An image display apparatus has a data display region on which image data is displayed, and a user interface region on which a plurality of icon images are displayed. The apparatus includes a planarizing unit preferably having an optical flat flexible sheet and a backup optical flat body, and a curing assembly. an orthogonality relation between channel pairs is satisfied within an orthogonality tolerance range. The server includes a cost report generating unit generating the cost report indicating that the cost of the ink consumption amount when a color copy is printed in color is less than the cost of the ink consumption amount when the color copy is printer in monochrome, and a transmitting unit transmitting the generated cost report to the user terminal. The first reaction unit has a plurality of reactors that communicate with each other, and the heating unit is provided between the adjacent reactors.