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QIC DC6250 Tape

Quarter inch cartridge tape (abbreviated QIC, commonly pronounced "quick") is a magnetic tape data storage format introduced by 3M in 1972, with derivatives still in use as of 2009. 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. The tape was originally 1⁄4-inch (6.35 mm) wide and anywhere from 300 to 1,500 feet (91 to 460 m) long.

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£32.00

QIC DC6525 Tape

Data is written to tape in linear tracks in what is called "serpentine" mode, where the tracks alternate direction by use of a head switch or step. Since the introduction of the format, QIC has been widely used and many variations exist. There is a QIC trade association that publishes QIC standards which include interfaces and logical formats, to a very large extent it was the efficiency and openness of this organisation which encouraged hardware and software developers to use this type of drive and media.

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QIC DC9120 Tape

The QIC cartridge is distinguished from other types of tape cartridges by the fact that it contains an endless drive belt which is moved at a uniform speed by a motorised capstan. Since the belt is in contact with the tape, this ensures both that the tape moves at uniform speed, and that neutral tension is maintained at all times. This is in contrast to cassette tapes or DATs where the tape is moved past the head by a capstan and pinch wheel, but the takeup reel is driven by a servo motor or slipping clutch.

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QIC DC9135 Tape

The tape in a QIC cartridge is not physically attached to the reels and is never completely unwound. This is again different from other cassettes or cartridges, which generally have some form of clip anchoring on at least one end of the tape. To ensure that the tape is never completely unwound, each end has a small beginning or end of tape hole which is detected by an optical sensor, and an "early warning" hole further from each end. If a defective drive—for example with fluff in a sensor—winds the tape past the BOT or EOT marker, the tape w

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£42.00

QIC DC9200 Tape

The first QIC tape format was the 5.875 in by 3.875 in (150 x 99mm) Data Cartridge (DC) format with two internal belt-driven reels and a metal base. The original product, the DC300, had 300 feet of tape and held 200 kilobytes. Various QIC DC recording formats have appeared over the years

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QIC DC9250 Tape

The design of the QIC tape cartridge is very robust: the aluminium baseplate is an eighth of an inch thick, and the robust plastic cover can withstand abuse and impacts that would damage other tape formats. However, because the tape is belt-driven, seeking back and forth can eventually cause the tape to become unevenly tensioned. It is therefore necessary to periodically retension the cartridge. This is accomplished by winding the tape from beginning to end and back in one operation, allowing the belt to equalize itself. For newer QIC drive

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£55.00

QIC-tapes Product List

QIC DC6250 Tape

QIC DC6525 Tape

QIC DC9120 Tape

QIC DC9135 Tape

QIC DC9200 Tape

QIC DC9250 Tape

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