DE3481098D1 - Verfahren zur herstellung von magnetischen aufzeichnungsplatten. - Google Patents

Verfahren zur herstellung von magnetischen aufzeichnungsplatten.

Info

Publication number: DE3481098D1
Authority: DE; Germany
Prior art keywords: magnetic recording; producing magnetic; recording disks; disks; producing
Prior art date: 1983-08-31
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.): Expired - Fee Related

Application number

DE8484305795T

Other languages

English (en)

Inventor

James Economy

Anagnostis Efsatat Zachariades

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

International Business Machines Corp

Original Assignee

International Business Machines Corp

Priority date (The priority date 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 date listed.)

1983-08-31

Filing date

1984-08-24

Publication date

1990-02-22

1984-08-24 Application filed by International Business Machines Corp filed Critical International Business Machines Corp

1990-02-22 Application granted granted Critical

1990-02-22 Publication of DE3481098D1 publication Critical patent/DE3481098D1/de

2004-08-25 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

Classifications

- 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/708—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by addition of non-magnetic particles to the layer

DE8484305795T 1983-08-31 1984-08-24 Verfahren zur herstellung von magnetischen aufzeichnungsplatten. Expired - Fee Related DE3481098D1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US06/528,318 US4499122A (en)	1983-08-31	1983-08-31	Process for finishing surfaces achieving improved magnetic disk performance

Publications (1)

Publication Number	Publication Date
DE3481098D1 true DE3481098D1 (de)	1990-02-22

Family

ID=24105181

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8484305795T Expired - Fee Related DE3481098D1 (de)	1983-08-31	1984-08-24	Verfahren zur herstellung von magnetischen aufzeichnungsplatten.

Country Status (4)

Country	Link
US (1)	US4499122A (de)
EP (1)	EP0139403B1 (de)
JP (1)	JPS60101725A (de)
DE (1)	DE3481098D1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0126790B1 (de) *	1983-05-27	1986-09-03	Ibm Deutschland Gmbh	Zusammengesetzte Magnetplatte
US4870524A (en) *	1984-07-06	1989-09-26	Furukawa Aluminum Co., Ltd.	Substrate for rigid disk storage media
FR2638016A1 (fr) *	1988-10-18	1990-04-20	Kodak Pathe	Procede de traitement de surface de couches magnetiques
US5447747A (en) *	1994-08-22	1995-09-05	Minnesota Mining And Manufacturing Company	Method and apparatus for smoothing gravure coatings in the manufacture of magnetic recording tape
JPH10504674A (ja) *	1994-08-22	1998-05-06	イメイション・コーポレイション	磁気記録媒体の製造における可帯磁層の差速度グラビアコーティング
US5506017A (en) *	1995-06-07	1996-04-09	Komag Incorporated	Method for texturing magnetic media
JP3608858B2 (ja) *	1995-12-18	2005-01-12	三菱電機株式会社	赤外線検出器及びその製造方法
IL173815A0 (en) *	2006-02-20	2006-07-05	Weissman Aharon	An edible free-flowing plant-origin powder and a method for producing the same
US20080003378A1 (en) *	2006-06-30	2008-01-03	Imation Corp.	Fluid jet printing recording media layers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2688567A (en) *	1952-01-17	1954-09-07	Ernest W Franck	Method of smoothing the coated surfaces of magnetic tape
DE1286932B (de) *	1965-12-04	1969-01-09	Hegenscheidt Kg Wilhelm	Vorrichtung zum Glattwalzen von ebenen Flaechen
US3622386A (en) *	1968-08-08	1971-11-23	Memorex Corp	Method of making magnetic recording discs
FR2243035B2 (de) *	1973-09-11	1979-06-01	Chabas Et Besson Sa
DE2611032A1 (de) *	1976-03-16	1977-09-29	Dysan Corp	Verfahren und vorrichtung zum presspolieren von flexiblen aufzeichnungstraegern
JPS54134407A (en) *	1978-04-10	1979-10-18	Tdk Corp	Smoothening device for magnetic recording medium
JPS5555439A (en) *	1978-10-18	1980-04-23	Hitachi Ltd	Magnetic recording medium composite
JPS57143727A (en) *	1981-02-27	1982-09-06	Fuji Photo Film Co Ltd	Magnetic recording medium
US4451532A (en) *	1981-05-29	1984-05-29	International Business Machines Corporation	Magnetic recording composition employing mono-dispersed spherical load-bearing particles
JPS58100230A (ja) *	1981-12-10	1983-06-14	Matsushita Electric Ind Co Ltd	磁気記録媒体の製造方法

1983
- 1983-08-31 US US06/528,318 patent/US4499122A/en not_active Expired - Fee Related
1984
- 1984-08-20 JP JP59171667A patent/JPS60101725A/ja active Pending
- 1984-08-24 DE DE8484305795T patent/DE3481098D1/de not_active Expired - Fee Related
- 1984-08-24 EP EP84305795A patent/EP0139403B1/de not_active Expired

Also Published As

Publication number	Publication date
JPS60101725A (ja)	1985-06-05
EP0139403A3 (en)	1986-12-17
US4499122A (en)	1985-02-12
EP0139403A2 (de)	1985-05-02
EP0139403B1 (de)	1990-01-17

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Legal Events

Date	Code	Title	Description
1991-02-07	8364	No opposition during term of opposition
1993-08-05	8339	Ceased/non-payment of the annual fee