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The IEC reference tape bias definition is: Using the relevant IEC reference tape and heads according to Ref. 1.1, the bias current providing the minimum third harmonic distortion ratio for a 1 kHz signal recorded at the reference level is the reference bias setting.
Quarter inch cartridge tape (abbreviated QIC, commonly pronounced "quick") is a magnetic tape data storage format introduced by 3M in 1972, [1] with derivatives still in use as of 2016. QIC comes in a rugged enclosed package of aluminum and plastic that holds two tape reels driven by a single belt in direct contact with the tape.
Tapes manufactured before 1986 use scotch recording tape inside. Tapes sold by Muzak use a different formulation of tape more similar to type 1 cassette tape. Muzak tapes use 3M shells with Muzak labels over the top of the 3M labeling. The last tapes were sold in 1988. All information on the Cantata 700 was divested by 3M in 1988. [3]
The first commonly available increase in tape length resulted from a reduction in backing thickness from 1.5 to 1.0 mil (38 to 25 μm) resulting in a total thickness reduction from 42 to 35 μm (1.7 to 1.4 mils), which allowed 3,600 ft (1,100 m), 1,800 ft (550 m), and 900 ft (270 m) tapes to fit on ten-and-a-half-, seven-, and five-inch reels respectively.
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.
Magic Tape, also known as Magic Transparent Tape, is a brand within the Scotch Tape family of adhesive tapes made by 3M, sold in distinctive plaid packaging. Invented and introduced in 1961, it is the original matte finish tape. It appears frosty on the roll yet is invisible on paper. This quality makes it popular for gift-wrapping. [13]
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