A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, said main assembly including a main assembly drive transmission member and a main assembly urging member, said process cartridge comprising: (i) rotatable photosensitive member; (ii) a rotatable developing roller for developing a latent image formed on said photosensitive member, said developing roller being movable toward and away from said photosensitive member; (iii) an urging force receiving portion for receiving an urging force from the main assembly urging member to space said developing roller from said photosensitive member; (iv) a first drive transmission member (37; 1237; 1337; 74; 474; 8074; 8174) for receiving a rotational force from the main assembly drive transmission member; (v) a second drive transmission member (38; 1238; 1338; 71; 571; 8071; 8171) capable of coupling with said first drive transmission member (37; 1337; 74; 474; 8074; 8174) and capable of transmitting the rotational force received by said first drive transmission member (37; 1237; 1337; 74; 474; 8074; 8174) to said developing roller; and (vi) a coupling disconnection member (72; 1372; 272; 672; 6272; 772; 872; 8072; 8172; 8272) capable of urging at least one of said first drive transmission member (37; 1237; 1337; 74; 474; 8074; 8174) and said second drive transmission member (38; 1238; 1338; 71; 571; 8071; 8171) and allowing separation of one of said first drive transmission member (37; 1237; 1337; 74; 474; 8074; 8174) and said second drive transmission member (38; 1238; 1338; 71; 571; 8071; 8171) from the other in accordance with the urging force received by said urging force receiving portion, thereby disconnecting the coupling. (i) rotatable photosensitive member; (ii) a rotatable developing roller for developing a latent image formed on said photosensitive member, said developing roller being movable toward and away from said photosensitive member; (iii) an urging force receiving portion for receiving an urging force from the main assembly urging member to space said developing roller from said photosensitive member; (iv) a first drive transmission member (37; 1237; 1337; 74; 474; 8074; 8174) for receiving a rotational force from the main assembly drive transmission member; (v) a second drive transmission member (38; 1238; 1338; 71; 571; 8071; 8171) capable of coupling with said first drive transmission member (37; 1337; 74; 474; 8074; 8174) and capable of transmitting the rotational force received by said first drive transmission member (37; 1237; 1337; 74; 474; 8074; 8174) to said developing roller; and (vi) a coupling disconnection member (72; 1372; 272; 672; 6272; 772; 872; 8072; 8172; 8272) capable of urging at least one of said first drive transmission member (37; 1237; 1337; 74; 474; 8074; 8174) and said second drive transmission member (38; 1238; 1338; 71; 571; 8071; 8171) and allowing separation of one of said first drive transmission member (37; 1237; 1337; 74; 474; 8074; 8174) and said second drive transmission member (38; 1238; 1338; 71; 571; 8071; 8171) from the other in accordance with the urging force received by said urging force receiving portion, thereby disconnecting the coupling.