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Air Bearing Tape Guide

IP.com Disclosure Number: IPCOM000044271D
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Wightman, WO: AUTHOR

Abstract

When winding high performance magnetic tape onto a cassette it is essential that the tape be both accurately guided onto the reel and not be damaged. Accurate guiding requires edge guides along the guide path of the tape, and when the tape contacts the guides, damage to the edges of the tape can occur. This problem can be overcome by providing air bearings in the tape path which direct the tape through a curved path so that the tape acquires lateral edge stiffness and thereby is not subject to edge damage. As shown in the figure, tape 5 is fed through a tape cutter 6 to air bearings 1, 2 and 7. Air bearing 1 is retractably mounted. A vacuum tape disposal tube 4 is located opposite air bearing 1 to remove any unwanted tape from the tape path.

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Air Bearing Tape Guide

When winding high performance magnetic tape onto a cassette it is essential that the tape be both accurately guided onto the reel and not be damaged. Accurate guiding requires edge guides along the guide path of the tape, and when the tape contacts the guides, damage to the edges of the tape can occur. This problem can be overcome by providing air bearings in the tape path which direct the tape through a curved path so that the tape acquires lateral edge stiffness and thereby is not subject to edge damage. As shown in the figure, tape 5 is fed through a tape cutter 6 to air bearings 1, 2 and 7. Air bearing 1 is retractably mounted. A vacuum tape disposal tube 4 is located opposite air bearing 1 to remove any unwanted tape from the tape path. When air bearing 1 is in the position shown, tape 5 forms a curved path which provides edge strength so that when the tape 5 contacts edge guide 3, it will not be damaged. Only one edge guide 3 is shown; however, a second edge guide would be provided adjacent the tape edge nearest the viewer. When bearing 1 is retracted, air bearings 2 and 7 remain and form an entry port for the tape 1 into tape disposal tube 4. Bearing 7 provides the greatest curve to tape 5 at the start of the wind of tape onto a reel, as shown at tape path 8. This point in the winding cycle requires the most guidance, and the larger curvature in the tape path at this part of the cycle prevents edge damage to the tape at this critical...