A process cartridge attachable to and detachable from an image forming device includes a photosensitive drum that is configured to form an electrostatic latent image, a flange that is arranged to the photosensitive drum, including a cylindrical attachment part, a frame that rotatably holds the flange, and a load member that is slidably press-fitted to the attachment part of the flange. Each of the posts has a first contact surface disposed at the first package face and a second contact surface disposed at the second package face. The substrate is then heated to recrystallize the channel portion and the sourcedrain portions of the amorphized semiconductor region. The opening in the support base prevents an interference with the movement of the crank arm, and this allows the crank arm and an associated link mechanism to be placed opposite to a vertically intermediate part of the support base, and immediately adjacent to the support base.