GB768990A - Improvements in or relating to magnetic recording tape - Google Patents
Improvements in or relating to magnetic recording tapeInfo
- 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
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 .
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) |
-
1955
- 1955-05-09 GB GB13330/55A patent/GB768990A/en not_active Expired
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