recording head


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recording head

[ri′kȯrd·iŋ ‚hed]
(electronics)
A magnetic head used only for recording. Also known as record head.
(engineering acoustics)
References in periodicals archive ?
The servo pattern is decoded in a drive by measuring the distance (a) between frame stripes at the servo read gap position while tape is transported longitudinally across the recording head.
They also offer Automatic Picture Control, which automatically monitors the condition of the recording head and videotape and sets the optimum recording head current.
To store a bit of data, a recording head magnetizes a tiny nickel rod with its north pole pointing up.
That way, recording head, like the ones in a tape recorder or VCR, could glide right over the tops ofthe nanowires.
The ideal perpendicular recording media will have an M-H loop with unity squareness (S) to avoid excess noise in the DC saturated state, a negative nucleation field in excess of the fields produced under the return pole of the recording head, a high anisotropy to provide thermal stability and a small average grain size and small intra-granular exchange to reduce transition jitter.
For example, a sharp ferromagnetic needle in place of a diamond tip could pick up the fine details of magnetic fields above a magnetized nickel film or near a magnetic recording head.
A separate motor is required to control each tape hub as well as one for spinning the recording head (three electric motors).
To pack the same amount of information onto a conventional magnetic disk would require a recording head that skins the disk's surface at a height equivalent to an aircraft flying at full speed just inches off the ground.
While linear recording moves the tape at very high speeds across a stationary recording head, helical drives utilize n slow moving tape and high-speed rotating drum containing the recording heads.
The recording head is made in steps, including etching, deposition, metalization, and planarization of layers on a silicon wafer, with silicon oxide as an insulator.

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