Title:
磁気テープ装置およびヘッドトラッキングサーボ方法
Document Type and Number:
Japanese Patent JP6615814
Kind Code:
B2
Abstract:
The magnetic tape device includes a TMR head (servo head); and a magnetic tape including a magnetic layer including ferromagnetic hexagonal ferrite powder, a binding agent, and fatty acid ester, in which an XRD intensity ratio obtained by an X-ray diffraction analysis of the magnetic layer by using an In-Plane method is 0.5 to 4.0, a vertical direction squareness ratio is 0.65 to 1.00, Ra measured regarding a surface of the magnetic layer is equal to or smaller than 2.0 nm, full widths at half maximum of spacing distribution measured by optical interferometry regarding a surface of the magnetic layer before and after performing a vacuum heating with respect to the magnetic tape are greater than 0 nm and equal to or smaller than 7.0 nm, and a difference between spacings before and after the vacuum heating is greater than 0 nm and equal to or smaller than 8.0 nm.
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Inventors:
Eki Ozawa
Kasada Adult
Kasada Adult
Application Number:
JP2017065484A
Publication Date:
December 04, 2019
Filing Date:
March 29, 2017
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G11B5/70; G11B5/584; G11B5/706; G11B5/71; G11B5/738; G11B5/78
Domestic Patent References:
| JP2016177851A | ||||
| JP2012043495A | ||||
| JP2008047276A |
Attorney, Agent or Firm:
Patent Service Corporation Patent Office Sykes