发明名称 |
Magnetic tape drives |
摘要 |
An automatically threading magnetic tape drive includes a small-flanged take-up reel and a removeable large-flanged supply reel whose diameter is greater than the center-to-center spacing of the reels. During threading, a hinged shutter is closed to provide an air-tight barrier between the reels, the supply reel lies in a region of relatively high air pressure H and the take-up reel lies in a region of relatively low air pressure L. An air-tight channel links the region H and L and tape is threaded through the channel by air flow. Tape is drawn towards the take-up hub by air flow along slots in one or both take-up flanges, and the hub surface is elastomer-coated. During normal running the shutter is opened and tape spooled on to the take-up reel may overlap the supply reel flanges.
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申请公布号 |
US4749146(A) |
申请公布日期 |
1988.06.07 |
申请号 |
US19860938453 |
申请日期 |
1986.12.05 |
申请人 |
THORN EMI DATATECH LIMITED |
发明人 |
BRIDGER, GRAHAM;HIGGINS, WARWICK A. |
分类号 |
G11B15/67;G11B23/50;(IPC1-7):G11B15/32;B65H18/10;B65H20/14 |
主分类号 |
G11B15/67 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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