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The preservation of optical media is essential because it is a resource in libraries, and stores audio, video, and computer data. While optical discs are generally more reliable and durable than older media types, (magnetic tape, LPs and other records) environmental conditions and/or poor handling can result in lost information.
For a machine that cost $500, this was a relatively novel idea. [3] Regina shipped 100,000 music boxes between 1892 and 1921, with sales topping out over $2 million a year. The company had 325 employees, and even as Symphonion established an American branch, Regina thrived as the market leader.
The Sony MZ1, the first MiniDisc player, released in 1992. MiniDisc (MD) is an erasable magneto-optical disc-based data storage format offering a capacity of 60, 74, and later, 80 minutes of digitized audio. Sony announced the MiniDisc in September 1992 and released it in November [2] of that year for sale in Japan and in December in Europe ...
LightScribe is an optical disc recording technology that was created by the Hewlett-Packard Company. It uses specially coated recordable CD and DVD media to produce laser -etched labels with text or graphics, as opposed to stick-on labels and printable discs. Although HP is no longer developing the technology, it is still maintained and ...
Disc sander: A disc sander is most commonly implemented as a stationary machine that consists of a replaceable circular shaped sandpaper attached to a wheel turned by an electric motor or compressed air. The usually wooden work piece, (although other materials can be shaped and worked on such as plastics, metals and other soft materials), is ...
Presto 8N Disc Cutting Lathe (1950) used by the Canadian Broadcasting Corporation to record radio programs. A disc cutting lathe is a device used to transfer an audio signal to the modulated spiral groove of a blank master disc for the production of phonograph records. Disc cutting lathes were also used to produce broadcast transcription discs ...
An MFP (multi-function product / printer / peripheral), multi-functional, all-in-one (AIO), or multi-function device (MFD), is an office machine which incorporates the functionality of multiple devices in one, so as to have a smaller footprint in a home or small business setting (the SOHO market segment), or to provide centralized document ...
The space between discs is at intervals of 0.4 to 0.75 mm, the exact space is determined by the liquid to be processed and its compatibility to the solids to be separated from the liquid. [10] For medium rate filtering, discs-type centrifuges are used. [11] For slow filtering slurries, sedimenting centrifuges are used. [11] Nozzles