Magnetic Disk Data Area Concave Buffer for Off-Track Vibration Control

The patent applies local quality by creating a buffer zone (concave part) at specific locations on the magnetic disk surface. This buffer zone is positioned at the outer edge of the data area where off-track vibrations are most likely to occur, providing localized protection without reducing the overall recording capacity significantly. The buffer zone acts as a protective barrier that absorbs the impact of vibrations while maintaining high recording density in the remaining data area.

The patent implements preliminary action by pre-defining the buffer zone during the data area configuration stage, before actual data recording begins. By anticipating the potential for off-track vibrations and pre-establishing protective buffer zones at vulnerable locations, the system prevents data interference before it can occur, rather than attempting to correct errors after they happen.

Instead of uniformly reducing the data area, the patent applies local quality by creating concentrated buffer zones only at the outer edge where off-track vibrations are most severe. This localized approach maintains high recording density in the majority of the data area while providing targeted protection where it is most needed, thus achieving reliability improvement without significant sacrifice of recording capacity.

The patent applies partial action by implementing buffer zones only in the critical outer region of the data area rather than throughout the entire data area. This partial protection strategy provides sufficient reliability improvement to prevent data interference from off-track vibrations while minimizing the impact on overall recording density, as the buffer zones occupy only a small portion of the total disk surface.

The patent addresses this contradiction by applying local quality through the creation of buffer zones specifically at the outer edge of the data area. This allows the data area to extend outward to maximize recording density while the buffer zone provides localized protection against off-track vibrations at the vulnerable outer boundary, thus achieving both high density and vibration resistance.

The patent implements preliminary anti-action by pre-positioning buffer zones at the outer edge of the data area before data recording begins. These buffer zones serve as a preliminary defensive measure that counteracts the harmful effect of off-track vibrations on the slider, allowing the data area to safely extend to the outer edge to maximize recording density without suffering from vibration-induced positioning errors.