FR1530888A - Magnetic tapes with a coating layer containing silica - Google Patents

Magnetic tapes with a coating layer containing silica

Info

Publication number
FR1530888A
FR1530888A FR113648A FR113648A FR1530888A FR 1530888 A FR1530888 A FR 1530888A FR 113648 A FR113648 A FR 113648A FR 113648 A FR113648 A FR 113648A FR 1530888 A FR1530888 A FR 1530888A
Authority
FR
France
Prior art keywords
coating layer
layer containing
magnetic tapes
containing silica
silica
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
FR113648A
Other languages
French (fr)
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to FR113648A priority Critical patent/FR1530888A/en
Application granted granted Critical
Publication of FR1530888A publication Critical patent/FR1530888A/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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/735—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer
    • G11B5/7356—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2
FR113648A 1966-07-08 1967-07-07 Magnetic tapes with a coating layer containing silica Expired FR1530888A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR113648A FR1530888A (en) 1966-07-08 1967-07-07 Magnetic tapes with a coating layer containing silica

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56390966A 1966-07-08 1966-07-08
FR113648A FR1530888A (en) 1966-07-08 1967-07-07 Magnetic tapes with a coating layer containing silica

Publications (1)

Publication Number Publication Date
FR1530888A true FR1530888A (en) 1968-06-28

Family

ID=26177953

Family Applications (1)

Application Number Title Priority Date Filing Date
FR113648A Expired FR1530888A (en) 1966-07-08 1967-07-07 Magnetic tapes with a coating layer containing silica

Country Status (1)

Country Link
FR (1) FR1530888A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2304980A1 (en) * 1975-03-21 1976-10-15 Basf Ag MAGNETIC TAPE RECORDING SUPPORT WITH IMPROVED FRICTION CHARACTERISTICS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2304980A1 (en) * 1975-03-21 1976-10-15 Basf Ag MAGNETIC TAPE RECORDING SUPPORT WITH IMPROVED FRICTION CHARACTERISTICS

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