Disclosed is a gas barrier film having, on one surface of a substrate film, a gas-barrier layer comprising at least one organic region and at least one inorganic region, and having, as a barrier property-having layer, only a layer comprising a barrier property-having resin as the main ingredient of the layer on the other surface of the substrate film. The piezoelectric material contains as a main component a composite oxide and is expressed by the general formula Pb1x1x2, A1x1, A2x2 ), O3, where yz1, 1. The corner transfer device has two height-adjustable conveying devices disposed at right angles with respect to one another.