JPH05242527

JPH05242527

PURPOSE:To increase the density of the optical disk which is constituted by coating at least the photoirradiated surface of the optical disk with a resin coating film and to improve the productivity thereof by forming the coating film to the film thicknesses having the uniformity of a specific range...

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Hauptverfasser: YONEMURA ARITAMI, HASHIMOTO EIICHI
Format: Patent
Sprache:eng
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator YONEMURA ARITAMI
HASHIMOTO EIICHI
description PURPOSE:To increase the density of the optical disk which is constituted by coating at least the photoirradiated surface of the optical disk with a resin coating film and to improve the productivity thereof by forming the coating film to the film thicknesses having the uniformity of a specific range. CONSTITUTION:The optical disk is so formed that the thickness of the coating film 6 thereof satisfies 1000x(Do-Di)/(Ro-Ri)
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CONSTITUTION:The optical disk is so formed that the thickness of the coating film 6 thereof satisfies 1000x(Do-Di)/(Ro-Ri)&lt;0.02. The quantity at which the film constituting components are concentrated to the resin is low in such a case and, therefore, the influence on the warpage over the entire part of the optical disk is small and the quantity thereof can be suppressed at a low level. Then, the optical disk which is efficient and is suitable for high-speed rotation with decreased warpage is obtd. The optical disk having the higher density is thus obtd. and a great contribution is made on the improvement in the productivity in production. In the equation, Do is the coating film thickness (mm) in the outermost peripheral part of the recording film forming part, Di is the coating film thickness (mm) in the innermost peripheral part of the recording film forming part, Ro is the radius (mm) in the outermost peripheral part of the recording film forming part, Ri is the radius (mm) in the innermost peripheral part of the recording film forming part.</description><edition>5</edition><language>eng</language><subject>INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; PHYSICS</subject><creationdate>1993</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19930921&amp;DB=EPODOC&amp;CC=JP&amp;NR=H05242527A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19930921&amp;DB=EPODOC&amp;CC=JP&amp;NR=H05242527A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YONEMURA ARITAMI</creatorcontrib><creatorcontrib>HASHIMOTO EIICHI</creatorcontrib><title>JPH05242527</title><description>PURPOSE:To increase the density of the optical disk which is constituted by coating at least the photoirradiated surface of the optical disk with a resin coating film and to improve the productivity thereof by forming the coating film to the film thicknesses having the uniformity of a specific range. 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CONSTITUTION:The optical disk is so formed that the thickness of the coating film 6 thereof satisfies 1000x(Do-Di)/(Ro-Ri)&lt;0.02. The quantity at which the film constituting components are concentrated to the resin is low in such a case and, therefore, the influence on the warpage over the entire part of the optical disk is small and the quantity thereof can be suppressed at a low level. Then, the optical disk which is efficient and is suitable for high-speed rotation with decreased warpage is obtd. The optical disk having the higher density is thus obtd. and a great contribution is made on the improvement in the productivity in production. 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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title JPH05242527
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