An imaging device includes: an imaging unit that captures page images; an operation unit configured to receives a command from outside to select a left page imaging mode in which left page images among the page images are sequentially captured in accordance with page turning, and a command from outside to select a right page imaging mode in which right page images among the page images are sequentially captured in accordance with page turning; a control unit that causes the imaging unit to perform imaging of the page images that correspond to the imaging mode selected via the operation unit; and an output unit that outputs the page images captured by the imaging unit.