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Tape Path for Advanced Tape Drive

IP.com Disclosure Number: IPCOM000094037D
Original Publication Date: 1966-May-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Aweida, JI: AUTHOR

Abstract

The vacuum column arrangement minimizes the inertia of tape 10 accelerated or decelerated by capstan 13. The arrangement comprises a pair of small tapered vacuum columns 11 and 12 interleaved to comprise an N-shape. The openings of columns 11 and 12 are at the top of respective larger parallel-walled columns 14 and 15. Each column 11, 12, 14 and 15 has one or more openings at its bottom connected to a vacuum source in the conventional manner.

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Tape Path for Advanced Tape Drive

The vacuum column arrangement minimizes the inertia of tape 10 accelerated or decelerated by capstan 13. The arrangement comprises a pair of small tapered vacuum columns 11 and 12 interleaved to comprise an N-shape. The openings of columns 11 and 12 are at the top of respective larger parallel- walled columns 14 and 15. Each column 11, 12, 14 and 15 has one or more openings at its bottom connected to a vacuum source in the conventional manner.

During the forward direction of tape movement, the tape leaves supply reel 31, passes over bearing 22 into column 15, then passes over bearing 20 into tapered column 12. The tape exits from column 12 over bearing 18 and passes beneath read-write head assembly 17 around capstan 13. The latter can be a vacuum capstan drawing the tape into frictional engagement. The tape has an angle-of-wrap about capstan 13 of approximately 180 degrees to provide a substantial area of frictional engagement with capstan 13. The tape leaving capstan 13 enters tapered column 11 and exits from column 11 over bearing 19 into parallel-walled column 14. Then the tape exits from column 14 over bearing 23 to take-up reel 32. Opposite tape movement occurs during its backward direction. Capstan 13 always engages the tape. It is a Start-Stop-Reverse capstan with rotation in either direction for driving the tape in either direction at a high velocity.

Openings 26 and 27 in the longer parallel-walled vacuum columns 14 and...