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Optical disc packaging
Optical disc packaging is the packaging that accompanies CDs, DVDs, and other formats of optical discs. Most packaging is rigid or semi-rigid and designed to protect the media from scratches and other types of exposure damage.
A jewel case is a compact disc case that has been used since the compact disc was first released in 1982. It is a three-piece plastic case, measuring 142 by 125 by 10 millimetres (5.59 in × 4.92 in × 0.39 in), a volume of 177.5 cubic centimetres (10.83 cu in), which usually contains a compact disc along with the liner notes and a back card. Two opposing transparent halves are hinged together to form the casing, the back half holding a media tray that grips the disc by its hole. All three parts are made of injection-moulded polystyrene.
Around 1993, there was a general shift to the tray being made of clear plastic instead of black or coloured.
The front lid contains two, four, or six tabs to keep any liner notes in place. The liner notes typically will be a 120 by 120 millimetres (4.7 in × 4.7 in) booklet, or a single 242 by 120 millimetres (9.5 in × 4.7 in) leaf folded in half. In addition, there is usually a back card, 150 by 118 millimetres (5.9 in × 4.6 in), underneath the media tray and visible through the clear back, often listing the track names, studio, copyright data and other information. The back card is folded into a flattened "U" shape, with the sides being visible along the ends (often referred to as the spine) of the case. The ends usually have the name of the release and the artist, and often label or catalogue information printed on them, and are designed to be visible when the case is stored vertically, 'book-style', on shelves.
The rear media tray snaps into the back cover and is responsible for securing the CD. This is achieved by a central circular hub of spring-loaded teeth that grip and effectively suspend the disc above the tray surface, preventing the recording surface from being scratched.
The jewel case is the standard case used by the majority of manufacturers and it is the most common type of case found in record and movie stores. Jewel cases are occasionally used for DVDs, but generally not for those that contain major film releases. Blank Blu-ray media is also most commonly sold in standard-width jewel cases.
According to Philips, the name "jewel case" reflects either the generally high quality of the case design compared to initial attempts, or its appearance. According to one publication, initial attempts at packaging CDs were unsatisfactory. When the new design, by Peter Doodson, was found to be "virtually perfect" it was dubbed the "jewel case". Another publication quotes Doodson describing that he "specified polished ribs as they pick up the light and shine" and states that the resulting appearance led to the name.
The CD jewel case has a tight and firm grip of the CD because of the tray's "teeth" or "lock". Because of this, even if the CD jewel case is turned upside-down, left, or right, the CD is held in place. Flimsier cases may cause the CD to become loose, or even fall out. Also, since the jewel case is made of plastic, it is sturdier compared to cardboard, paper, or foams. When pressure is applied to the CD jewel case, the case will break first before the CD. If the case is made of thin cardboard, there is a greater chance that the CD would break or get damaged because the weight is directed onto it.
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Optical disc packaging AI simulator
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Optical disc packaging
Optical disc packaging is the packaging that accompanies CDs, DVDs, and other formats of optical discs. Most packaging is rigid or semi-rigid and designed to protect the media from scratches and other types of exposure damage.
A jewel case is a compact disc case that has been used since the compact disc was first released in 1982. It is a three-piece plastic case, measuring 142 by 125 by 10 millimetres (5.59 in × 4.92 in × 0.39 in), a volume of 177.5 cubic centimetres (10.83 cu in), which usually contains a compact disc along with the liner notes and a back card. Two opposing transparent halves are hinged together to form the casing, the back half holding a media tray that grips the disc by its hole. All three parts are made of injection-moulded polystyrene.
Around 1993, there was a general shift to the tray being made of clear plastic instead of black or coloured.
The front lid contains two, four, or six tabs to keep any liner notes in place. The liner notes typically will be a 120 by 120 millimetres (4.7 in × 4.7 in) booklet, or a single 242 by 120 millimetres (9.5 in × 4.7 in) leaf folded in half. In addition, there is usually a back card, 150 by 118 millimetres (5.9 in × 4.6 in), underneath the media tray and visible through the clear back, often listing the track names, studio, copyright data and other information. The back card is folded into a flattened "U" shape, with the sides being visible along the ends (often referred to as the spine) of the case. The ends usually have the name of the release and the artist, and often label or catalogue information printed on them, and are designed to be visible when the case is stored vertically, 'book-style', on shelves.
The rear media tray snaps into the back cover and is responsible for securing the CD. This is achieved by a central circular hub of spring-loaded teeth that grip and effectively suspend the disc above the tray surface, preventing the recording surface from being scratched.
The jewel case is the standard case used by the majority of manufacturers and it is the most common type of case found in record and movie stores. Jewel cases are occasionally used for DVDs, but generally not for those that contain major film releases. Blank Blu-ray media is also most commonly sold in standard-width jewel cases.
According to Philips, the name "jewel case" reflects either the generally high quality of the case design compared to initial attempts, or its appearance. According to one publication, initial attempts at packaging CDs were unsatisfactory. When the new design, by Peter Doodson, was found to be "virtually perfect" it was dubbed the "jewel case". Another publication quotes Doodson describing that he "specified polished ribs as they pick up the light and shine" and states that the resulting appearance led to the name.
The CD jewel case has a tight and firm grip of the CD because of the tray's "teeth" or "lock". Because of this, even if the CD jewel case is turned upside-down, left, or right, the CD is held in place. Flimsier cases may cause the CD to become loose, or even fall out. Also, since the jewel case is made of plastic, it is sturdier compared to cardboard, paper, or foams. When pressure is applied to the CD jewel case, the case will break first before the CD. If the case is made of thin cardboard, there is a greater chance that the CD would break or get damaged because the weight is directed onto it.