Optical card and process for producing it

Optical card and process for producing it

An optical card comprises a transparent substrate having a track groove on its surface, an optical recording layer provided on said track groove, and an opaque card substrate provided in such a manner that it may be contiguous to said optical recording layer, wherein an unrecordable part (25) is pro...

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Hauptverfasser: KAWADE, HISAAKI, YOSHINO, HITOSHI, NAGANO, KAZUMI, MIURA, KYO, IKOMA, KEIKO, MIYAGAWA, MASASHI, HIRAOKA, MIZUHO, OGUCHI, YOSHIHIRO
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator KAWADE, HISAAKI
YOSHINO, HITOSHI
NAGANO, KAZUMI
MIURA, KYO
IKOMA, KEIKO
MIYAGAWA, MASASHI
HIRAOKA, MIZUHO
OGUCHI, YOSHIHIRO
description An optical card comprises a transparent substrate having a track groove on its surface, an optical recording layer provided on said track groove, and an opaque card substrate provided in such a manner that it may be contiguous to said optical recording layer, wherein an unrecordable part (25) is provided at an end of said track groove formed on the surface of the transparent substrate.
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language eng ; fre ; ger
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title Optical card and process for producing it
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