RECORDING DEVICE, READING DEVICE, RECORDING METHOD, RECORDING PROGRAM, READING METHOD, READING PROGRAM, AND MAGNETIC TAPE

    公开(公告)号:US20210383826A1

    公开(公告)日:2021-12-09

    申请号:US17393404

    申请日:2021-08-04

    Abstract: An information processing device includes a generation unit that generates a hierarchy of a group that classifies each piece of data from information about each of a plurality of pieces of data to be recorded, and a control unit that controls recording of the plurality of pieces of data included in a group of the hierarchy at a highest level on a magnetic recording medium in a recording order according to an order from an upper hierarchy to a lower hierarchy, for each group of the hierarchy at the highest level. The magnetic recording medium has a magnetic layer containing a ferromagnetic powder and a binding agent on a non-magnetic support. A difference between spacings S0.5 and S13.5 measured under pressures of 0.5 atm and 13.5 atm by an optical interference method after n-hexane cleaning on a surface of the magnetic layer is equal to or less than 3.0 nm.

    POLARIZING PLATE PROTECTIVE FILM, POLARIZING PLATE AND DISPLAY DEVICE

    公开(公告)号:US20160291211A1

    公开(公告)日:2016-10-06

    申请号:US15082730

    申请日:2016-03-28

    CPC classification number: G02B1/14 G02B5/3033

    Abstract: A polarizing plate protective film contains a compound represented by general formula (II-1) or (II-2). In general formulas (II-1) and (II-2), X represents a 6-membered cyclic acetal group; n represents an integer of 2 or more; and a plurality of Xs may be identical or different. In general formula (II-1), Z2 represents a linking group having a valence of n; R1 represents a substituent, when there are a plurality of R1s, at least two of the plurality of R1s may be taken together to form a ring, R1s in different benzene rings may be taken together to form a single bond; m represents an integer of 0-4; and the plurality of R1s may be identical or different. In general formula (II-2), Z3 represents an alkylene group having a valence of n, provided that Z3 does not have a ring structure.

    RECORDING DEVICE, READING DEVICE, RECORDING METHOD, RECORDING PROGRAM, READING METHOD, READING PROGRAM, AND MAGNETIC TAPE

    公开(公告)号:US20210366509A1

    公开(公告)日:2021-11-25

    申请号:US17393415

    申请日:2021-08-04

    Abstract: An information processing device includes a recording unit that records a plurality of objects including data and metadata related to the data on a magnetic recording medium, and executes, after recording at least one of the objects, processing of recording first set data which is a set of the metadata included in the object. The first set data is the set of the metadata included in the object recorded after recording the first set data that is recorded immediately before. The magnetic recording medium has a magnetic layer containing a ferromagnetic powder and a binding agent on a non-magnetic support. A difference between spacings S0.5 and S13.5 measured under pressures of 0.5 atm and 13.5 atm by an optical interference method after n-hexane cleaning on a surface of the magnetic layer is equal to or less than 3.0 nm.

    MAGNETIC TAPE, MAGNETIC TAPE CARTRIDGE, AND MAGNETIC TAPE APPARATUS

    公开(公告)号:US20210241792A1

    公开(公告)日:2021-08-05

    申请号:US17160535

    申请日:2021-01-28

    Abstract: The magnetic tape in which a difference (S0.1−S1.6) between a spacing S0.1 and a spacing S1.6 obtained after n-hexane cleaning on a surface of the magnetic layer is equal to or less than 32 nm. The S0.1 is a value obtained as a spacing under a pressing force of 0.1 atm from a relational expression between a pressure and a spacing obtained by performing a spacing measurement on the surface of the magnetic layer by an optical interference method under a pressing force of each of a plurality of different pressures after the n-hexane cleaning, and S1.6 is a spacing measured on the surface of the magnetic layer by the optical interference method under the pressing force of 1.6 atm after the n-hexane cleaning.

    MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING DEVICE

    公开(公告)号:US20200090694A1

    公开(公告)日:2020-03-19

    申请号:US16569103

    申请日:2019-09-12

    Abstract: The magnetic recording medium includes a non-magnetic support; and a magnetic layer including a ferromagnetic powder and a binding agent on the non-magnetic support, in which a difference (S0.5−S13.5) between a spacing S0.5 measured by optical interferometry regarding a surface of the magnetic layer under a pressing force of 0.5 atm after n-hexane cleaning and a spacing S13.5 measured by optical interferometry regarding the surface of the magnetic layer under a pressing force of 13.5 atm after n-hexane cleaning is equal to or smaller than 3.0 nm, and a magnetic recording and reproducing device including this magnetic recording medium.

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