Browse Prior Art Database

Dual Sided Magnetic Recording

IP.com Disclosure Number: IPCOM000078996D
Original Publication Date: 1973-Apr-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Zentgraf, HJ: AUTHOR

Abstract

Increased volumetric efficiency for storing data signals is attained by using double-sided tape, i.e., tape with an oxide layer on each side. On the first side, the tracks are angled with respect to the edges as shown by the solid lines. On the opposite or second side, the tracks are angled with complementary angles such that the tracks cross for minimizing signal interference. When using double-sided tape, two read/write or transducing stations are employed such that signals may be exchanged with both sides of the tape during one pass, for enhancing data throughput rates. A plurality of guides ensure that the tape maintains its proper registration between the two read/ write stations 10 and 11. Station 10 includes a head which scans the first side for reading and writing on the first side angled tracks.

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Dual Sided Magnetic Recording

Increased volumetric efficiency for storing data signals is attained by using double-sided tape, i.e., tape with an oxide layer on each side. On the first side, the tracks are angled with respect to the edges as shown by the solid lines. On the opposite or second side, the tracks are angled with complementary angles such that the tracks cross for minimizing signal interference. When using double- sided tape, two read/write or transducing stations are employed such that signals may be exchanged with both sides of the tape during one pass, for enhancing data throughput rates. A plurality of guides ensure that the tape maintains its proper registration between the two read/ write stations 10 and 11. Station 10 includes a head which scans the first side for reading and writing on the first side angled tracks.

A media buffer may be interposed between stations 10 and 11. For minimum volumetric requirements for two transducing stations, the angles of rotation of the heads should be at right angles, as shown. The media, after it is transferred through the buffer, has a slight twist for exposing the second side of the tape to the transducer in station 11. It is also seen that by providing additional turns in the tape path between stations 10 and 11, the stations could be coaxial or have any other geometric relationship.

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