Method and apparatus for burnishing magnetic disks

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5431592
SERIAL NO

08132857

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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While a magnetic disk is being rotated, compressed air is jetted to corresponding positions on the two surfaces of the magnetic disk. An abrasive tape, which has tension in its longitudinal direction, is interposed between at least either one of the two surfaces of the magnetic disk and the compressed air jetted thereto such that the compressed air may now be jetted to the abrasive tape. The air pressure of the compressed air, which is jetted to the abrasive tape, and the tension on the abrasive tape are adjusted such that the abrasive tape may be formed into a bent shape having a level of rigidity appropriate for pushing the magnetic disk. The bent shape portion of the abrasive tape is brought into sliding contact with the magnetic surface of the magnetic disk, and the region of the sliding contact of the magnetic surface of the magnetic disk with the abrasive tape is thereby uniformly burnished.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FUJIFILM CORPORATIONTOKYO12444
FUJI PHOTO FILM CO., LTD.KANAGAWA5079

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakata, Tomohiro Kanagawa, JP 34 95

Cited Art Landscape

Patent Info (Count) # Cites Year
 
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. (1)
* 5018311 Magnetic disk burnishing method and apparatus 15 1989
 
FUJI PHOTO FILM CO., LTD. (1)
* 4656790 Burnishing method and apparatus for magnetic disk 31 1985
 
KLA-TENCOR CORPORATION (1)
6462817 Method of monitoring ion implants by examination of an overlying masking material 51 2000
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
MINNESOTA MINING AND MANUFACTURING COMPANY (1)
* 5645471 Method of texturing a substrate using an abrasive article having multiple abrasive natures 59 1995
 
Other [Check patent profile for assignment information] (1)
* 2008/0188,167 Substrate processing apparatus 7 2008
 
SONY CORPORATION (2)
* 5669804 Magnetic tape surface treatment method and apparatus 5 1995
* 6592435 Method of and apparatus for manufacturing recording medium 8 2001
 
Ernst Thielenhaus KG (1)
* 5730647 Apparatus for fine-grinding a crankshaft 6 1997
 
SEAGATE TECHNOLOGY LLC (6)
6230380 Slider for burnishing a disc 18 1998
6322431 Burnish head with ion milled aerodynamic pads configured in an elliptical pattern 29 1999
6503132 Hybrid burnish/glide head with advanced air bearing fly height control rails 15 2001
7194802 Tool for certifying a head-gimbal assembly 19 2002
* 2003/0182,788 Tool for certifying a head-gimbal assembly 1 2002
7690100 Techniques for certifying a head-gimbal assembly 1 2007
 
WD MEDIA, INC. (1)
6283838 Burnishing tape handling apparatus and method 63 1999
 
WD Media, LLC (2)
8808459 Method for cleaning post-sputter disks using tape and diamond slurry 0 2010
* 9296082 Disk buffing apparatus with abrasive tape loading pad having a vibration absorbing layer 0 2013
 
APPLIED MATERIALS, INC. (2)
* 5800248 Control of chemical-mechanical polishing rate across a substrate surface 99 1996
* 5762536 Sensors for a linear polisher 113 1997
 
FUJI PHOTO FILM CO., LTD. (1)
* 5695386 Cleaning method using abrasive tape 9 1996
 
KABUSHIKI KAISHA TOSHIBA (2)
* 7367873 Substrate processing apparatus 15 2003
* 2004/0106,363 Substrate processing apparatus 3 2003
 
APPLETON COATED LLC (1)
* 6243934 Paper polishing belt and method of polishing paper 1 1995
* Cited By Examiner