Title:
MAGNETIC TAPE CARTRIDGE, AND MAGNETIC RECORDING/PLAYBACK DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/100872
Kind Code:
A1
Abstract:
Provided are: a magnetic tape cartridge in which a magnetic tape is accommodated; and a magnetic recording/playback device including the magnetic tape cartridge. The magnetic tape includes a polyethylene naphthalate support having a Young's modulus in the width direction of 10,000 MPa or more. A medium life of the magnetic tape calculated using a linear function of logarithm logeT of A and T is 3 years or more, which is derived from a value of A and a value of logarithm logeT of T which are respectively obtained when A is the maximum value of the absolute value of the difference between the servo band interval obtained before storage under an environment of 32 °C and a relative humidity of 80% and the servo band interval obtained after storage for the storage time T under said environment, and T is 24 hours, 48 hours, 72 hours, 96 hours, or 120 hours.
Inventors:
KASADA NORIHITO (JP)
Application Number:
PCT/JP2022/043986
Publication Date:
June 08, 2023
Filing Date:
November 29, 2022
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G11B5/70; G11B5/008; G11B5/584; G11B5/73; G11B5/735; G11B5/738; G11B5/78; G11B5/84; G11B15/093; G11B15/43; G11B21/10; G11B23/107
Foreign References:
| JP2021125273A | 2021-08-30 | |||
| JP2003323713A | 2003-11-14 | |||
| JPH10143845A | 1998-05-29 | |||
| US7711995B1 | 2010-05-04 |
Attorney, Agent or Firm:
SIKS & CO. (JP)
Download PDF:
Previous Patent: MAGNETIC TAPE CONTAINER
Next Patent: MAGNETIC TAPE CARTRIDGE AND MAGNETIC RECORDING PLAYBACK DEVICE
Next Patent: MAGNETIC TAPE CARTRIDGE AND MAGNETIC RECORDING PLAYBACK DEVICE