Ad
related to: disc refurbishing machine for home
Search results
Results from the WOW.Com Content Network
Vinyl, acetate, and shellac discs being exposed to soil and fungus spores. Library of Congress Study, 1959. The conservation and restoration of vinyl discs refers to the preventive measures taken to defend against damage and slow degradation, and to maintain fidelity of singles, 12" singles, EP’s, and LP’s in 45 or 33⅓ rpm 10" disc ...
The direct metal mastering (DMM) process uses a copper-coated rather than lacquer-coated disc. Before lacquer discs, master recordings were cut into blank wax discs. Once complete, this master disc is used to produce matrices from which the record is pressed. For all intents and purposes, the finished record is a facsimile of this master disc. [1]
Also, the disc itself can be repaired. There are various machines that will repair discs by polishing, buffing or grinding the playable surface. Usually the disc will appear like new and most importantly the data can once again be read by the laser. Some game shops, pawnbrokers and supermarkets provide a disc repair service.
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.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Disc changers capable of holding up to 400 discs at once were available. Also, the user can manually choose the disc to be played, making it similar to a jukebox. They were often built into car audio and home stereo systems, although 7 disc CD changers were once made by NEC and Nakamichi [36] for PCs. Some could also play DVD and Blu-ray discs.
CD-R recording systems available in 1990 were similar to the washing machine-sized Meridian CD Publisher, based on the two-piece rack mount Yamaha PDS audio recorder costing $35,000, [citation needed] not including the required external ECC circuitry for data encoding, SCSI hard drive subsystem, and MS-DOS control computer.
Get user-friendly email with AOL Mail. Sign up now for world-class spam protection, easy inbox management, and an email experience tailored to you.
Ad
related to: disc refurbishing machine for home