This printer is equipped with: a first imaging device for imaging one side of an object； a first inspection unit for inspecting the one side of the object, on the basis of the image captured by the first imaging device； a first printing device for printing on the one side of the conveyed object, and positioned downstream from the first imaging device； a second imaging device for imaging the other side of the conveyed object； a second inspection unit for inspecting the other side of the object, on the basis of the image captured by the second imaging device； and a second printing device for printing on the other side of the conveyed object, and positioned downstream from the second imaging device.
