| 摘要 |
PROBLEM TO BE SOLVED: To provide manufacture of a magnetic disk with less occurrence probability of T. A(thermal asperity) in a low floating zone. SOLUTION: In a mask material application process in the manufacture of the magnetic disk 1, a mechanism using a fluorine system resin particle as a mask particle, and using pure water and a very small amount of surfactant as the dispersed liquid of the fluorine system resin particle when this fluorine system particle group is blown out into space, and vaporizing a solid particle and selecting the solid particle with a large particle size is provided, and only the solid particles with the uniform particle size of a mean particle size of 1μm or below are stuck onto the magnetic disk as mask material, and by etching this mask material, uniform and minute projection parts are formed on the magnetic disk 1.
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