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Recording HeadA recording head is the physical interface between a recording apparatus and a moving recording medium. Recording heads are generally classified according to the physical priniciple that allows them to impress their data upon their medium. A recording head is often mechanically paired with a playback head, which, though proximal to, is often discrete from the record head. As of 2004, the two most common forms of recording head are: Note that Magneto-optical recording, though using optics and heat, should properly be considered a magnetic process, since the data stored on magneto-optical media is stored magnetically. Earlier systems, such as phonograph records, used mechanical heads known as styli to physically cut grooves in the recording medium, in a configuration (of size, width, depth and position) recoverable as sound.
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