9results about "Linear tape open format" patented technology

The magnetic tape includes a non-magnetic support, and a magnetic layer containing a ferromagnetic powder. In a binarized image of a secondary electron image obtained by imaging a surface of the magnetic layer with a scanning electron microscope at an acceleration voltage of 5 kV, the number of bright regions having an equivalent circle diameter of 75 nm or more and less than 125 nm is 100 or more and 4000 or less, and standard deviation σ of the number of the bright regions in a width direction of the surface of the magnetic layer is 400 or less.

The magnetic recording medium contains one or more polymers selected from the group consisting of a polymer P and a polymer Q in a portion on the non-magnetic support on the magnetic layer side. R1 represents a monovalent aromatic group or a monovalent hydrocarbon group having 6 or more carbon atoms and L1 represents a single bond or a divalent group. R2 represents a monovalent polar group and L2 represents a single bond or a divalent group. R3 represents a monovalent aromatic group or a monovalent hydrocarbon group having 6 or more carbon atoms, L3 represents a single bond or a divalent group, and R11 represents an alkyl group. R4 represents a monovalent polar group, L4 represents a single bond or a divalent group and R12 represents an alkyl group.

A computer-implemented method, a computer program product, and a computer system for repositioning operation on a tape medium based on dataset information. A computer system obtains dataset information of a dataset on a tape medium in a sync operation, where the dataset information includes positions of data in the dataset. A computer system sends the dataset information of the dataset to a host. In response to starting a repositioning operation, a computer system receives from the host the dataset information of the dataset. A computer system reads the dataset information of the dataset. A computer system repositions to a target on the tape medium, based on the dataset information of the dataset, where a tape drive refers to the dataset information and moves to a position immediately before the target.

One approach to adaptive tape calibration criteria based on the number of write stalls includes determining a number of rewrite occurrences caused by write stalls for a particular tape drive type. In response to detecting a write stall during a write operation, a total number of write stalls is stored on the tape drive. A rewrite calibration threshold is determined. The rewrite calibration threshold includes a total number of write stalls on the tape drive and a calibration criterion value for the particular tape drive type. In response to the number of rewrite occurrences caused by write stalls exceeding the rewrite calibration threshold while writing the data set on the tape drive, a calibration of the tape drive is performed.

To provide a magnet tape which may contribute to operational stability improvement of a drive during recording and / or reproduction after prolonged storage.SOLUTION: A magnetic tape comprising a non-magnetic support body and a magnetic layer containing ferromagnetic powder, a magnetic tape cartridge comprising the magnetic tape, and a magnetic tape device are provided. In a binarized image of a secondary electronic image obtained by imaging a surface of the magnetic layer using a scanning electron microscope at an acceleration voltage of 5 kV, the number of bright regions with circle-equivalent diameters of 60 nm to less than 120 nm, is 8000 to 30000, inclusive. A standard deviation σ of the number of bright regions in a width direction of the surface of the magnetic layer is 2000 or less.SELECTED DRAWING: None

The present invention provides a magnetic recording medium that exhibits a low coefficient of friction after repeated use. [Solution] A magnetic recording medium having a non-magnetic support and a magnetic layer containing ferromagnetic powder contains one or more polymers selected from the group consisting of polymers containing at least one structural unit represented by formulas S-1 and S-2, and polymers containing at least one structural unit represented by a predetermined formula, in the portion of the non-magnetic support on the magnetic layer side. TIFF2026049820000016.tif60170

The magnetic tape includes a non-magnetic support, and a magnetic layer containing a ferromagnetic powder. In a binarized image of a secondary electron image obtained by imaging a surface of the magnetic layer with a scanning electron microscope at an acceleration voltage of 2 kV, the number of dark regions having an equivalent circle diameter of 75 nm or more and less than 125 nm is 20 or more and 1500 or less, and standard deviation σ of the number of the dark regions in a width direction of the surface of the magnetic layer is 400 or less.

Provided are a magnetic recording medium and a magnetic recording cartridge. An average thickness of the magnetic recording medium tT is tT≤5.3 μm, a ratio (A2 / A1) of an average creep slope A2 at a temperature of 32° C. and a humidity of 80% RH to an average creep slope A1 at a temperature of 32° C. and a humidity of 20% RH is 1.440 or less, and a ratio (Tan δ2 / Tan δ1) of an average Tan δ2 at a temperature of 32° C. and a humidity of 80% RH to an average Tan δ1 at a temperature of 32° C. and a humidity of 20% RH is less than 1.2100. The magnetic recording cartridge includes the magnetic recording medium, a memory and a case that accommodates the magnetic recording medium and the memory.

Provided are a magnetic recording medium and a magnetic recording cartridge. An average thickness of the magnetic recording medium tT is tT≤5.3 μm, a ratio (A2 / A1) of an average creep slope A2 at a temperature of 32° C. and a humidity of 80% RH to an average creep slope A1 at a temperature of 32° C. and a humidity of 20% RH is 1.440 or less, and a ratio (Tan δ2 / Tan δ1) of an average Tan δ2 at a temperature of 32° C. and a humidity of 80% RH to an average Tan δ1 at a temperature of 32° C. and a humidity of 20% RH is less than 1.2100. The magnetic recording cartridge includes the magnetic recording medium, a memory and a case that accommodates the magnetic recording medium and the memory.