Variant Details





Main Image: Top / Obverse
P1010218c.JPG
Additional Image: Bottom / Reverse
P1010219c.JPG
Product Name Computer Cassette C-20 Variant ID V0000417
Name of Holotype Compact Cassette format analogue audio tape, cassette Holotype ID H000023
Product Code/Number
Manufacturer Micron
Genre(s) Sound Data
Carrier Type tape cassette
Process Type magnetic
Medium Type 1/8" cassette
Standards IBTN/EBU: CCA
Market Professional
Height 100 mm
Width 63 mm
Diameter
Depth 12 mm
Running Length
Marketed Capacity 90 Kb/side @ 1200 baud or 22.5 Kb/side @ 300 baud
Materials plastic casing with various oxide coatings upon various tape substrates
Distinguishing Features mostly double sided use with sides designated A or B
Status
Collection of: National Library of Australia
Created by National Library of Australia
Assessment Summary User can access and review media using a current standard environment. (minimal effort)
Remarks -.-
Production Started 1963
Production Stopped 1996
Application Binder Domestic Tape
Binder Stability
Dye/Emulsion/Oxide g-Fe2O3 acicular
Base material Polyester
Back Treated 4 / black

Back Treated: (μm) or (μ")

Base Thickness: 20 (µm) or (µ")

Dye/Emulsion/Oxide Thickness: 11 (μm) or (μ")

Total Thickness: 35 (µm) or (µ")

Coercity: 320 (Oe) or 25 (kA/m)

Retentivity: 1650 (Gauss) or 165 (mT)

Remanence: (nWb/m) or 1800 (SatFlux)
PDF Web Link
Image 3 Macro
NoPhoto.jpg
Image 4 Macro
Required Devices Compact Cassette player
Required Interface Connectors - RCA, mini phone,
Required Operating System NA
Required Applications NA
Formated Capacity
Required Drivers NA
Formating Type
Required Accessories
Required Form Factor various
Compression/Codec
Requirement Specifications The original magnetic material was based on gamma ferric oxide (Fe2O3), later variations included:chromium dioxide (CrO2); magnetite (Fe3O4); Cobalt-adsorbed iron oxide;
Transfer Rate 1 7/8 ips
Recording Format
Number Of Cylinders
Process/Technique
ISO
Colour Space
Resolution
Process
Block Error Rate
Push Pull Signal
Crosstalk
Reflectivity
Sensitivity
Lightfastness
Read Stability
Life: Manufacturer 100
Life: Community 50
Web Ref: Materials
Substrate Stability
Image Stability
Re-Formatting Issues
Web Ref: Re-Formatting
Web Ref: Conservation
Web Ref: Environment http://en.wikipedia.org/wiki/Compact_cassette#Data_recording
Date Created 19/02/2009
Last Modified by Douglas Elford-NLA
Date Modified 29/06/2009
 
   

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