GB676768A - Paper medium for magnetic recording and reproducing - Google Patents

Paper medium for magnetic recording and reproducing

Info

Publication number
GB676768A
GB676768A GB18399/48A GB1839948A GB676768A GB 676768 A GB676768 A GB 676768A GB 18399/48 A GB18399/48 A GB 18399/48A GB 1839948 A GB1839948 A GB 1839948A GB 676768 A GB676768 A GB 676768A
Authority
GB
United Kingdom
Prior art keywords
paper
magnetic recording
magnetic
reproducing
july
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
GB18399/48A
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.)
Brush Development Co
Original Assignee
Brush Development 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 Brush Development Co filed Critical Brush Development Co
Publication of GB676768A publication Critical patent/GB676768A/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
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates

Landscapes

  • Paints Or Removers (AREA)

Abstract

676,768. Magnetic recording. BRUSH DEVELOPMENT CO. July 8, 1948 [July 21, 1947], No. 18399/48. Drawings to Specification. Class 38 (ii). [Also in Group VIII] Paper for transducing records by magnetic flux interlinkage has powdered magnetite, γ-ferric oxide, or oxides of cobalt or of ferromagnetic metals of particle size one micron or less incorporated therein so that the paper is incompletely penetrated by the magnetic powder and has a concentration of 8 to 25 per cent by volume near at least one surface. The paper is glazed or calendered &c. and may be used as a tape between magnetic polepieces. Specifications 647,962 and 676,761, [both in Group XXXVIII], are referred to.
GB18399/48A 1947-07-21 1948-07-08 Paper medium for magnetic recording and reproducing Expired GB676768A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US676768XA 1947-07-21 1947-07-21

Publications (1)

Publication Number Publication Date
GB676768A true GB676768A (en) 1952-08-06

Family

ID=22077623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18399/48A Expired GB676768A (en) 1947-07-21 1948-07-08 Paper medium for magnetic recording and reproducing

Country Status (1)

Country Link
GB (1) GB676768A (en)

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