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Travan is an 8 mm magnetic tape cartridge design developed by the 3M company, used for the storage of data in computer backups and mass storage. [1] Over time, subsequent versions of Travan cartridges and drives have been developed that provide greater data capacity, while retaining the standard 8 mm width and 750' length.
In addition to the standard packet format, the driver gives the user direct control over the tape drive motors and reading and writing the tones. This is used with audio tapes to control playback. A typical scenario has an audio recording on the "left" track and short bursts of 5327 Hz at key locations within the audio.
Bias level for each type was set equal to the optimal bias of the relevant IEC reference tape, and sometimes changed when the IEC changed the reference tapes, though the BASF datasheet for the Y348M tape, approved as the IEC Type I reference in 1994, says that its optimal bias is exactly 0.0 dB from the previous reference (BASF R723DG).
At the end of the tape, the drive reversed the direction of tape motion, moved the read and write heads slightly vertically across the tape, and continued to write (or read) more data until the beginning of the tape was reached. This process could be repeated many times, laying down several track sets on the tape media in a serpentine recording ...
[8] [9] The name was soon applied to the entire line of 3M tapes. Scotty McTape, a kilt-wearing cartoon boy, was the brand's mascot for two decades, first appearing in 1944. [10] The familiar tartan design, a take on the well-known Wallace tartan, was introduced in 1945. [10] The Scotch brand, Scotch Tape and Magic Tape are registered ...
In the late 1990s, 3M's tape division had an annual turnover of $300 million and was the US industry leader. [32] In 2004, 3M released a semi-transparent duct tape, with a clear polyethylene film and white fiberglass mesh. [33]
Internals of Ampex Fine Line F-44, a 3-head Ampex home-use audio tape recorder, c. 1965 AMPEX model 300 half-inch three-track recorder AMPEX 440 (2tr, 4tr) & 16-track MM 1000. The company's first tape recorder, the Ampex Model 200A, was first shipped in April 1948. The first two units, serial numbers 1 and 2, were used to record Bing Crosby's ...
U-Matic S tapes had a maximum recording time of 20 minutes, and large ones 1-hour, although some tape manufacturers such as 3M came out with 30-minute S-tapes and 75-minute large cassettes (and DuPont even managed 90-minute tapes) [13] by using a thinner tape.