GB922905A - Forming stripes of magnetic material - Google Patents

Forming stripes of magnetic material

Info

Publication number
GB922905A
GB922905A GB29096/59A GB2909659A GB922905A GB 922905 A GB922905 A GB 922905A GB 29096/59 A GB29096/59 A GB 29096/59A GB 2909659 A GB2909659 A GB 2909659A GB 922905 A GB922905 A GB 922905A
Authority
GB
United Kingdom
Prior art keywords
paper
cut
thickening agent
sheets
sodium
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
GB29096/59A
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.)
Unisys Corp
Original Assignee
Burroughs 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.)
Filing date
Publication date
Application filed by Burroughs Corp filed Critical Burroughs Corp
Publication of GB922905A publication Critical patent/GB922905A/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
    • G11B5/68—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
    • G11B5/716—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 two or more magnetic layers
    • 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
    • G11B5/702—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 the bonding agent
    • 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
    • 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
    • G11B5/855—Coating only part of a support with a magnetic layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils

Abstract

922,905. Magnetic coatings on paper. BURROUGHS CORPORATION. Aug. 25, 1959 [Dec. 2, 1958], No. 29096/59. Class 96. [Also in Groups XXXV and XXXVIII] A magnetic record comprises paper coated with an aqueous synthetic latex dispersion containing iron oxide, e.g. Fe 3 O 4 or Fe 2 SO 3 , particles and a thickening agent. The latex dispersion may be polystyrene-butadiene, polyvinyl acetate, polyvinylidene chloride, or an acrylic resin. The thickening agent may be an algin (e.g. sodium alginate), polyvinyl alcohol, or hydroxyethyl cellulose. Dispersing agents such as condensed napthalene sulphonate and sodium polyphosphate, and a preservative such as sodium benzoate may be included; casein, as a protective colloid may be included, as may pine oil, octyl alcohol and a silicone complex as anti-foaming agents. The dispersion is applied to the paper in stripes by means of an applicator roller 17 rotating oppositely to the direction of movement of the paper, dried in an oven 22, squeezed between rollers 32, 33 to reduce thickness trimmed and cut into sheets. The paper may be printed with conventional printing ink on both sides, perforated, corner-notched and cut to provide ledger sheets. Specification 922,906 is referred to.
GB29096/59A 1958-12-02 1959-08-25 Forming stripes of magnetic material Expired GB922905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US777722A US3023123A (en) 1958-12-02 1958-12-02 Forming stripes of magnetic material

Publications (1)

Publication Number Publication Date
GB922905A true GB922905A (en) 1963-04-03

Family

ID=25111054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29096/59A Expired GB922905A (en) 1958-12-02 1959-08-25 Forming stripes of magnetic material

Country Status (2)

Country Link
US (1) US3023123A (en)
GB (1) GB922905A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4404253A (en) 1979-04-11 1983-09-13 Agfa-Gevaert Aktiengesellschaft Magnetic recording medium
GB2215510A (en) * 1988-03-03 1989-09-20 Richard Maguire Redmond Magnetic tapes with automatic signal level variation

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299852A (en) * 1967-01-24 Sheet processing apparatus
US3194210A (en) * 1961-08-16 1965-07-13 Acrometal Products Inc Apparatus for coating wire with viscous material
US3177847A (en) * 1961-09-29 1965-04-13 Nat Steel Corp Apparatus for applying organic liquid coating to moving strip material
US3235427A (en) * 1961-10-27 1966-02-15 Harold E Koritz Process for magnetically attaching wall paper
US3329756A (en) * 1963-03-29 1967-07-04 Burroughs Corp Sheet processing method
GB1172233A (en) * 1966-05-25 1969-11-26 Formmaster Ltd Improvements in and relating to Stationery Assemblies
BE756149A (en) * 1969-09-15 1971-02-15 Ncr Co MAGNETIC RECORDING SUPPORT
US4044174A (en) * 1970-09-03 1977-08-23 Eastman Kodak Company Ultrasonically smoothing a magnetic layer on a web
JPS4946922B1 (en) * 1970-10-28 1974-12-12
JPS5274311A (en) * 1975-12-17 1977-06-22 Hitachi Maxell Magnetic recording media
US4176054A (en) * 1977-05-16 1979-11-27 Kelley Joseph A Waste paper recycling
JPS5485015A (en) * 1977-12-19 1979-07-06 Hitachi Maxell Method of fabricating magnetic record medium
DE3171194D1 (en) * 1980-04-17 1985-08-08 Minnesota Mining & Mfg Polyfunctional aziridine crosslinking agents for aqueous magnetic recording media binder
US4836378A (en) * 1987-11-18 1989-06-06 Philip Morris, Incorporated Package having magnetically coded tear tape or sealing strip
US6790378B2 (en) * 2001-10-05 2004-09-14 R. William Graham Coating composition having magnetic properties
FR2916676B1 (en) * 2007-06-01 2011-04-15 Goss Int Montataire Sa PRINTING MACHINE AND CORRESPONDING METHOD.
CN103282280B (en) 2010-10-27 2016-02-10 洲际大品牌有限责任公司 The accommodating packaging of the closeable product of magnetic

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1780793A (en) * 1926-11-06 1930-11-04 Mclaurin William Wallace Coated paper and process of manufacturing same
US1981956A (en) * 1932-09-19 1934-11-27 United Shoe Machinery Corp Latex applying top cementing machine
US2086117A (en) * 1935-12-24 1937-07-06 John Waldron Corp Coating casting machine
US2075620A (en) * 1936-01-02 1937-03-30 Container Corp Coating apparatus
US2476097A (en) * 1944-02-28 1949-07-12 Kagen Apparatus for applying stripes of adhesive material
US2633431A (en) * 1947-12-20 1953-03-31 Shellmar Products Corp Magnetic recording tape and method of making same
US2608127A (en) * 1948-05-20 1952-08-26 Robert H Redfield Protective coating for motionpicture films
US2628929A (en) * 1949-07-15 1953-02-17 Minnesota Mining & Mfg Method and apparatus for transferring a magnetic sound track to movie film
US2699408A (en) * 1950-03-24 1955-01-11 Armour Res Found Magnetic record member
US2748015A (en) * 1950-12-21 1956-05-29 Audio Devices Inc Production of magnetic sound tape
US2688567A (en) * 1952-01-17 1954-09-07 Ernest W Franck Method of smoothing the coated surfaces of magnetic tape
GB759486A (en) * 1953-01-29 1956-10-17 Thermionic Products Ltd Improvements in or relating to magnetic recording media
US2862845A (en) * 1954-10-25 1958-12-02 Clevite Corp Magnetizable bands

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4404253A (en) 1979-04-11 1983-09-13 Agfa-Gevaert Aktiengesellschaft Magnetic recording medium
GB2215510A (en) * 1988-03-03 1989-09-20 Richard Maguire Redmond Magnetic tapes with automatic signal level variation

Also Published As

Publication number Publication date
US3023123A (en) 1962-02-27

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