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Title:
RECORDING DEVICE, READING DEVICE, RECORDING METHOD, RECORDING PROGRAM, READING METHOD, READING PROGRAM, AND MAGNETIC TAPE
Document Type and Number:
WIPO Patent Application WO/2020/183899
Kind Code:
A1
Abstract:
The information processing device comprises a recording unit recording onto a magnetic recording medium a plurality of objects containing data and metadata related to the data, and after recording at least one object, executing processing whereby first grouped data, which is a grouping of the metadata contained in each of the objects, is recorded. The first grouped data is a grouping of the metadata contained in objects recorded after a completed recording of an immediately preceding first grouped data. The magnetic recording medium has a magnetic layer including a ferromagnetic powder and a binder on a nonmagnetic support. Measured by optical interferometry on the magnetic layer surface after washing with n-hexane and under pressure forces of 0.5 atm and 13.5 atm, the difference between the spacings S0.5 and S13.5 is 3.0 nm or less.

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Inventors:
OZAWA EIKI (JP)
KONDO MICHITAKA (JP)
MIYAMOTO KENTARO (JP)
SANO NAOKI (JP)
Application Number:
PCT/JP2020/001096
Publication Date:
September 17, 2020
Filing Date:
January 15, 2020
Export Citation:
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Assignee:
FUJIFILM CORP (JP)
International Classes:
G11B5/70; G11B5/708; G11B5/71; G11B5/735; G11B5/738; G11B5/78; G11B20/12
Foreign References:
JP2018181396A2018-11-15
JP2015179560A2015-10-08
JP2015041389A2015-03-02
JP2006059494A2006-03-02
JPH1196690A1999-04-09
JP2011028826A2011-02-10
JP2017168178A2017-09-21
JP2016004413A2016-01-12
JP2011225417A2011-11-10
JP2011216149A2011-10-27
JP2012204726A2012-10-22
JP2015127985A2015-07-09
JP2005251351A2005-09-15
JP2011048878A2011-03-10
JP2010024113A2010-02-04
JP2016051493A2016-04-11
JP2013131285A2013-07-04
JP2012133837A2012-07-12
JP2006331625A2006-12-07
US7029774B12006-04-18
JPH01106338A1989-04-24
JPH01106338A1989-04-24
JPS6479274A1989-03-24
JPS6479274A1989-03-24
JP2010231843A2010-10-14
JP2004318983A2004-11-11
JP2012053940A2012-03-15
Other References:
J. JPN. SOC. POWDER METALLURGY, vol. 61, pages 280 - 284
J. MATER. CHEM. C, vol. 1, 2013
See also references of EP 3940700A4
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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