Magnetic recording medium and method of manufacturing the same
A technology of magnetic recording medium and manufacturing method, which is applied in the directions of magnetic recording, magnetic recording layer, data recording, etc., can solve the problems of bad influence of recording and reproducing characteristics of magnetic head search durability, unstable head floating, etc., so as to reduce lubricant retention, The effect of suppressing movement
Inactive Publication Date: 2007-02-28
FUJI ELECTRIC CO LTD
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Problems solved by technology
When the magnetic head is in contact with the stagnant place of the lubricant, the lubricant moves to the magnetic head, and the floating of the magnetic head becomes unstable, which has a bad influence on the recording and reproduction characteristics and the durability of the magnetic head seeking.
Method used
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Embodiment 1
[0061] A magnetic recording medium having the configuration shown in FIG. 5 using Z-tetraol as a lubricating layer is manufactured, and an example of wiping off the end portion will be described.
[0062] As the non-magnetic substrate 31, a glass substrate having an outer diameter of 2.5 inches and a plate thickness of 0.635 mm was used. After the substrate was sufficiently cleaned, it was introduced into a sputtering device, and a Cr-based multilayer underlayer 32 was formed with a total film thickness of 25 nm. Next, a Co-based magnetic recording layer 33 was formed with a thickness of 15 nm, and then a nitrogen-added carbon protective layer 34 with a film thickness of 4 nm was formed, then taken out from the sputtering apparatus, and a lubricating layer 35 was formed by a dip coating method. Use Z-tetraol as lubricant, dilute it with a fluorocarbon solvent to 0.03wt%, form a film at a pulling speed of 1.0mm / sec, and apply a lubricating layer with a film thickness of 1.2nm i...
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Abstract
A method of manufacturing a magnetic recording medium having a lubrication layer is disclosed. The method includes a step of simultaneously pressing a processing tape including a solvent against the edge face and the peripheral part of the data surface of the magnetic recording medium using a tape pressing device to wipe a liquid lubricant off while rotating the magnetic recording medium, after the liquid lubricant has been applied onto the protective layer. The non-magnetic substrate preferably has a thickness of 0.635 mm or less. The wiping with the processing tape is preferably performed after a heating process that follows the application of the liquid lubricant. The method makes the thickness of a lubrication layer of a magnetic recording medium uniform in a peripheral part thereof to allow a magnetic head to fly with stability.
Description
technical field [0001] The present invention relates to a magnetic recording medium such as a magnetic disk mounted on a fixed magnetic disk device or the like used as an external storage device of an information processing device, and a method for manufacturing the same. Possible magnetic recording media and methods for their manufacture. Background technique [0002] Fixed magnetic disk devices are often used as information processing devices such as computers and external storage devices, and in recent years, fixed magnetic disk devices have also begun to be used as small storage devices such as mobile phones and MP3 players. [0003] The magnetic recording medium mounted on this fixed magnetic disk unit is used for magnetically recording information, and generally a base layer, a magnetic recording layer, and a protective layer are laminated on a substrate, and a liquid lubricating layer is then applied. A disk-shaped non-magnetic material such as aluminum alloy and gla...
Claims
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IPC IPC(8): G11B5/725G11B5/84
CPCG11B5/8408G11B5/7325G11B5/739
Inventor 草川和大白井信二
Owner FUJI ELECTRIC CO LTD