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Magnetic tape

a magnetic tape and tape body technology, applied in the field of magnetic tapes, to achieve the effect of improving adhesion to other layers, high recording capacity, and easy adhesion

Inactive Publication Date: 2003-10-16
QUANTUM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004] Accordingly, an object of the present invention is to provide a magnetic tape which furnishes information for servo tracking without lessening the data recording area.

Problems solved by technology

This disadvantage is conspicuous in the servo tracking system of Japanese Patent Publn.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example i-2

[0163] A magnetic tape was obtained in the same manner as in Example I-1, except for changing the amounts of ITO and the coloring matter in the color-containing coating composition to 70 parts and 0.6 part, respectively, and adding 30 parts of spherical magnetite particles having an average particle size of 80 nm to the color-containing coating composition. A color-changed pattern was formed on the color-containing layer in the same manner as in Example I-1.

example i-3

[0164] A magnetic tape was obtained in the same manner as in Example I-1, except that the silicone particles were not used in the color-containing layer. A color-changed pattern was formed on the color-containing layer in the same manner as in Example I-1.

example i-4

[0165] A magnetic tape was obtained in the same manner as in Example I-1, except that the coloring matter used in the color-containing coating composition was replaced with Crystal Violet. A color-changed pattern was formed on the color-containing layer in the same manner as in Example I-1.

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Abstract

A magnetic tape comprising a substrate having on one side thereof a magnetic layer serving as a recording surface and on the other side thereof a resin layer serving as a non-recording surface, wherein said magnetic tape has a region on the side of the non-recording surface along the longitudinal direction of the tape in which a regular pattern for servo tracking having different optical properties from the other major region of the side of the non-recording surface is to be formed, and said magnetic tape has a thickness of 7 mum or less.

Description

[0001] The present invention relates to magnetic tape capable of optically recording servo signals for tracking. More particularly, it relates to magnetic tape capable of optically recording servo signals for tracking on the side opposite to the magnetic recording side.[0002] General magnetic tape has a low recording density because of its low track density. Serpentine type magnetic tape particularly has a low recording density. On the other hand, helical scan type magnetic tape, which uses a servo tracking system called automatic track finding (ATF), possesses a higher track density than the serpentine type magnetic tape.[0003] Servo tracking systems proposed for serpentine type magnetic tape include an embedded servo system, in which servo signals are written on the same track as the data track on the magnetic recording surface, and a system in which a track exclusive to servo signals is provided on the magnetic recording surface. Japanese Patent Publication No. 82626 / 95 discloses...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G11B5/58G11B5/584G11B5/78
CPCG11B5/58G11B5/78G11B5/584
Inventor ISHIKAWA, AKIRAISHII, TAKASHIKATASHIMA, MITSUHIROHOSHI, MASATOYAMASHIRO, TAKAHISAOKUDA, SHINSUKEUCHIDA, KOJISALIBA, GEORGE A.MALLICK, SATYAKIM, CHANTURGEON, CAROLCAPPABIANCA, LEOCRONIS, LEWIS
Owner QUANTUM CORP