Browse Prior Art Database

Idler-less Reel-to-Reel Tape Drive

IP.com Disclosure Number: IPCOM000015661D
Original Publication Date: 2002-Feb-27
Included in the Prior Art Database: 2003-Jun-20
Document File: 3 page(s) / 71K

Publishing Venue

IBM

Abstract

Our invention eliminates the need for tape-guiding idlers and tape-guiding air-bearings in a tape path. Previous tape paths had to have idlers and/or air-bearings on each side of the I/O transducer to present the proper angle of wrap of the tape across the I/O transducer, as the radii of the tape reels changed due to the shifting of tape from one reel to the other. It should be noted that another name for the I/O transducer is a tape head. The I/O transducer is typically a magnetic transducer. However, I/O transducer could be an optical transducer designed for data communication with optical tape.

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Idler-less Reel-to-Reel Tape Drive

   Our invention eliminates the need for tape-guiding idlers and tape-guiding air-bearings in a tape path. Previous tape paths had to have idlers and/or air-bearings on each side of the I/O transducer to present the proper angle of wrap of the tape across the I/O transducer, as the radii of the tape reels changed due to the shifting of tape from one reel to the other. It should be noted that another name for the I/O transducer is a tape head. The I/O transducer is typically a magnetic transducer. However, I/O transducer could be an optical transducer designed for data communication with optical tape.

Our tape path is shown in Figure 1. Tape 20 is passed across I/O transducer 30 by the motion of tape reels 10 and 11. The tape path in Figure 1 is called reel-to-reel because there are no vacuum columns. Also, the tape path in Figure 1 has no idlers or air-bearings. This requires that I/O transducer be articulated to translate in the X-Y plane and rotate about the Z axis to accommodate the changing reel radii of tape reels 10 and 11.

Y

20

30

11 X

Figure 1. Idler-less Reel-to-Reel Tape Path

There are two methods for the control of the motion of the I/O transducer. The first method is that the I/O transducer can be rotated about the Z-axis first and then penetrated by a translation motion into tape 20. This first method requires that the base stage for control of the I/O transducer is a rotary stage and the secondary stage, which is supported by the base stage, is a linear stage. The second method is that the I/O transducer is first penetrated into tape 20 along the Y-axis, as shown in Figures 1 and 2, and then rotated to the desired angle about the Z axis. This second method requires that the base stage for control of the I/O transducer is a linear stage and the secondary stage, which is supported by the base stage, is a rotary stage. In the de...