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Browse Prior Art Database

Constant Head Wrap Tape Drive

IP.com Disclosure Number: IPCOM000050188D
Original Publication Date: 1982-Sep-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 23K

Publishing Venue

IBM

Related People

Wenner, JW: AUTHOR

Abstract

The tape can produce a constant wrap around a magnetic head in a reel to reel magnetic tape transport by the use of a low-frequency pivoted support for the magnetic head. The tape is fed almost on a direct straight-line path from the file reel to the take-up reel. A single tape guide is required at the head in conjunction with the flanges of the file reel to guide the tape through the tape path.

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Constant Head Wrap Tape Drive

The tape can produce a constant wrap around a magnetic head in a reel to reel magnetic tape transport by the use of a low-frequency pivoted support for the magnetic head. The tape is fed almost on a direct straight-line path from the file reel to the take-up reel. A single tape guide is required at the head in conjunction with the flanges of the file reel to guide the tape through the tape path.

As shown in the figure, a web 1 of magnetic tape is shown being unreeled from a file reel 2 to a take-up reel 3 mounted in the tape transport. The file reel 2 is the supply of magnetic tape connected into the tape drive system. A magnetic head 4 is shown mounted to a support 5. The support 5 is mounted at a pivot point 6 half way between the center of rotation of the file reel 2 and the take-up reel 3 on a center line 7, described by the three points comprising the centers of rotation of reels 2 and 3 and the pivot point 6. A tape guide 8 holds the tape in position over the magnetic head 4.

The magnetic head 4 is low-frequency pivoted at point 6 to provide a constant symmetrical wrap angle with the tape 1. No special tape guides are required to account for a specific wrap angle with respect to the magnetic head. A constant distance is provided between the head and the radial tangential point at which the tape 1 meets the reels. The magnetic head 4 pivots as the radius of the reels change. The radial position of the magnetic head can be sensed...