A curing oven includes a set of pivoting, rotating trays within a curing chamber. The method comprises the step of preventing a write operation to a portion of the second storage layer located below a maiden portion of said first storage layer. The first torque is applied to the inertia lever when the inertial force is applied to the release button and the inertia lever in the release direction of the release button. Between the wear plates and the cooling body a highly heat-conductive soft silicone film is clamped, which ensures good heat transfer. Bump electrodes for external connection are provided on the connection pad portions for the electrodes.