Title:
MAGNETIC TAPE AND MAGNETIC TAPE ENCASING BODY
Document Type and Number:
WIPO Patent Application WO/2023/100869
Kind Code:
A1
Abstract:
The present invention provides a magnetic tape having a non-magnetic support and a magnetic layer containing ferromagnetic powder. The amount of dimensional change Δw in the width direction in relation to a tension change in the longitudinal direction is between 400 ppm/N and 900 ppm/N (both inclusive), the non-magnetic support is a polyethylene naphthalate support with the Young's modulus in the width direction being 10000 MPa or more, the magnetic layer includes a plurality of servo bands, and a variation coefficient CV calculated from equation A: CV = (σG/Δw) × 100 is 10% or less, where σG represents a standard deviation of servo band intervals as measured in an area extending over 100 meters in the longitudinal direction of the magnetic tape with a tension of 0.6 N applied thereon in the longitudinal direction.
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Inventors:
KASADA NORIHITO (JP)
Application Number:
PCT/JP2022/043983
Publication Date:
June 08, 2023
Filing Date:
November 29, 2022
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G11B5/39; G11B5/70; G11B5/584; G11B5/73; G11B5/735; G11B5/738; G11B5/78; G11B15/43; G11B23/107
Domestic Patent References:
| WO2019171665A1 | 2019-09-12 |
Foreign References:
| JP2021125279A | 2021-08-30 | |||
| JP2021108236A | 2021-07-29 | |||
| JP2019021363A | 2019-02-07 | |||
| JP2021125273A | 2021-08-30 | |||
| JPS5523584U | 1980-02-15 |
Attorney, Agent or Firm:
SIKS & CO. (JP)
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