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| February 19, 2008 |
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World First!
Recordable Blu-ray Discs Using Organic Dye in Recording Layer,
Recordable BD-R LTH TYPE to Go on Sale |
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| Mitsubishi Kagaku Media Co., Ltd. |
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On February 26, Mitsubishi Kagaku Media Co., Ltd. (Head Office: Minato-ku, Tokyo; President: Shigenori Otsuka) will release the 5-pack 2X BD-R LTH Type 25GB Recordable Blu-ray Disc (BD), which utilizes organic dye in the recording layer.
Mitsubishi Kagaku Media has continued its efforts at creating a standard for the organic dye BD-R, and last spring the Low to High (LTH) *1 recording system compatible with the organic dye BD-R was adopted into the Blu-ray Disc Recordable Format Ver.1.2*2. This has been designated as being LTH TYPE, since the use of organic dyes in the recording film of the BD-R causes the reflectance of the disc after recording to change from a low to high reflectance.
The AZO dye, which was developed internally for the recording of blue-violet lasers and is used as the organic dye for our recording layer, has shown a great deal of reliability in its use for CD-R and DVD-/+R, and has been further optimized for use with the BD. CD-R and DVD-/+R discs, which make up the majority of the recordable optical disc market*3, use organic dyes in their recording layers. The reliability and stability of organic dye recording films can be seen in the massive market share that has been obtained for CD-R and DVD-/+R, and in the way in which CD-R sales have performed over the last 10 years since their release.
Since last autumn, domestic sales of BD Recorders have increased dramatically. A spin coating method is used for the production of the organic dye recording layer, and this utilizes the same production equipment as that used to produce CD-R and DVD-/+R. There is already plenty of equipment available that is capable of producing CD-R and DVD-/+R, which means that BD has the advantage of being able to respond to rapid increases in demand. Mitsubishi Kagaku Media will promote bigger growth of the recordable BDs in the marketplace.
The Mitsubishi Kagaku Media/Verbatim Group aims to become a recording media company that continues to create new values demanded by the time.
*1: See Terminology below.
*2: Adopted from April 2007.
*3: According to the Japan Recording-Media Industries Association, in 2007, 5.5 billion recordable DVDs were sold compared to 460 million re-writable DVD, and 7 billion CD-R were sold in comparison to 200 million CD-RW.
<Items on sale>
• The manufacturer's recommended retail prices are all left as open prices.
| Product name |
Recording speed |
Recording time (terrestrial digital/BS digital) * |
Model no. |
Disc contained |
Specifications |
Label |
On-sale date |
BD-R
LTH TYPE
for Video
(Recordable) ** |
1-2X speed |
180 min/130 min * |
VLR130N5 |
5 pcs |
10? case |
Standard |
February?26 |
*Recording time depends on recording equipments and recording mode.
**This product is compliant with Blu-ray Disc Recordable Format (BD-R) Version 1.2.
[Terminology: Low to High (LTH)]
A laser beam causes the chemical and physical changes in the nature of the recording layer where it hits when recording data onto the BD-R. The data can be read utilizing the difference in optical reflectance between those sections that are changed and those that aren't. For the BD-R LTH TYPE, contrary to those currently on the market, reflectance before recording is low, and the reflectance of the recorded portion becomes higher.
[Features of the Mitsubishi Kagaku Media Recordable 2x BD-R LTH TYPE]
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Use of the highly reliable AZO organic dye in its recording film. |
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Cover layer created by spin coating method, which ensures a uniform thickness and a flat and smooth surface. |
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A hard coat that protects the recording surface and prevents damage from dust, scratches, or fingerprints. |
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Mastering (creating a master) technology, which creates a track pitch 57% narrower than that of a DVD. |
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Injection molding technology, which creates an accurate copy of the stamper (master). |
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High level of quality control to achieve stable recording and playback |
| For further information, please contact |
Yukana Yamashita
Mitsubishi Kagaku Media Co., Ltd. |
Tel: [+81] 3-5484-3972
Fax: [+81] 3-5484-8224
URL: http://www.mcmedia.co.jp
Check our website for product details. |
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Public Relations and Investor Relations Department
Mitsubishi Chemical Corporation |
| Tel: [+81] 3-6414-3730 |
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| Consumer contact |
Customer Service
Mitsubishi Kagaku Media Co., Ltd. |
| Toll free Tel: 0120-34-4160 (Japan only) |
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