Fast take-off negative pressure slider

Using computer simulation, the flying characteristics of a conventional positive pressure head slider and two types of zero-load negative pressure head sliders are compared. One of the negative pressure head sliders is aimed at high stiffness (HS type), and the other is at CSS durability by virtue of its fast taKe-off design (FTO type). The reverse step of the FTO is deeper than that of the HS type. On the FTO type, suction increases gradually as the disk speed increases, and the slider takes off at a lower velocity than the HS type. So the suction of the FTO type is still low when the slider takes off from the disk. By experiment, we confirmed that the FTO prototype head impacts little on the medium during CSS, and also has superb flying stability.