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Mini-Cassette

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Mini-Cassette
Microcassette (L) and Mini-Cassette (R)
Media typeMagnetic cassette tape
Encodinganalog signal and later digital
Capacity30 minutes
Read mechanismtape head
Write mechanismmagnetic recording head
Developed byPhilips
Usagedictation

The Mini-Cassette, often written minicassette, is a magnetic tape audio cassette format introduced by Philips in 1967.

It is used primarily in dictation machines and was also employed as a data storage for the Philips P2000 home computer. As of August 2021, Phillips still produces mini-cassette players along with new mini-cassette tapes.[1][2][3]

Design

Unlike the Compact Cassette, also designed by Philips, and the later Microcassette, introduced by Olympus, the Mini-Cassette does not use a capstan drive system; instead, the tape is propelled past the tape head by the reels.[4] This is mechanically simple and allows the cassette to be made smaller and easier to use, but produces a system unsuited to any task other than voice recording, as the tape speed is not constant (averaging 2.4 cm/s) and prone to wow and flutter.

However, the lack of a capstan and a pinch roller drive means that the tape is well-suited to being repeatedly shuttled forward and backward short distances as compared to microcassettes, leading to the Mini-Cassette's use in the first generations of telephone answering machines, and continuing use in the niche markets of dictation and transcription, where fidelity is not critical, but robustness of storage is, and where analog media remained in use long after digital media had been introduced.[5]

A Sony Mini-Cassette dictation recorder

In 1980, Philips released several recorder models (MDCR220, LDB4401, LDB4051, etc.) that encoded and read digital audio on standard mini-cassettes.[6][7] A computer model (the Philips P2000) also used the mini-cassette as a digital medium and provided automatic management of the drive, including search, space and directory management, fast-forward and rewind.

Similar products

Philips later introduced a smaller version of the cassette called an Ultra Mini-Cassette that had a max record time of 10 minutes on each side of the tape.[8]

A very similar (but incompatible) cassette format was produced by Hewlett-Packard and Verbatim (the HP82176A Mini Data Cassette) for data storage in their HP82161A tape drive, which, like other minicassettes, did not use a capstan.

See also

References

  1. ^ "Desktop transcription system LFH0720T | Philips".
  2. ^ "PocketMemo mini cassette LFH0005 | Philips".
  3. ^ Archived at Ghostarchive and the Wayback Machine: "Philips Mini Cassette transcriber, still available new in 2021!". YouTube.
  4. ^ Microcassette Minicassette
  5. ^ "Archived copy". Archived from the original on 2010-05-09. Retrieved 2007-02-24.((cite web)): CS1 maint: archived copy as title (link)
  6. ^ http://www.nascomhomepage.com/pdf/mdcr.pdf [bare URL PDF]
  7. ^ http://www.wda-fr.org/forum/download/file.php?id=2975
  8. ^ Archived at Ghostarchive and the Wayback Machine: "The Picocassette - Smallest Analogue Cassette Tape ever made". YouTube.
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Mini-Cassette
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