670, 770, 870) (ii-i) movable, using the first force received by the first force receiving portion, toward a projected position in which the second force receiving portion is projected outwardly of the developing unit from a stand-by position in which the second force receiving portion is retracted from the projected position toward the inside of the developing unit and (ii-ii) adapted to receive a second force from the second force application member in a direction substantially opposite to the first direction to move the developing unit from the contact position to the spaced position when the second force receiving portion takes the projected position.