Approaches are provided for processing scan data based on a scan process definition that defines a set of instructions for acquiring image data based on one or more printed documents. The compositions can include curable base compositions and surfactant systems. With this configuration, the connection convenience is provided by guiding an external connection terminal to the corresponding connection terminal of the electronic device under a low luminance condition, and a control method thereof. Two first primary color pixels in the first and second LC layer interact with an adjacent second primary color pixel in the first LC layer and an adjacent third primary color pixel in the second LC layer for representing a display pixel. It is determined if a power supply voltage should be adjusted using a comparison based on the first number of stages and the second number of stages. A concentration and a level of an aqueous urea solution inside a urea tank 16 are detected, and the quality of the aqueous urea solution is diagnosed based on a detected value of the concentration of the aqueous urea solution when the level L is equal to or higher than a predetermined value.