Search results
Results from the WOW.Com Content Network
During glass mastering, glass is used as a substrate to hold the CD master image while it is created and processed; hence the name. Glass substrates, noticeably larger than a CD, are round plates of glass approximately 240 mm in diameter and 6 mm thick. [3] They often also have a small, steel hub on one side to facilitate handling. The ...
The cases used for CD singles sold in Japan and Europe are 7 mm thick, with a "J-card" type inlay, showing cover art through the front of the case, and also through both the spine and part of the back of the case. The CD itself is usually inserted upside down in the case so that the artwork on the disc itself shows through the transparent back ...
Longbox packaging was phased out officially as of April 1, 1993, due to the controversy. At the same time, major retail stores were no longer selling vinyl records and had converted their displays to accommodate shrink-wrapped jewel cases, meeting the rising consumer demand for CDs while eliminating the need for longboxes. A further inducement ...
Photo CDs are defined in the Beige Book and conform to the CD-ROM XA and CD-i Bridge specifications as well. They are intended to play on CD-i players, Photo CD players, and any computer with suitable software (irrespective of operating system). The images can also be printed out on photographic paper with a special Kodak machine.
An optical disc is designed to support one of three recording types: read-only (such as CD and CD-ROM), recordable (write-once, like CD-R), or re-recordable (rewritable, like CD-RW). Write-once optical discs commonly have an organic dye (may also be a ( phthalocyanine ) azo dye , mainly used by Verbatim , or an oxonol dye, used by Fujifilm [ 4 ...
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.
For premium support please call: 800-290-4726 more ways to reach us
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.