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Interlayer Slip Test

IP.com Disclosure Number: IPCOM000044008D
Original Publication Date: 1984-Oct-01
Included in the Prior Art Database: 2005-Feb-05

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Graham, SM Henderson, IE Winarski, DJ [+details]


In reel-to-reel tape drives it is necessary to detect and eliminate any potential interlayer slip in a mounted tape reel. U.S. Patent 4,389,600 discusses this problem and provides one solution to it. It is often desirable to obtain a direct measurement of tape lineal speed rather than obtain that data indirectly from the rotational speed of the tape reels. In such a drive a velocity measurement tachometer is often provided in the tape path. The tachometer in the tape path can be used to detect interlayer slip during the acceleration of the tape. The interlayer slip test can be performed anywhere along the length of tape and places no stress on the tape beyond that which is normally applied whenever the tape is accelerated from a start/stop position to its normal operating speed.