JPH047019B
PURPOSE:To grasp whether or not grooves of recording tracks are formed to specific depth at a stage wherein an optical disk substrate is coated with a recording medium by forming specific pit arrays along the outer periphery, etc., of a track area for signal recording. CONSTITUTION:The optical disk...
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| creator | NAGATANI KYOSHI |
| description | PURPOSE:To grasp whether or not grooves of recording tracks are formed to specific depth at a stage wherein an optical disk substrate is coated with a recording medium by forming specific pit arrays along the outer periphery, etc., of a track area for signal recording. CONSTITUTION:The optical disk substrate 5 has guide grooves as tracking guides, i.e. track area 6 for signal recording and a signal area 7 where projection and recessed pitch arrays formed at a constant frequency. The signal area 7 of the projection and recessed pit arrays formed on said substrate 5 except in the track area 6 for signal recording is a means for monitoring whether the grooves in the signal recording area 6 are formed suitably or not. The defect generation rate of the optical disk substrate 5 after the recording medium is formed is grasped quantitatively to control and secure the quality of the substrate 5. |
| format | Patent |
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CONSTITUTION:The optical disk substrate 5 has guide grooves as tracking guides, i.e. track area 6 for signal recording and a signal area 7 where projection and recessed pitch arrays formed at a constant frequency. The signal area 7 of the projection and recessed pit arrays formed on said substrate 5 except in the track area 6 for signal recording is a means for monitoring whether the grooves in the signal recording area 6 are formed suitably or not. The defect generation rate of the optical disk substrate 5 after the recording medium is formed is grasped quantitatively to control and secure the quality of the substrate 5.</description><language>eng</language><subject>INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; PHYSICS</subject><creationdate>1992</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&date=19920207&DB=EPODOC&CC=JP&NR=H047019B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19920207&DB=EPODOC&CC=JP&NR=H047019B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NAGATANI KYOSHI</creatorcontrib><title>JPH047019B</title><description>PURPOSE:To grasp whether or not grooves of recording tracks are formed to specific depth at a stage wherein an optical disk substrate is coated with a recording medium by forming specific pit arrays along the outer periphery, etc., of a track area for signal recording. CONSTITUTION:The optical disk substrate 5 has guide grooves as tracking guides, i.e. track area 6 for signal recording and a signal area 7 where projection and recessed pitch arrays formed at a constant frequency. The signal area 7 of the projection and recessed pit arrays formed on said substrate 5 except in the track area 6 for signal recording is a means for monitoring whether the grooves in the signal recording area 6 are formed suitably or not. The defect generation rate of the optical disk substrate 5 after the recording medium is formed is grasped quantitatively to control and secure the quality of the substrate 5.</description><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1992</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZODyCvAwMDE3MLR04mFgTUvMKU7lhdLcDIpuriHOHrqpBfnxqcUFicmpeakl8QgNTkbGxKgBADBfG6A</recordid><startdate>19920207</startdate><enddate>19920207</enddate><creator>NAGATANI KYOSHI</creator><scope>EVB</scope></search><sort><creationdate>19920207</creationdate><title>JPH047019B</title><author>NAGATANI KYOSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH047019BB23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1992</creationdate><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>NAGATANI KYOSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NAGATANI KYOSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>JPH047019B</title><date>1992-02-07</date><risdate>1992</risdate><abstract>PURPOSE:To grasp whether or not grooves of recording tracks are formed to specific depth at a stage wherein an optical disk substrate is coated with a recording medium by forming specific pit arrays along the outer periphery, etc., of a track area for signal recording. CONSTITUTION:The optical disk substrate 5 has guide grooves as tracking guides, i.e. track area 6 for signal recording and a signal area 7 where projection and recessed pitch arrays formed at a constant frequency. The signal area 7 of the projection and recessed pit arrays formed on said substrate 5 except in the track area 6 for signal recording is a means for monitoring whether the grooves in the signal recording area 6 are formed suitably or not. The defect generation rate of the optical disk substrate 5 after the recording medium is formed is grasped quantitatively to control and secure the quality of the substrate 5.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS |
| title | JPH047019B |
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