GB768990A - Improvements in or relating to magnetic recording tape - Google Patents

Improvements in or relating to magnetic recording tape

Info

Publication number
GB768990A
GB768990A GB13330/55A GB1333055A GB768990A GB 768990 A GB768990 A GB 768990A GB 13330/55 A GB13330/55 A GB 13330/55A GB 1333055 A GB1333055 A GB 1333055A GB 768990 A GB768990 A GB 768990A
Authority
GB
United Kingdom
Prior art keywords
thickness
tape
relating
magnetic recording
recording tape
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
GB13330/55A
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.)
Armour Research Foundation
Original Assignee
Armour Research Foundation
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 Armour Research Foundation filed Critical Armour Research Foundation
Publication of GB768990A publication Critical patent/GB768990A/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

Landscapes

  • Paints Or Removers (AREA)

Abstract

768,990. Magnetic records. ARMOUR RESEARCH FOUNDATION OF ILLINOIS INSTITUTE OF TECHNOLOGY. May 9, 1955 [May 11, 1954], No. 13330/55. Drawings to Specification. Class 40 (2). A magnetic record tape having a higher coercive force than that normally used, is enabled to produce optimum results in a machine having a fixed bias set for a record having a lower coercivity, by making the thickness of the magnetisable coating such that where in the existing machine HB 1 is the bias field intensity in the furthermost portion of a magnetizable layer of thickness t 1 and of coercive force HC 1 , and HC 2 and HB 2 are the different coercive and bias forces, respectively, in a tape having a thickness of magnetizable layer t 2 .
GB13330/55A 1954-05-11 1955-05-09 Improvements in or relating to magnetic recording tape Expired GB768990A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US768990XA 1954-05-11 1954-05-11

Publications (1)

Publication Number Publication Date
GB768990A true GB768990A (en) 1957-02-27

Family

ID=22134851

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13330/55A Expired GB768990A (en) 1954-05-11 1955-05-09 Improvements in or relating to magnetic recording tape

Country Status (1)

Country Link
GB (1) GB768990A (en)

Similar Documents

Publication Publication Date Title
GB987357A (en) Memory system employing a magnetic recording medium
GB774487A (en) Improvements in or relating to magnetic record member
GB671269A (en) Improvements in or relating to multi-layer magnetic record members
GB1356005A (en) Magnetic recording head
FR1103477A (en) Magnetic recording, reproducing and erasing heads
FR1227533A (en) Improvements in electromagnetic transducer heads and systems for recording and reproducing magnetically recorded electrical signals
GB1305148A (en)
GB768990A (en) Improvements in or relating to magnetic recording tape
GB1213169A (en) Improvements in or relating to methods of magnetic recording
GB851520A (en) Improvements in or relating to magnetic reading and recording
GB795617A (en) Improved magnetic tape recording and reproducing system and apparatus
JPS5354002A (en) Magnetic recording medium
GB504932A (en) Improvements relating to the magnetic recording or reproducing of sound
GB693346A (en) Improvements in or relating to magnetic recorder head assembly
GB783198A (en) Improvements in or relating to apparatus for the reproduction of multi-track magnetic records
GB691505A (en) Improvements in and relating to magnetic heads for magnetic recording and reproducing apparatus
JPS558640A (en) Magnetic recording and reproducing system
FR1121583A (en) Magnetic sound recording and reproducing head
GB775050A (en) Improvements in or relating to methods of recording signals
GB775642A (en) Improvements in or relating to a magazine unit for a recording and reproducing assembly
GB699700A (en) Vibration record carrier
US3083268A (en) Interchangeable magnetic record tape and method of making same
GB842850A (en) Writing and reading device, particularly for magnetic cards
GB635133A (en) Improved magnetic sound record carrier
GB760871A (en) An erasing head, with at least two gaps, for erasing magnetic sound records