CA974046A - Magnetic recording coating - Google Patents

Magnetic recording coating

Info

Publication number: CA974046A
Authority: CA; Canada
Prior art keywords: magnetic recording; recording coating; coating; magnetic; recording
Prior art date: 1970-06-08
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

Application number

CA114,688A

Other versions

CA114688S (en

Inventor

Cecil R. Hawkins

Ronald E. Kubec

Joseph E. Haefele

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.)

1970-06-08

Filing date

1971-06-03

Publication date

1975-09-09

1971-06-03 Application filed by International Business Machines Corp filed Critical International Business Machines Corp

1975-09-09 Application granted granted Critical

1975-09-09 Publication of CA974046A publication Critical patent/CA974046A/en

Status Expired 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
- G11B5/62—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
- G11B5/7085—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 non-magnetic abrasive particles
- 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

CA114,688A 1970-06-08 1971-06-03 Magnetic recording coating Expired CA974046A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US4428470A	1970-06-08	1970-06-08

Publications (1)

Publication Number	Publication Date
CA974046A true CA974046A (en)	1975-09-09

Family

ID=21931507

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA114,688A Expired CA974046A (en)	1970-06-08	1971-06-03	Magnetic recording coating

Country Status (6)

Country	Link
BE (1)	BE768176A (en)
CA (1)	CA974046A (en)
DE (1)	DE2124174A1 (en)
FR (1)	FR2096031A5 (en)
GB (1)	GB1342797A (en)
NL (1)	NL7106779A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2512450C3 (en) *	1975-03-21	1981-11-12	Basf Ag, 6700 Ludwigshafen	Layer magnetogram carrier
JPS5758227A (en) *	1980-09-25	1982-04-07	Tdk Corp	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
EP0179934B1 (en) *	1984-10-31	1988-04-27	Ibm Deutschland Gmbh	Magnetic disc and process for producing it
EP0180651B1 (en) *	1984-10-31	1988-09-07	Ibm Deutschland Gmbh	Magnetic disc and process for producing it

1971
- 1971-05-11 GB GB1419071A patent/GB1342797A/en not_active Expired
- 1971-05-15 DE DE19712124174 patent/DE2124174A1/en not_active Ceased
- 1971-05-18 NL NL7106779A patent/NL7106779A/xx not_active Application Discontinuation
- 1971-06-01 FR FR7120612A patent/FR2096031A5/fr not_active Expired
- 1971-06-03 CA CA114,688A patent/CA974046A/en not_active Expired
- 1971-06-07 BE BE768176A patent/BE768176A/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
GB1342797A (en)	1974-01-03
DE2124174A1 (en)	1971-12-16
BE768176A (en)	1971-12-07
NL7106779A (en)	1971-12-10
FR2096031A5 (en)	1972-02-11

Publication	Publication Date	Title
AU442671B2 (en)	1973-11-29	Magnetic recording tape
CA971834A (en)	1975-07-29	Magnetic recording member
CA947956A (en)	1974-05-28	Magnetic head assembly
CA918799A (en)	1973-01-09	Magnetic tape duplicator
CA953817A (en)	1974-08-27	Magnetic disc assembly
CA974046A (en)	1975-09-09	Magnetic recording coating
CA936955A (en)	1973-11-13	Magnetic transducing head
CA925119A (en)	1973-04-24	Magnetic tape cartridge
CA929660A (en)	1973-07-03	Magnetic tape printer
CA980185A (en)	1975-12-23	Magnetic recording members
CA957575A (en)	1974-11-12	Magnetic recording medium
CA851138A (en)	1970-09-08	Magnetic tape
CA844559A (en)	1970-06-16	Magnetic recording materials
CA833183A (en)	1970-01-27	Magnetic recording system
AU454758B2 (en)	1972-07-13	Magnetic tape cartridge
CA851573A (en)	1970-09-15	Magnetic tape cartridge
CA815483A (en)	1969-06-17	Magnetic recording tape
CA851671A (en)	1970-09-15	Magnetic record members
CA846142A (en)	1970-07-07	Magnetic recording medium
CA816327A (en)	1969-06-24	Magnetic recording head
CA820518A (en)	1969-08-12	Magnetic recording head
CA827333A (en)	1969-11-11	Magnetic recording head
CA813525A (en)	1969-05-20	Magnetic recording head
CA859328A (en)	1970-12-22	Narrow track magnetic recording
CA923616A (en)	1973-03-27	Magnetic recording device