Magnetic recording medium
AssigneeHitachi Maxell, Ltd.
InventorTadashi Soui
Life of this patent
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Abstract
A magnetic recording medium having excellent reliability with minimum drop-out including a support film and a magnetic layer containing magnetic powder particles dispersed in a binder resin and a lubricant having a total extract content of from 10 to 100 mg/m.sup.2 and a content at the surface of the magnetic layer not larger than 1.0 mg/m.sup.2.
Claims6
A magnetic recording medium including a support film and a magnetic layer comprising magnetic powder particles dispersed in a binder resin and a lubricant, wherein total extract content of said lubricant in said magnetic layer is from 10 to 100 mg/m.sup.2 while the content of said lubricant at the surface of said magnetic layer is not greater than 1.0 mg/m.sup.2 as measured by ESCA including measuring C1s photoelectron spectrum of said lubricant and C1s photoelectron spectrum of said magnetic layer before and after washing a surface of said magnetic layer by normal hexane.
A magnetic recording medium including a support film and a magnetic layer comprising magnetic powder particles dispersed in a binder resin and a lubricant, wherein total extract content of said lubricant in said magnetic layer is from 10 to 100 mg/m.sup.2 while the content of said lubricant at the surface of said magnetic layer is not greater than 1.0 mg/m.sup.2 as measured by ESCA including measuring C1s photoelectron spectrum of said lubricant and C1s photoelectron spectrum of said magnetic layer before and after washing a surface of said magnetic layer by normal hexane, wherein said lubricant is Oleyl oleate.
Dependencies are inferred from the claim text.