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In 1978 the International Electrotechnical Commission (IEC) enacted the comprehensive standard on cassette tapes (IEC 60094). One year later the IEC mandated the use of notches for automatic tape type recognition. [21] Since then, the four cassette tape types were known as IEC I, IEC II, IEC III and IEC IV. [21]
The Compact Cassette, also commonly called a cassette tape, [2] audio cassette, or simply tape or cassette, is an analog magnetic tape recording format for audio recording and playback. Invented by Lou Ottens and his team at the Dutch company Philips , the Compact Cassette was released in August 1963.
In 1952 and 1957, they began to produce magnetic tape, with compact cassette tapes following in 1966. TDK manufactured an extensive portfolio of magnetic and optical media, including several formats of videotape and blank CD-R and recordable DVD discs until the recording media business was sold to Imation in 2007.
Nakamichi also sold its own brand of blank cassette tapes. Around 1978, when metal bias (IEC TYPE IV) cassettes came into the market, Nakamichi produced some early metal tape capable decks such as the 580M. [3] The tape settings on these decks were EX (normal bias), SX (high bias), and ZX (metal bias).
Prior to the introduction of the Disk II, cassette was the main storage medium for Apple machines. Here an Apple II is using a Panasonic tape deck. The Apple I introduced an expansion-card based cassette system similar to KCS, recording a single cycle of 2000 Hz for a space and a single cycle of 1000 Hz for a mark. This resulted in an average ...
Maxell was formed in 1960, when a dry cell manufacturing plant was created at the company's headquarters in Ibaraki, Osaka.In 1961, Maxell Electric Industrial Company, Limited was created out of the dry battery and magnetic tape divisions of Nitto Electric Industrial Company, Limited (now Nitto Denko Corporation).
The thickest tape normally used in cassettes is about 16-18 μm in thickness, and is used in C60 cassettes and in shorter lengths such as the C46. As the standard tape speed for a compact cassette is 1 + 7 ⁄ 8 ips (4.75 cm/s) and a C60 cassette records 30 minutes per side, a C60 cassette in theory holds 281 + 1 ⁄ 4 ft (85.73 m) of tape.
Ampex-branded u-matic cassette tapes are also now exhibiting sticky-shed problems, similar to their reel tape media. [citation needed] As of the 2020s, digitizing companies have documented examples of sticky-shed from Maxell. TDK has been showing signs as of late of shedding its lubricant in the form of a white powder or white/yellowish goo.
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