GB1380158A - Manufacture of magnetic recording media - Google Patents

Manufacture of magnetic recording media

Info

Publication number
GB1380158A
GB1380158A GB1807272A GB1807272A GB1380158A GB 1380158 A GB1380158 A GB 1380158A GB 1807272 A GB1807272 A GB 1807272A GB 1807272 A GB1807272 A GB 1807272A GB 1380158 A GB1380158 A GB 1380158A
Authority
GB
United Kingdom
Prior art keywords
magnetic
polyester
coated
pigment dispersion
shear
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.)
Expired
Application number
GB1807272A
Other languages
English (en)
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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.)
Filing date
Publication date
Priority claimed from DE19712119569 external-priority patent/DE2119569C/de
Application filed by BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB1380158A publication Critical patent/GB1380158A/en
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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/842—Coating a support with a liquid magnetic dispersion
    • G11B5/845—Coating a support with a liquid magnetic dispersion in a magnetic field

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
GB1807272A 1971-04-22 1972-04-19 Manufacture of magnetic recording media Expired GB1380158A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712119569 DE2119569C (de) 1971-04-22 Verfahren zur Herstellung von Magneto grammtragern

Publications (1)

Publication Number Publication Date
GB1380158A true GB1380158A (en) 1975-01-08

Family

ID=5805495

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1807272A Expired GB1380158A (en) 1971-04-22 1972-04-19 Manufacture of magnetic recording media

Country Status (3)

Country Link
US (1) US3836395A (cg-RX-API-DMAC7.html)
FR (1) FR2134053B1 (cg-RX-API-DMAC7.html)
GB (1) GB1380158A (cg-RX-API-DMAC7.html)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996407A (en) * 1973-12-28 1976-12-07 Basf Aktiengesellschaft Magnetic recording media
DE2722078C3 (de) * 1977-05-16 1980-07-10 Basf Ag, 6700 Ludwigshafen Verfahren und vorrichtung zur herstellung von magnetogrammtraegern
DE2846623A1 (de) * 1978-10-26 1980-05-08 Basf Ag Verfahren zur herstellung von schichtmagnetogrammtraegern
JPH05212221A (ja) * 1992-02-05 1993-08-24 Fuji Photo Film Co Ltd フィルター装置
US5666712A (en) * 1995-07-14 1997-09-16 Advanced Design & Research Corp. Method of making designs using magnetic materials
DE19749315A1 (de) * 1997-11-07 1999-05-12 Emtec Magnetics Gmbh Verfahren zur Herstellung einer Magnetdispersion für Magnetaufzeichnungsträger und damit hergestellter Magnetaufzeichnungsträger
US7160481B2 (en) * 2003-01-28 2007-01-09 Tdk Corporation Method for manufacturing magnetic paint, and magnetic recording medium
DE10342826B3 (de) * 2003-09-17 2005-05-12 Degussa Ag Dispersion von pyrogen hergestelltem Ceroxid

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1837772A (en) * 1927-04-11 1931-12-22 British Dyestuffs Corp Ltd Process for the preparation of solid bodies in finely divided states
US2212641A (en) * 1937-12-27 1940-08-27 Du Pont Process for dispersing pigments
US2581414A (en) * 1948-08-13 1952-01-08 Du Pont Process for dispersing pigments in film-forming materials
US3526598A (en) * 1968-05-02 1970-09-01 Bell & Howell Co Manufacture of magnetic recording media

Also Published As

Publication number Publication date
DE2119569A1 (cg-RX-API-DMAC7.html) 1972-05-25
FR2134053B1 (cg-RX-API-DMAC7.html) 1976-08-06
FR2134053A1 (cg-RX-API-DMAC7.html) 1972-12-01
DE2119569B2 (de) 1972-05-25
US3836395A (en) 1974-09-17

Similar Documents

Publication Publication Date Title
GB1488483A (en) Credit cards and other security documents
DE2421469A1 (de) Magnetische verschluesselungseinrichtung fuer dokumente
JPS5758227A (en) Magnetic recording medium
CA1168855A (en) Magnetic fluid
IL70692A (en) Agents for tagging highly dispersed systems and their production
JPS55139634A (en) Magnetic recording medium
GB1418240A (en) Magnetic recording element
US4239637A (en) Magnetic material for recording media
DE3732116C2 (cg-RX-API-DMAC7.html)
JPS5661035A (en) Magnetic recording medium
GB1403204A (en) Magnetic recording media and a process for their production
GB1384918A (en) Magnetic record medium and method of treating same
GB1290834A (cg-RX-API-DMAC7.html)
GB1489387A (en) Magnetic recording media
GB1190417A (en) Production of Magnetic Recording Media
GB1450241A (en) Methods of making magnetic metal particles coated with a protective layer
GB1448470A (en) Manufacture of magnetic recording media
KR960025385A (ko) 자기기록 매체의 제조 방법
KR960025386A (ko) 자기기록 매체의 제조 방법
DE2119569C (de) Verfahren zur Herstellung von Magneto grammtragern
Chagnon et al. Phospholipids as surfactants in magnetic recording media
JPS5868906A (ja) 磁性流体
JPS5661036A (en) Magnetic recording medium
KR960025383A (ko) 자기기록 매체의 제조 방법
KR950020446A (ko) 자기기록 매체의 제조 방법

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee