JPH01140616U - - Google Patents
Info
- Publication number
- JPH01140616U JPH01140616U JP1988034816U JP3481688U JPH01140616U JP H01140616 U JPH01140616 U JP H01140616U JP 1988034816 U JP1988034816 U JP 1988034816U JP 3481688 U JP3481688 U JP 3481688U JP H01140616 U JPH01140616 U JP H01140616U
- Authority
- JP
- Japan
- Prior art keywords
- texture
- magnetic disk
- area
- film
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011521 glass Substances 0.000 claims 1
- 239000010687 lubricating oil Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
- G11B23/505—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers
- G11B23/507—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers combined with means for reducing influence of physical parameters, e.g. temperature change, moisture
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
- G11B5/82—Disk carriers
Landscapes
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988034816U JPH01140616U (US06229276-20010508-P00022.png) | 1988-03-16 | 1988-03-16 | |
US07/451,789 US4996622A (en) | 1988-03-16 | 1989-12-18 | Magnetic disk with textured area on part of disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988034816U JPH01140616U (US06229276-20010508-P00022.png) | 1988-03-16 | 1988-03-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01140616U true JPH01140616U (US06229276-20010508-P00022.png) | 1989-09-26 |
Family
ID=12424731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988034816U Pending JPH01140616U (US06229276-20010508-P00022.png) | 1988-03-16 | 1988-03-16 |
Country Status (2)
Country | Link |
---|---|
US (1) | US4996622A (US06229276-20010508-P00022.png) |
JP (1) | JPH01140616U (US06229276-20010508-P00022.png) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5202810A (en) * | 1989-04-27 | 1993-04-13 | Hitachi, Ltd. | Magnetic disk having an improved surface configuration |
DE69103778T2 (de) * | 1990-01-19 | 1995-04-27 | Sony Corp | Magnetische Aufzeichnungsplatte. |
US5108781A (en) * | 1990-03-12 | 1992-04-28 | Magnetic Peripherals Inc. | Process for manufacturing selectively textured magnetic recording media |
JPH0485771A (ja) * | 1990-07-27 | 1992-03-18 | Hitachi Ltd | 磁気記録装置 |
US5210673A (en) * | 1991-09-09 | 1993-05-11 | Hitachi Metals, Ltd. | Thin-film hard disk magnetic medium |
WO1993012520A1 (en) * | 1991-12-17 | 1993-06-24 | Certus Magnetics | Magnetic disk medium with designed textured surfaces and controlled surface roughness and method of providing same |
EP0579399A2 (en) * | 1992-07-09 | 1994-01-19 | Pilkington Plc | Glass substrate for a magnetic disc and manufacture thereof |
US5534321A (en) * | 1993-05-20 | 1996-07-09 | Corning Incorporated | Disk substrate for magnetic memory devices |
GB9400259D0 (en) * | 1994-01-07 | 1994-03-02 | Pilkington Plc | Substrate for a magnetic disc and manufacture thereof |
US6075677A (en) * | 1995-07-27 | 2000-06-13 | Seagate Technology, Inc. | Method for positioning a read/write head to reduce wear for proximity recording in a magnetic disk storage system |
US6048255A (en) * | 1995-08-22 | 2000-04-11 | Seagate Technology, Inc. | Pulsed laser surface treatments for magnetic recording media |
US6218033B1 (en) | 1996-02-26 | 2001-04-17 | Akashic Memories Corporation | Magnetic recording media having CrTiX underlayers to reduce circumferential/radial anisotropy and methods for their production |
DE19882200T1 (de) * | 1997-03-18 | 2000-03-16 | Seagate Technology | Magnetische Medien mit unregelmäßig bzw. zufallsmäßig positionierten Strukturmerkmalen |
JP3209509B2 (ja) * | 1997-03-28 | 2001-09-17 | インターナショナル・ビジネス・マシーンズ・コーポレーション | ディスク状記録装置及びディスクドライブ装置 |
US6068891A (en) * | 1997-08-15 | 2000-05-30 | Komag, Inc. | Method for laser texturing a glass ceramic substrate and the resulting substrate |
US5959814A (en) * | 1997-09-16 | 1999-09-28 | Quantum Corporation | Magnetic disk having separate park and take-off zones |
US6351339B1 (en) | 1998-05-11 | 2002-02-26 | Ronni Corporation | Multi-dimensionally oriented magnetic field information storage system |
US6320728B1 (en) * | 1998-05-19 | 2001-11-20 | Seagate Technology Llc | Laser textured magnetic surface micro-ridges/grooves to enhance magnetic recording performance |
AU2880100A (en) | 1999-02-12 | 2000-08-29 | General Electric Company | Data storage media |
US7179551B2 (en) | 1999-02-12 | 2007-02-20 | General Electric Company | Poly(arylene ether) data storage media |
CN100391620C (zh) * | 2001-04-19 | 2008-06-04 | 通用电气公司 | 旋涂介质 |
US7301726B1 (en) * | 2004-11-04 | 2007-11-27 | Komag, Inc. | Banded LZT CSS zone |
CN108701470B (zh) * | 2016-02-16 | 2021-02-23 | L2驱动有限公司 | 用于减小磁头-介质间隔的读/写磁头的主动控制 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4152487A (en) * | 1976-12-17 | 1979-05-01 | Nippon Electric Co., Ltd. | Magnetic record member |
US4738885A (en) * | 1986-02-24 | 1988-04-19 | Kyocera Corporation | Magnetic disk, substrate therefor and process for preparation thereof |
-
1988
- 1988-03-16 JP JP1988034816U patent/JPH01140616U/ja active Pending
-
1989
- 1989-12-18 US US07/451,789 patent/US4996622A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4996622A (en) | 1991-02-26 |