- Paper disc
The paper disc is one of the formats chosen to succeed the
DVD . Developed bySony and Toppan Printing, the disc can be read by Sony's newBlu-ray Disc (BD) format and offers up to 25 GB of storage. It was officially announced onApril 15 ,2004 [cite web|url= http://www.sony.net/SonyInfo/News/Press/200404/04-0415E/ |title= Press release |accessdate= 2008-04-15 |publisher=Sony .] .Paper discs are made of 51%
paper by weight [cite web|url= http://www.sony.net/SonyInfo/News/Press/200404/04-0415E/ |title= Press release |accessdate= 2008-04-15 |publisher=Sony ] .Basic structure of a paper disk is similar to the ordinary Blu-ray Disk. In a BD the recording layer on which the data is stored lies under a 0.1 millimeter protective layer and on top of a 1.1 millimeter thick substrate. The substrate, or basic surface on which a material adheres, is usually made of a polycarbonate plastic, but the new disc replaces this with paper. The result is a disc of which paper makes up approximately 51 percent of its weight, Sony says [cite web|url= http://www.sony.net/SonyInfo/News/Press/200404/04-0415E/ |title= Press release |accessdate= 2008-04-15 |publisher=
Sony ] .External links
* [http://www.sony.net/SonyInfo/News/Press/200404/04-0415E/ Press release]
* Cite journal
conference = Optical Data Storage 2004-04-18
location = Monterey, CA
date = 2004-09
title= A 25-GB paper disc based on the blu-ray structure
last = Yamasaki
first = Takeshi
coauthors = Toshiro Kinoshita, Masayuki Taniguchi, and Tomomi Yukumoto
editor=B. V. K. Vijaya Kumar and Hiromichi Kobori
pages = 21–27
volume=5380
journal = Proceedings of SPIRE
url = http://spiedl.aip.org/dbt/dbt.jsp?KEY=PSISDG&Volume=5380&Issue=1
doi= 10.1117/12.557516References
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