Image forming apparatus including fixing device

An image forming apparatus comprising:

• a housing formed with an opening;
• a conveying member configured to convey a recording sheet;
• a nip member having a nip portion configured to nip the recording sheet in cooperation with the conveying member;
• an urging member configured to urge one of the conveying member and the nip member toward another of the conveying member and the nip member;
• a changing portion configured to change an urging force of the urging member;
• an opening/closing member configured to move between an opening position to uncover the opening and a closing position to cover the opening, the opening/closing member being configured to generate a moving force when being moved;
• a first transmission portion configured to be moved by the moving force and transmit the moving force to the changing portion;
• a motor configured to generate a drive force;
• a second transmission portion configured to transmit the drive force to the first transmission portion to generate the moving force;
• and
• a switching member configured to switch to one of a transmitting state and a cutoff state, the switching member interrupting the transmission of the drive force from the second transmission portion to the first transmission portion in the cutoff state, and the second transmission portion transmitting the drive force to the first transmission portion in the transmitting state.