Method of generating micro-topography on a surface
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United States of America Patent
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Nov 29, 1994
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N/A
app pub date -
Sep 9, 1993
filing date -
Sep 9, 1992
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Abstract
A method of generating micro-topography on a surface comprises the steps of using an analog signal to record a magnetic latent image corresponding to the micro-topography to be formed on the surface of a magnetic medium, applying to the magnetic medium a DC magnetic field weaker than its coercive force, supplying a magnetic fluid to the surface of the magnetic medium and allowing super-fine magnetic particles in the magnetic fluid to be attracted to and deposited on the magnetic medium in accordance with the intensity distribution of the leakage magnetic field from the magnetic latent image, and fixing the super-fine magnetic particles.
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