JPS5448214A - Tape cassette - Google Patents

Tape cassette

Info

Publication number
JPS5448214A
JPS5448214A JP11430577A JP11430577A JPS5448214A JP S5448214 A JPS5448214 A JP S5448214A JP 11430577 A JP11430577 A JP 11430577A JP 11430577 A JP11430577 A JP 11430577A JP S5448214 A JPS5448214 A JP S5448214A
Authority
JP
Japan
Prior art keywords
shield
corrosion resistance
tape cassette
plate
shield plate
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
JP11430577A
Other languages
Japanese (ja)
Inventor
Takeshi Hongo
Yoshinobu Saito
Tsunemi Takiguchi
Shuichi Kikuchi
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.)
Tohoku Tokushuko KK
Tohoku Steel Co Ltd
Sony Corp
Original Assignee
Tohoku Tokushuko KK
Tohoku Steel Co Ltd
Sony 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 Tohoku Tokushuko KK, Tohoku Steel Co Ltd, Sony Corp filed Critical Tohoku Tokushuko KK
Priority to JP11430577A priority Critical patent/JPS5448214A/en
Publication of JPS5448214A publication Critical patent/JPS5448214A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To solve the problems such as of corrosion resistance, workability, etc. and improve shield effect inexpensively by using a shield plate formed of a soft magnetic electromagnetic stainless steel alloy composed of Cr, Si, Mo, Ni, Cu, Fe of suitable ratios.
CONSTITUTION: The material composed of 18 of 20% of Cr, 1,0 to 4.0% Si, respectively 0.1 to 3.0% of Ni and Cu and the rest of Fe is melted, forged then hot and cold rolled, after which it is molded to a shield plate, which is then annealed. Thereby, the shield effect and corrosion resistance are improved and the shiled plate may be obtained without undergoing any corrosion prevention processes such as Ni plating and the like, hence the number of steps is saved
COPYRIGHT: (C)1979,JPO&Japio
JP11430577A 1977-09-22 1977-09-22 Tape cassette Pending JPS5448214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11430577A JPS5448214A (en) 1977-09-22 1977-09-22 Tape cassette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11430577A JPS5448214A (en) 1977-09-22 1977-09-22 Tape cassette

Publications (1)

Publication Number Publication Date
JPS5448214A true JPS5448214A (en) 1979-04-16

Family

ID=14634536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11430577A Pending JPS5448214A (en) 1977-09-22 1977-09-22 Tape cassette

Country Status (1)

Country Link
JP (1) JPS5448214A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5023739A (en) * 1988-02-15 1991-06-11 Matsushita Electric Industrial Co., Ltd. Tape cassette with a trapping layer having a corrosiveness which is equal to or higher than that of the magnetic recording layer on the tape

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5023739A (en) * 1988-02-15 1991-06-11 Matsushita Electric Industrial Co., Ltd. Tape cassette with a trapping layer having a corrosiveness which is equal to or higher than that of the magnetic recording layer on the tape

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