Abstract
The components used in fabricating Head-Disk Assemblies (HDA) used for high density data storage services must be as free of loose material as possible. Clean rooms are typically the environment in which the HDA’s are assembled. Materials entering the assembly area must satisfy a stringent requirement on the number of particles on the components. To satisfy these requirements, the components are cleaned in some kind of cleaning liquid prior to assembly. In order to prevent or at least minimize particle contamination, the cleaning liquids are routinely checked for particle content by using a procedure involving the Particle Recognition and Characterization (PRC) technique. When properly applied, PRC is a useful analytical tool in minimizing particle contamination in HDA’s.
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