JPS5597029A - Magnetic tape - Google Patents

Magnetic tape

Info

Publication number
JPS5597029A
JPS5597029A JP129579A JP129579A JPS5597029A JP S5597029 A JPS5597029 A JP S5597029A JP 129579 A JP129579 A JP 129579A JP 129579 A JP129579 A JP 129579A JP S5597029 A JPS5597029 A JP S5597029A
Authority
JP
Japan
Prior art keywords
magnetic tape
coercive force
featuring
erasion
ferromagnetic powder
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.)
Pending
Application number
JP129579A
Other languages
Japanese (ja)
Inventor
Kazumasa Fukuda
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP129579A priority Critical patent/JPS5597029A/en
Publication of JPS5597029A publication Critical patent/JPS5597029A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To secure the erasion effect of the desired standard by coating the ferromagnetic powder featuring the coercive force of less than the specific level onto the rear surface of the magnetic tape featuring the high coercive force.
CONSTITUTION: The ferromagnetic powder featuring the coercive force of 250Oe or less is coated as back-coat 3 onto the rear surface of base component 1 of the magnetic tape featuring the coercive force of over 700Oe at its main magnetic layer 2. With such magnetic tape, the erasion standard of about +55dB or more can be obtained via the erasion current of about 150W200mA which is allowable in the practical use. The ferromagnetic powder used as back-coat 3 uses γ-Fe2O3, ferrite or the like.
COPYRIGHT: (C)1980,JPO&Japio
JP129579A 1979-01-12 1979-01-12 Magnetic tape Pending JPS5597029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP129579A JPS5597029A (en) 1979-01-12 1979-01-12 Magnetic tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP129579A JPS5597029A (en) 1979-01-12 1979-01-12 Magnetic tape

Publications (1)

Publication Number Publication Date
JPS5597029A true JPS5597029A (en) 1980-07-23

Family

ID=11497466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP129579A Pending JPS5597029A (en) 1979-01-12 1979-01-12 Magnetic tape

Country Status (1)

Country Link
JP (1) JPS5597029A (en)

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