Recording head

Recording head

A recording head is the physical interface between a recording apparatus and a moving recording medium. Recording heads are generally classified according to the physical principle 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.

The two most common forms of recording head are:
* Magnetic - Magnetic recording heads use the principles of electromagnetism to coerce a paramagnetic recording medium, such as iron oxides, to orient in a readable manner. Record heads are constructed of laminated permalloy, ferrite, or sendust. As of 2006 this is by far the most dominant type of head in use.

* Optical - Optical recording heads use the principles of optics and light to impart energy on a recording medium, which accepts the energy in a readable manner, e.g. by melting or photography.

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.

ee also

*VTR
*Sound recording and reproduction
*Videotape
*Cassette
*Video head cleaner
*Cassette demagnetizer

External links

* [http://hyperphysics.phy-astr.gsu.edu/hbase/audio/tape.html Diagrams and explainations] of recording heads and the tape recording process.
* [http://www.manquen.net/audio/docs/Ampex%20ATR-100%20Record%20Construction.htm An Ampex recording head] , deconstructed.
* [http://www.skidmore.edu/academics/music/att/2TkHeadStack.html A tape recorder] , showing the head assemblies.
* [http://home.att.net/~uncamarvy/Wire/wc10.jpgPhoto] of an early recording head as part of a wire recorder.


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Look at other dictionaries:

  • recording head — noun also record head : a device used in the recording of sound for transforming electrical energy into a magnetic record or into a groove undulation on a disc * * * the part of a tape recorder that records a sound source by converting the… …   Useful english dictionary

  • recording head — rašymo galvutė statusas T sritis automatika atitikmenys: angl. record head; recording head; write head; writing head vok. Aufnahmekopf, m; Aufzeichnungskopf, m; Schreibkopf, m rus. головка записи, m; записывающая головка, m pranc. tête d écriture …   Automatikos terminų žodynas

  • recording head — įrašymo galvutė statusas T sritis fizika atitikmenys: angl. record head; recording head; writing head vok. Aufzeichungskopf, m; Registrierkopf, m; Schreibkopf, m rus. головка записи, f; самопишущая головка, f pranc. tête d’enregistrement, f …   Fizikos terminų žodynas

  • recording head — /rəˈkɔdɪŋ hɛd/ (say ruh kawding hed) noun 1. (in the manufacture of gramophone records) an electromagnetic device which cuts the original track in the master wax record from which the stampers are made. 2. an inductance coil in a tape recorder… …  

  • recording head — the part of a tape recorder that records a sound source by converting the electrical analog of the sound, as from a microphone, into a magnetic signal for storage on magnetic tape. Also, record head. [1930 35] * * * …   Universalium

  • Recording Head —   Refer instead to Head …   International financial encyclopaedia

  • Recording head — Записывающая головка, головка записи …   Краткий толковый словарь по полиграфии

  • mechanical recording head — mechaninio įrašymo galvutė statusas T sritis radioelektronika atitikmenys: angl. cutter head; mechanical recording head vok. Schneidkopf, m rus. резец для звукозаписи, m; рекордер, m pranc. graveur, m …   Radioelektronikos terminų žodynas

  • magnetic recording head — magnetinio įrašymo galvutė statusas T sritis automatika atitikmenys: angl. magnetic recording head vok. Aufzeichnungsmagnetkopf, m; Schreibmagnetkopf, m rus. головка записи, f; магнитная головка записи, f pranc. tête magnétique d enregistrement,… …   Automatikos terminų žodynas

  • optical recording head — optinio įrašymo galvutė statusas T sritis radioelektronika atitikmenys: angl. optical recording head vok. optischer Aufzeichnungskopf, m rus. оптическая записывающая головка, f pranc. tête d enregistrement optique, f …   Radioelektronikos terminų žodynas

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