Head-disc assembly
The head-disc assembly (English; head-disc assembly) is the encapsulated area of a disk drive that must be specially protected against dirt. This includes the following components.
- Plates with magnetizable layers
- Write heads and read heads with positioning arms
These components of the disk drive are assembled in clean rooms.
This creates a dust-free space between the panes, as even the smallest grain of dust would cause problems at the high speeds of a hard drive. Only a very small hole, which is closed with a filter substance, enables the necessary pressure equalization.
Individual evidence
- ^ Peter Bienert: Information and communication . Springer-Verlag, 1998, ISBN 3-540-64057-6 ( full text in the Google book search).