An image data processing device allowing both of user side and provider side to obtain benefits, leading to market expansion, is disclosed. The de-oiled, powdered lecithin is water miscible and is blended with relatively high percentages of water and vegetable oil to form an oil in water stable emulsion that exhibits superior pan release properties. A head slider is loaded on a first surface of the suspension at a position on the side of the extending end with respect to the head IC chip mounting portion, the head slider integrally including a head.