MAGNETIC RECORDING MEDIA
First Claim
1. A magnetic recording medium which comprises a non-magnetic substrate and a magnetic layer formed on the non-magnetic substrate, wherein the magnetic layer contains magnetic powder with a particle size of 40 nm or less and a binder, an autocovariance length Ma of the magnetic layer in its lengthwise direction is 70 nm or less, and an autocovariance length Mb of the magnetic layer in its widthwise direction is 80 nm or less, and a ratio of the autocovariance length Ma to the autocovariance length Mb (Ma/Mb) is from 0.80 to 1.20.
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Accused Products
Abstract
A magnetic recording medium which has a non-magnetic substrate and a magnetic layer formed on the non-magnetic substrate, in which the magnetic layer contains magnetic powder with a particle size of 40 nm or less and a binder, an autocovariance length Ma of the magnetic layer in its lengthwise direction is 70 nm or less, an autocovariance length Mb of the magnetic layer in its widthwise direction is 80 nm or less, and a ratio Ma/Mb is from 0.80 to 1.20.
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Citations
2 Claims
- 1. A magnetic recording medium which comprises a non-magnetic substrate and a magnetic layer formed on the non-magnetic substrate, wherein the magnetic layer contains magnetic powder with a particle size of 40 nm or less and a binder, an autocovariance length Ma of the magnetic layer in its lengthwise direction is 70 nm or less, and an autocovariance length Mb of the magnetic layer in its widthwise direction is 80 nm or less, and a ratio of the autocovariance length Ma to the autocovariance length Mb (Ma/Mb) is from 0.80 to 1.20.
Specification
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- Resources
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Current AssigneeHitachi Maxell Limited (Maxell, Ltd.)
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Original AssigneeHitachi Maxell Limited (Maxell, Ltd.)
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InventorsINOUE, Tetsutaro
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Application NumberUS12/642,619Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current428/846CPC Class CodesG11B 5/70 on a base layerG11B 5/70626 containing non-metallic sub...G11B 5/714 characterised by the dimens...
