Patent ID: 7564650

Claim:
A head apparatus comprising: a head that records information into and reproduces the information from a disc; a slider that supports said head, and flies above a surface of the disc when the disc rotates, said slider having a medium opposing surface that opposes to the disc; a first positive pressure part that is formed on the medium opposing surface of said slider, generates a lifting power used to float said slider in cooperation with an airflow formed as the disc rotates, and defines a pitch angle of the slider; a second positive pressure part separate from said first positive pressure part and formed on the medium opposing surface of said slider, and configured to maintain a balance of said slider in a width direction perpendicular to a length direction from an inflow end to an outflow end of the airflow, a negative pressure part that is formed on the medium opposing surface of said slider, and decreases a flying height of said slider in cooperation with the airflow, a position of the negative pressure part which is closest to the first positive pressure part in the length direction being closer to the first positive pressure part than a position of the second positive pressure part which is closest to the first positive pressure part in the length direction, wherein (E/L)×100≧6 is met, where L is a length of the medium opposing surface along the length direction, and E is the shortest distance between said first positive pressure part and said negative pressure part along the length direction.