Presentation 2003/2/21
Phase Change Recording Media of 20GB Capacity (AOD) For System with 0.6mm-thick Substrate : Media Technology for Obtaining Larger Data Density
Sumio Ashida, Keiichiro Yusu, Takayuki Tsukamoto, Katsutaro Ichihara, Noritake Ohmachi, Akihito Ogawa, Naoki Morishita, Naomasa Nakamura,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) We have developed phase change media of 20GB user data capacity for the next generation optical recording system using a blue-violet laser diode with the wavelength of 405 nm. An objective lens with the numerical aperture of 0.65 has been used along with 0.6 mm-thick substrates on which the laser is incident. We have employed the land and groove recording. A transparent film with high thermal conductivity has been adopted at the light incident side of the recording layer in order to improve the carrier to noise ratio and the erase ratio as well as to reduce the cross-erase. Bottom channel bit error rate of less than 1×10^<-6> has been obtained and its wide tilt margins have successfully demonstrated the strong feasibility for the next generation rewritable system.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) phase change optical recording / high capacity disc / transparent thermal control layer
Paper # CPM2002-167
Date of Issue

Conference Information
Committee CPM
Conference Date 2003/2/21(1days)
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Paper Information
Registration To Component Parts and Materials (CPM)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Phase Change Recording Media of 20GB Capacity (AOD) For System with 0.6mm-thick Substrate : Media Technology for Obtaining Larger Data Density
Sub Title (in English)
Keyword(1) phase change optical recording
Keyword(2) high capacity disc
Keyword(3) transparent thermal control layer
1st Author's Name Sumio Ashida
1st Author's Affiliation Storage Materials and Devices Lab.Research and Development Center,Toshiba Corp.()
2nd Author's Name Keiichiro Yusu
2nd Author's Affiliation Storage Materials and Devices Lab.Research and Development Center,Toshiba Corp.
3rd Author's Name Takayuki Tsukamoto
3rd Author's Affiliation Storage Materials and Devices Lab.Research and Development Center,Toshiba Corp.
4th Author's Name Katsutaro Ichihara
4th Author's Affiliation Storage Materials and Devices Lab.Research and Development Center,Toshiba Corp.
5th Author's Name Noritake Ohmachi
5th Author's Affiliation Core Technology Center,Digital Media Network Company,Toshiba Corp.
6th Author's Name Akihito Ogawa
6th Author's Affiliation Core Technology Center,Digital Media Network Company,Toshiba Corp.
7th Author's Name Naoki Morishita
7th Author's Affiliation Core Technology Center,Digital Media Network Company,Toshiba Corp.
8th Author's Name Naomasa Nakamura
8th Author's Affiliation Core Technology Center,Digital Media Network Company,Toshiba Corp.
Date 2003/2/21
Paper # CPM2002-167
Volume (vol) vol.102
Number (no) 664
Page pp.pp.-
#Pages 5
Date of Issue