JPS5448214A - Tape cassette - Google Patents
Tape cassetteInfo
- 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
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
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)
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 |
-
1977
- 1977-09-22 JP JP11430577A patent/JPS5448214A/en active Pending
Cited By (1)
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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