In an inkjet printer having primary power-turn-on means for physically supplying power to the printer and secondary power-turn-on means for bringing the printer into a state where functions are enabled, ink consumption due to a suction recovery processing is reduced. The seat body is provided with a plurality of fins that project therefrom and that are spaced apart from each other. The filter medium and the captured material are separated by melting the filter medium. The property deterioration material layer contains a material for deteriorating the property of the organic semiconductor and deterioration of the organic semiconductor layer is started, for example, by diffusing the material into the organic semiconductor layer. The ratio of the area of the antireflective layer to that of the sub-pixel is between about 60% to about 87%.