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The CD jewel case is designed to carry a booklet, as well as to have panel inserts. These may be used to display album artwork, lyrics, photos, thank-yous, messages, biography, etc. [5] Because the CD jewel case is the standard, most commonly used CD case, it is much cheaper. The price of the CD jewel case usually ranges from $0.75 to $0.95.
Brasso has also been used to polish out scratches in plastics: It has been used to polish CDs, DVDs, screens, and pools to repair scratches. It is a mild solvent and an extremely fine abrasive, so when applied to the reflective surface of the disc and rubbed radially (in straight lines between the edge and centre), it can smooth scratches and reduce their effect.
Disc rot is the tendency of CD, DVD, or other optical discs to become unreadable because of chemical deterioration. The causes include oxidation of the reflective layer, reactions with contaminants, ultra-violet light damage, and de-bonding of the adhesive used to adhere the layers of the disc together.
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.
Its use dates back to at least the Capacitance Electronic Disc in 1981, and they were also used in initial versions of the Blu-ray Disc. [1] As a cost-saving measure, newer versions use hard-coating technology to prevent scratches and do not need a caddy. Caddies may be an integral part of the medium, as in some DVD-RAM discs, or separately ...
Compact disc bronzing, or CD bronzing, is a specific, uncommon variant of disc rot, a type of corrosion that affects the reflective layer of compact discs and renders them unreadable over time. The phenomenon was first reported by John McKelvey in the September/October 1994 issue of American Record Guide .
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Standard black keep case. A keep case or poly-box is a type of packaging, most commonly used with DVDs and Blu-ray videos (and sometimes CDs).. Besides DVD-Video films, keep cases are very common with most disc-based video games since the PlayStation 2, and they are also found on many PC titles and MP3-CD audiobooks (all use discs that are the same basic dimensions as a DVD).
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