发明公开
- 专利标题： Magnetic tape cartridge with file protect feature
- 专利标题（中）： 具有文件保护功能的磁带盒
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申请号： EP81102423.1申请日： 1981-03-31
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公开(公告)号： EP0040686A1公开(公告)日： 1981-12-02
- 发明人: Rinkleib, Helfried Otto
- 申请人： International Business Machines Corporation
- 申请人地址： Old Orchard Road Armonk, N.Y. 10504 US
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： Old Orchard Road Armonk, N.Y. 10504 US
- 代理机构： Lewis, Alan John
- 优先权： US153802 19800527
- 主分类号： G11B23/04
- IPC分类号： G11B23/04 ; G11B15/04 ; G11B15/06
摘要：
A magnetic tape cartridge (11) comprises a device (16) settable to prevent inadvertent recording and thus erasure on the tape. The device (16) comprises a shaft (21) carrying a control disc (18) intermediate its length. The disc 18 either masks a sensor (23) from a light source (22) or allows illumination of the sensor according to its angular setting. The unit (16) is rotatably mounted in a sleeve (12) formed integrally with a part (11) of the cartridge. The unit (16) has a screwdriver slot (17c) and an indicator (17b). The sensor (23) is connected in a read/ write control circuit.
公开/授权文献
- EP0040686B1 Magnetic tape cartridge with file protect feature 公开/授权日：1985-01-02
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