Title:
OPTICAL RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2008/029856
Kind Code:
A1
Abstract:
Provided is an optical recording medium having an excellent jitter characteristic and
preferable recording/reproduction characteristic and capable of performing significantly
high-density recording. An optical recording medium (20) includes: a substrate
(21) on which a guide groove is formed, a layer (23) having a light reflection function,
a recording layer (22) containing a predetermined porphyrin compound as a main
content, and a cover layer (24) capable of transmitting a recording/reproduction light
coming into the recording layer (22) which are layered in this order on the substrate
(21). When the guide groove portion farther from the plane where the recording/reproduction
light beam comes into the cover layer (24) serves as the recording groove portion,
the reflected light intensity at the recording pit portion formed in the recording
groove portion is higher than the reflected light intensity when no recording
is performed at the recording groove portion.
Inventors:
KUBO, Masae (31-19, Shiba 5-chome, Minato-k, Tokyo 14, 1080014, JP)
久保 正枝 (〒14 東京都港区芝５丁目３１番１９号 三菱化学メディア株式会社内 Tokyo, 1080014, JP)
KIYONO, Kenjirou (31-19, Shiba 5-chome, Minato-k, Tokyo 14, 1080014, JP)
久保 正枝 (〒14 東京都港区芝５丁目３１番１９号 三菱化学メディア株式会社内 Tokyo, 1080014, JP)
KIYONO, Kenjirou (31-19, Shiba 5-chome, Minato-k, Tokyo 14, 1080014, JP)
Application Number:
JP2007/067336
Publication Date:
March 13, 2008
Filing Date:
September 05, 2007
Export Citation:
Assignee:
Mitsubishi Kagaku Media Co., Ltd. (31-19, Shiba 5-chome Minato-k, Tokyo 14, 1080014, JP)
三菱化学メディア株式会社 (〒14 東京都港区芝５丁目３１番１９号 Tokyo, 1080014, JP)
KUBO, Masae (31-19, Shiba 5-chome, Minato-k, Tokyo 14, 1080014, JP)
久保 正枝 (〒14 東京都港区芝５丁目３１番１９号 三菱化学メディア株式会社内 Tokyo, 1080014, JP)
三菱化学メディア株式会社 (〒14 東京都港区芝５丁目３１番１９号 Tokyo, 1080014, JP)
KUBO, Masae (31-19, Shiba 5-chome, Minato-k, Tokyo 14, 1080014, JP)
久保 正枝 (〒14 東京都港区芝５丁目３１番１９号 三菱化学メディア株式会社内 Tokyo, 1080014, JP)
International Classes:
B41M5/26; G11B7/24; G11B7/244; G11B7/254; G11B7/257
Attorney, Agent or Firm:
NAITO, Teruo (Shin-ei Patent Office, 7-13 Nishi-Shimbashi,1-chome, Minato-ku, Tokyo 03, 1050003, JP)
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