[go: up one dir, main page]

GB1195573A - Treating Magnetic Recording Material - Google Patents

Treating Magnetic Recording Material

Info

Publication number
GB1195573A
GB1195573A GB3390967A GB3390967A GB1195573A GB 1195573 A GB1195573 A GB 1195573A GB 3390967 A GB3390967 A GB 3390967A GB 3390967 A GB3390967 A GB 3390967A GB 1195573 A GB1195573 A GB 1195573A
Authority
GB
United Kingdom
Prior art keywords
rollers
magnetic recording
recording material
binder
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
GB3390967A
Inventor
William Joseph Staudenmayer
James Roger Olson
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1195573A publication Critical patent/GB1195573A/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
    • G11B5/702—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
    • G11B5/7023—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 containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins
    • 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

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

1,195,573. Magnetic structures. EASTMAN KODAK CO. 24 July, 1967 [28 July, 1966], No. 33909/67. Heading H1H. The surface of a magnetic recording material comprising a layer of a thermoplastic binder containing magnetic particles on a support is smoothed by heating the material above the softening point of the binder, passing it between the nip of at least one pair of adjustable calendering rollers, then passing it past a thicknesssensing unit, and continuously adjusting the pressure excited by the rollers in response to signals from the sensing unit so that the thickness of the layer is maintained constant. The material may be preheated by electric heaters, and/or hot rollers may be used. The temperature may be above 90‹ C. for a polyvinylbutyral binder, e.g. 110 or 135‹ C. The pressure may be 30 or 90 1b./inch, and may be adjusted by varying the distance between the rollers using an hydraulic piston. Several sets of rollers may be used, each at a different temperature.
GB3390967A 1966-07-28 1967-07-24 Treating Magnetic Recording Material Expired GB1195573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56849466A 1966-07-28 1966-07-28

Publications (1)

Publication Number Publication Date
GB1195573A true GB1195573A (en) 1970-06-17

Family

ID=24271536

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3390967A Expired GB1195573A (en) 1966-07-28 1967-07-24 Treating Magnetic Recording Material

Country Status (1)

Country Link
GB (1) GB1195573A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2914585A1 (en) * 1978-04-10 1979-10-18 Tdk Electronics Co Ltd METHOD OF SMOOTHING THE TWO MAGNETIC COATINGS OF A MAGNETIC RECORDING MEDIUM
JPS5593842U (en) * 1978-12-21 1980-06-28

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2914585A1 (en) * 1978-04-10 1979-10-18 Tdk Electronics Co Ltd METHOD OF SMOOTHING THE TWO MAGNETIC COATINGS OF A MAGNETIC RECORDING MEDIUM
JPS5593842U (en) * 1978-12-21 1980-06-28

Similar Documents

Publication Publication Date Title
GB979584A (en) Apparatus and method for calendering or sheeting deformable material
GB1487096A (en) Electrographic fixing device
ES423166A1 (en) Method of finishing coated paper
GB1253124A (en)
GB1479476A (en) Thermosensitive element for thermographic reproduction or record systems
GB1195573A (en) Treating Magnetic Recording Material
GB1327148A (en) Method and apparatus for controlling the electrostatic condition of moving sheet or web material
GB1309867A (en) Fusing device for electrophotography
JPS5492263A (en) Heat sensitive recording medium
GB1261247A (en) Apparatus and method for developing radiation-sensitive heat-developable film
GB1149265A (en) Methods and apparatus for fixing photoelectrophoretic images
GB1475161A (en) Powder-image fusing apparatus
FR1288265A (en) Method and device for finishing materials in strips, in particular paper, by hot pressing
GB1419972A (en) Method and apparatus for stretching plastic material
GB978207A (en) Perforating machine and method of perforating
GB1331621A (en) Photoelectrophoretic image density control
GB1238723A (en)
GB1304449A (en)
GB1339912A (en) Heat-shrinkable film and methods of effecting and controlling the shrinking thereof
SE389880B (en) IRON PRESSURE WITH AN ELECTRICALLY HEATABLE THERMOSTAT CONTROLLED HEATING PLATE
GB1420453A (en) Method of laminating together chipboard and facing materials
GB1035612A (en) Apparatus for developing photocopies by heat
SU606978A1 (en) Device for cementing web material to base
GB1331622A (en) Background reduction in photoelectrophoretic imaging
GB1030922A (en) A process and apparatus for impressing through heat treatment ornamental patterns and/or writing on sheets of thermoplastic material

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees