8mm tape

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8mm tape

An 8mm-wide magnetic tape technology that is used in analog and digital camcorders (see Hi8) and in data applications. Exabyte Corporation enhanced the international 8mm format established in 1984 and turned it into a high-performance digital storage device in 1987. The cartridges held 2.5GB, a breakthrough for the time.

The Mammoth Brand
In 1996, Exabyte introduced the Mammoth drive, a capstan-less version of its 8mm line, which initially supported AME-based 20GB cartridges and earlier MP-based cartridges. The lack of capstan reduces wear on the tape, because the capstan has to press against the medium to move it. Mammoth-2 later increased capacity to 60GB. Tape libraries hold from 500GB to more than 1TB.

Imation Became the Sales Outlet
Exabyte, which used to sell its products direct and through OEMs, signed an exclusive, worldwide distribution agreement with Imation Corporation in late 2003. The alliance included an equity investment in Exabyte. See magnetic tape and helical scan.


Mammoth Cartridge
The storage capacities may be "mammoth," but the cartridges are smaller than a deck of playing cards.







Helical Scan Formats
These are the helical scan tape formats used for computer storage. See helical scan.


Helical Scan Formats
These are the helical scan tape formats used for computer storage. See helical scan.
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References in periodicals archive ?
The total motion of the 2 mm and 4 mm inferiorly shifted 3 8 mm device is 13% and 21% greater than when positioned in the center of the glenoid.
Measurement of intracellular calcium level To measure intracellular [Ca.sup.2+] levels, we cut the thoracic aorta without endothelium into spiral strips approximately 8 mm in length and 1 mm in width under a dissecting microscope.
Available sizes are 1.5 mm ID x 3 mm OD, 2.5 mm ID x 4 mm OD, 3 mm ID x 5 mm OD, 4 mm ID x 6 mm OD, 5 mm ID x 8 mm OD, and 6.5 mm ID x 10 mm OD.
Once the 2 mm thick samples were plied to 8 mm thick (the standard thickness required for the IRHD dead load tester) the results came within the specified tolerances of the test pieces.
In contrast, the standard dead load blocks of 8 mm thick, when tested on the micro IRHD and the type M durometer instruments, tended to give approximately the same results as the dead load IRHD and type A durometer instruments.
To summarize, it can be stated that problems can arise due to insufficient tolerances with thickness from 8 mm and up using the conventional design to produce thicker sheets for NR conveyor belt covers.
* The calender does more work yielding better tolerances with sheet thicknesses [is greater than] 8 mm;
At 8 mm compression, the static stiffness is given as 0.262 kN/mm.