A cartridge is provided and includes tape-shaped magnetic recording medium; and cartridge memory; wherein cartridge memory includes communication unit that communicates with recording/reproducing device in state where cartridge is loaded on recording/reproducing device; storage unit; and control unit that stores, reads, and transmits information, wherein information includes manufacturing information of cartridge and adjustment information for adjusting a tension applied to the tape-shaped magnetic recording medium in a longitudinal direction of tape-shaped magnetic recording medium thereof, tape-shaped magnetic recording medium has a plurality of servo bands, and wherein a temperature expansion coefficient α of the tape-shaped magnetic recording medium satisfies 6 ppm/° C.≤α≤8 ppm/° C.

A magnetic recording medium is a tape-shaped magnetic recording medium, including: a substrate; an underlayer provided on the substrate; and a magnetic layer provided on the underlayer. The substrate contains polyester, each of the underlayer and the magnetic layer contains a lubricant, the magnetic layer has a surface on which a large number of holes is provided, the arithmetic average roughness Ra of the surface is 2.5 nm or less, a BET specific surface area of the entire magnetic recording medium measured in a state where the magnetic recording medium has been washed and dried is 3.5 m.sup.2/g or more and 7.0 m.sup.2/g or less, a squareness ratio of the magnetic layer in a vertical direction is 65% or more, an average thickness of the magnetic layer is 80 nm or less, an average thickness of the magnetic recording medium is 5.6 μm or less, and a servo pattern is recorded on the magnetic layer and a statistical value δ.sub.SW indicating a non-linearity of the servo pattern is 24 nm or less.

Provided are a magnetic tape control system that executes pre-rewinding storage of storing a magnetic tape in a state of being wound around a reel, and post-rewinding storage of storing the magnetic tape in a state of being rewound around a reel different from or the same reel as the reel after the pre-rewinding storage such that an end that is a tape outside end during the pre-rewinding storage is turned into a tape inside end and an end that is a tape inside end during the pre-rewinding storage is turned into a tape outside end, and a magnetic tape control device including a rewinding control unit that transmits rewinding execution information, and a drive unit that receives the rewinding execution information and starts running of a magnetic tape stored in a state of being wound around a reel to execute rewinding of the magnetic tape.

An integrated reel hub and motor shaft assembly for a tape drive that limits axial and radial run-out of tape (e.g., magnetic, optical) relative to a read/write head assembly and the various errors (e.g., loading, tension, reading, writing, and the like) associated therewith. In one arrangement, a reel hub of a reel assembly is directly molded (e.g., via an injection molding process) onto and around an end of a drive or motor shaft of a drive assembly. As a result, a more consistent head to tape interface, greater tape tracking performance, increased track density, and the like may be achieved.

An integrated reel hub and motor shaft assembly for a tape drive that limits axial and radial run-out of tape (e.g., magnetic, optical) relative to a read/write head assembly and the various errors (e.g., loading, tension, reading, writing, and the like) associated therewith. In one arrangement, a reel hub of a reel assembly is directly molded (e.g., via an injection molding process) onto and around an end of a drive or motor shaft of a drive assembly. As a result, a more consistent head to tape interface, greater tape tracking performance, increased track density, and the like may be achieved.

Various embodiments relate to apparatuses and methods for loading and unloading a tape storage medium. In one embodiment, an apparatus for such purpose includes a mechanized take-up reel. The mechanized take-up reel includes an inner hub, an outer hub being selectively nonrotatably coupleable with the inner hub (where at least one of the hubs is coupled to a rotating mechanism), a tongue coupled to the inner hub, and a slot in the outer hub for permitting the tongue to extend beyond a periphery of a tape engaging surface of the outer hub upon relative rotation between the inner and outer hubs.

Various embodiments relate to apparatuses and methods for loading and unloading a tape storage medium. In one embodiment, an apparatus for such purpose includes a mechanized take-up reel. The mechanized take-up reel includes an inner hub, an outer hub being selectively nonrotatably coupleable with the inner hub (where at least one of the hubs is coupled to a rotating mechanism), a tongue coupled to the inner hub, and a slot in the outer hub for permitting the tongue to extend beyond a periphery of a tape engaging surface of the outer hub upon relative rotation between the inner and outer hubs.

The present invention provides a winding core which is lightweight, and which has an excellent dimensional accuracy and deflection reducing property in a long length product. Provided is a winding core obtained by molding a resin composition comprising: at least one type of amorphous resin (A) selected from a styrene resin, a polycarbonate, a polyarylate, a polyphenylene oxide and a polysulfone; a polylactic acid (B); and an inorganic filler; wherein the resin composition includes: from 50 to 80 parts by mass of the amorphous resin (A), and from 20 to 50 parts by mass of the polylactic acid resin (B) (wherein the total amount of the amorphous resin (A) and the polylactic acid (B) is 100 parts by mass). Preferably, the winding core further includes from 10 to 40 parts by mass of the inorganic filler (C).

A cartridge is provided and includes tape-shaped magnetic recording medium; and cartridge memory; wherein cartridge memory includes communication unit that communicates with recording/reproducing device in state where cartridge is loaded on recording/reproducing device; storage unit; and control unit that stores, reads, and transmits information, wherein information includes manufacturing information of cartridge and adjustment information for adjusting a tension applied to the tape-shaped magnetic recording medium in a longitudinal direction of tape-shaped magnetic recording medium thereof, tape-shaped magnetic recording medium has a plurality of servo bands, and wherein a temperature expansion coefficient α of the tape-shaped magnetic recording medium satisfies 6 ppm/° C.≤α≤8 ppm/° C.

A magnetic recording medium is a tape-shaped magnetic recording medium, including: a substrate; an underlayer provided on the substrate; and a magnetic layer provided on the underlayer. The substrate contains polyester, each of the underlayer and the magnetic layer contains a lubricant, the magnetic layer has a surface on which a large number of holes is provided, the arithmetic average roughness Ra of the surface is 2.5 nm or less, a BET specific surface area of the entire magnetic recording medium measured in a state where the magnetic recording medium has been washed and dried is 3.5 m.sup.2/g or more and 7.0 m.sup.2/g or less, a squareness ratio of the magnetic layer in a vertical direction is 65% or more, an average thickness of the magnetic layer is 80 nm or less, an average thickness of the magnetic recording medium is 5.6 μm or less, and a servo pattern is recorded on the magnetic layer and a statistical value δ.sub.SW indicating a non-linearity of the servo pattern is 24 nm or less.