Method of making a magnetic recording medium
A magnetic recording medium having a magnetic coating containing therein ferromagnetic metal powder provided on a base film, wherein the magnetic recording medium being characterized in that the surface roughness of the magnetic coating, i.e., the surface roughness Rrms (a unit of measurement of mu...
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| creator | YAMAKAWA YOSHISUKE WATANABE AKIO TOKUOKA YASUMICHI |
| description | A magnetic recording medium having a magnetic coating containing therein ferromagnetic metal powder provided on a base film, wherein the magnetic recording medium being characterized in that the surface roughness of the magnetic coating, i.e., the surface roughness Rrms (a unit of measurement of mu m) with respect to a waveform having a wavelength P in a range of from 3 to 50 mu m out of groups of waveforms constituting the cross-sectional waveform of the surface of the magnetic coating, satisfies the following equation. Rrms |
| format | Patent |
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Rrms</=7.5x10-4P+7.5x10-3 where 3</=P</=50 mu m.</description><edition>2</edition><language>eng</language><subject>ADHESIVES ; CHEMICAL PAINT OR INK REMOVERS ; CHEMISTRY ; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS ; CORRECTING FLUIDS ; DYES ; FILLING PASTES ; INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; INKS ; METALLURGY ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; NATURAL RESINS ; PAINTS ; PASTES OR SOLIDS FOR COLOURING OR PRINTING ; PHYSICS ; POLISHES ; USE OF MATERIALS THEREFOR ; WOODSTAINS</subject><creationdate>1987</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=19870804&DB=EPODOC&CC=US&NR=4684546A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25569,76552</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19870804&DB=EPODOC&CC=US&NR=4684546A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YAMAKAWA; YOSHISUKE</creatorcontrib><creatorcontrib>WATANABE; AKIO</creatorcontrib><creatorcontrib>TOKUOKA; YASUMICHI</creatorcontrib><title>Method of making a magnetic recording medium</title><description>A magnetic recording medium having a magnetic coating containing therein ferromagnetic metal powder provided on a base film, wherein the magnetic recording medium being characterized in that the surface roughness of the magnetic coating, i.e., the surface roughness Rrms (a unit of measurement of mu m) with respect to a waveform having a wavelength P in a range of from 3 to 50 mu m out of groups of waveforms constituting the cross-sectional waveform of the surface of the magnetic coating, satisfies the following equation. 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Rrms</=7.5x10-4P+7.5x10-3 where 3</=P</=50 mu m.</abstract><edition>2</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PHYSICS POLISHES USE OF MATERIALS THEREFOR WOODSTAINS |
| title | Method of making a magnetic recording medium |
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