An electrophotographic image forming apparatus having a process cartridge detachably mountable to a main assembly of the electrophotographic image forming apparatus, the apparatus including a first engageable member (8R, 8L) movable between a first contacting position and a second retracted position and a second engageable member (42R, 42L) movable between a third contacting position and a fourth retracted position, said process cartridge being transportable while being in a mounted state in the main assembly of the electrophotographic image forming apparatus, said process cartridge comprising: an electrophotographic photosensitive drum; a developing roller for developing an electrostatic latent image formed on said electrophotographic photosensitive drum; a first frame supporting said electrophotographic photosensitive drum; a second frame (30, 31, 32R, 32L) supporting said developing roller, said second frame (30, 31, 32R, 32L) being movably connected with said first frame; a first force receiving portion (32aR, 32aL) adapted to receive, from the first engageable member (8R, 8L), a force for separating said electrophotographic photosensitive drum and said developing roller from each other by contacting to the first engageable member (8R, 8L), when said process cartridge is mounted to the main assembly of the electrophotographic image forming apparatus, and the first engageable member (8R, 8L) is placed at the first contacting position; a second force receiving portion (32cR, 32cL) adapted to receive a contact force from the second engageable member (42R, 42L) when the second engageable member (42R, 42L) is placed at said third contacting position, for keeping said electrophotographic photosensitive drum and said developing roller spaced from each other and for separating the first engageable member (8R, 8L) and said first force receiving portion (32aR, 32aL) from each other when said process cartridge is mounted to the main assembly of the electrophotographic image forming apparatus; wherein when said process cartridge is transported while being in a mounted state in said main assembly of the electrophotographic image forming apparatus, said second engageable member (42R, 42L) is arranged at said third contacting position, wherein said first force receiving portion (32aR, 32aL) and said second force receiving portion (32cR, 32cL) are disposed at positions which are different from each other in terms of an axial direction of the photosensitive drum. an electrophotographic photosensitive drum; a developing roller for developing an electrostatic latent image formed on said electrophotographic photosensitive drum; a first frame supporting said electrophotographic photosensitive drum; a second frame (30, 31, 32R, 32L) supporting said developing roller, said second frame (30, 31, 32R, 32L) being movably connected with said first frame; a first force receiving portion (32aR, 32aL) adapted to receive, from the first engageable member (8R, 8L), a force for separating said electrophotographic photosensitive drum and said developing roller from each other by contacting to the first engageable member (8R, 8L), when said process cartridge is mounted to the main assembly of the electrophotographic image forming apparatus, and the first engageable member (8R, 8L) is placed at the first contacting position; a second force receiving portion (32cR, 32cL) adapted to receive a contact force from the second engageable member (42R, 42L) when the second engageable member (42R, 42L) is placed at said third contacting position, for keeping said electrophotographic photosensitive drum and said developing roller spaced from each other and for separating the first engageable member (8R, 8L) and said first force receiving portion (32aR, 32aL) from each other when said process cartridge is mounted to the main assembly of the electrophotographic image forming apparatus; wherein when said process cartridge is transported while being in a mounted state in said main assembly of the electrophotographic image forming apparatus, said second engageable member (42R, 42L) is arranged at said third contacting position, wherein said first force receiving portion (32aR, 32aL) and said second force receiving portion (32cR, 32cL) are disposed at positions which are different from each other in terms of an axial direction of the photosensitive drum.