Abstract: Provided is an optically recordable or reproducible tape recording medium including tracking pattern groups and non-tracking pattern areas. The tracking pattern groups are repeatedly provided along a longitudinal direction of the tape, and each of the groups includes a plurality of tracking patterns. The non-tracking pattern areas are respectively provided between the tracking patterns. In addition, the non-tracking pattern areas have different lengths along the longitudinal direction of the tape.

Abstract: Provided is a tape recording medium including: a base layer having a first surface and a second surface; a first recording layer disposed over the first surface of the base layer and capable of optically recording first data; an imprinted layer disposed between the base layer and the first recording layer; and a second recording layer. The second recording layer is disposed over the second surface of the base layer, contains a magnetic material, and has recorded second data different from the first data.

Abstract: Provided is a tape recording medium including: a base layer having a first surface and a second surface; a first recording layer disposed over the first surface of the base layer and capable of optically recording first data; an imprinted layer disposed between the base layer and the first recording layer; and a second recording layer. The second recording layer is disposed over the second surface of the base layer, contains a magnetic material, and has recorded second data different from the first data.

Abstract: Provided is an optically recordable or reproducible tape recording medium including tracking pattern groups and non-tracking pattern areas. The tracking pattern groups are repeatedly provided along a longitudinal direction of the tape, and each of the groups includes a plurality of tracking patterns. The non-tracking pattern areas are respectively provided between the tracking patterns. In addition, the non-tracking pattern areas have different lengths along the longitudinal direction of the tape.

Abstract: An information recording and reproduction device comprises an optical pickup that has an objective lens and records information to a tape-form medium or reproduces information from a tape-form medium using laser light; a tape threading component that allows the tape-form medium to be arranged opposite the objective lens; a controller that detects that the tape-form medium is a cleaning tape; a movement mechanism that operates so as to bring the tape-form medium and the objective lens into contact with each other, in response to the detection by the control unit; and a first drive mechanism that plays out the tape-form medium in a state in which the tape-form medium and the objective lens are in contact with each other. The information recording and reproduction device is capable of cleaning the optical pickup even with a tape-form medium.

Abstract: The data recording apparatus for recording data to a recording medium having one or more tracks arranged in parallel comprises a data recorder configured to record data to the one or more tracks, a memory configured to store data, and a controller configured to control the data recorder. The controller determines whether or not the one or more tracks include a data defective region in which the data has not been recorded properly, stores in the memory the data that has not been recorded properly, designates a position corresponding to the data defective region, which is in a track arranged in parallel to the data defective region, and reads from the memory the data that has not been recorded properly, and records that data to the position corresponding to the data defective region.

Abstract: An information recording and reproduction device comprises an optical pickup that has an objective lens and records information to a tape-form medium or reproduces information from a tape-form medium using laser light; a tape threading component that allows the tape-form medium to be arranged opposite the objective lens; a controller that detects that the tape-form medium is a cleaning tape; a movement mechanism that operates so as to bring the tape-form medium and the objective lens into contact with each other, in response to the detection by the control unit; and a first drive mechanism that plays out the tape-form medium in a state in which the tape-form medium and the objective lens are in contact with each other. The information recording and reproduction device is capable of cleaning the optical pickup even with a tape-form medium.

Abstract: There is provided a method of manufacturing a tape-like pattern medium, with which a tape-like pattern medium with improved mechanical strength is manufactured.

Abstract: The data recording apparatus for recording data to a recording medium having one or more tracks arranged in parallel comprises a data recorder configured to record data to the one or more tracks, a memory configured to store data, and a controller configured to control the data recorder. The controller determines whether or not the one or more tracks include a data defective region in which the data has not been recorded properly, stores in the memory the data that has not been recorded properly, designates a position corresponding to the data defective region, which is in a track arranged in parallel to the data defective region, and reads from the memory the data that has not been recorded properly, and records that data to the position corresponding to the data defective region.

Abstract: In a magnetic head, a multilayer film is disposed, the multilayer film including metal magnetic films and non-magnetic films that are alternately laminated, and a boundary between the multilayer film and a magnetic oxide substrate or a non-magnetic substrate on which the multilayer film is to be formed is parallel with a gap section at a surface of the magnetic head for sliding with respect to a magnetic recording medium. The metal magnetic films constituting the multilayer film have two or more types of thickness, or the metal magnetic films constituting the multilayer film have a uniform thickness, and the uniform thickness t satisfies t<v×cos?/fmax, where v denotes a relative speed of the head to the recording medium, fmax denotes an upper limit of frequencies to be used and ? denotes an azimuth angle. With this configuration, a magnetic head having a suppressed pseudo signal and reduced noise can be provided, and a magnetic recording/reproducing device incorporating this magnetic head can be provided.

Abstract: In a magnetic head, a multilayer film is disposed, the multilayer film including metal magnetic films and non-magnetic films that are alternately laminated, and a boundary between the multilayer film and a magnetic oxide substrate or a non-magnetic substrate on which the multilayer film is to be formed is parallel with a gap section at a surface of the magnetic head for sliding with respect to a magnetic recording medium. The metal magnetic films constituting the multilayer film have two or more types of thickness, or the metal magnetic films constituting the multilayer film have a uniform thickness, and the uniform thickness t satisfies t<v×cos ?/fmax, where v denotes a relative speed of the head to the recording medium, fmax denotes an upper limit of frequencies to be used and ? denotes an azimuth angle. With this configuration, a magnetic head having a suppressed pseudo signal and reduced noise can be provided, and a magnetic recording/reproducing device incorporating this magnetic head can be provided.

Abstract: A magnetic head that is less prone to wear and has a long still duration and a magnetic recording/reproducing apparatus including a high-speed rotary drum unit using the same are provided.

Abstract: A metal-in-gap type magnetic head apparatus in which a pair of magnetic core half bodies, comprising a metallic magnetic film containing Fe as a main component on at least one magnetic core half body, are joined. In the above mentioned structure, at least a part of the surface of a supporting base of the magnetic head comprises a material having a lower standard electrode potential than the metallic magnetic film and thereby the metallic magnetic film has a high saturation flux density. Moreover, a magnetic head apparatus and magnetic recording apparatus of the present invention can have a high reliability even in the strong corrosive environment.

Abstract: A ring-type magnetic head is of a structure in which a metallic magnetic film is sandwiched between two substrates, and the metallic magnetic film has a saturation magnetic field not less than 50 A/m in all directions parallel to a film plane thereof. Where the metallic magnetic film is a Co-containing magnetically soft film having a crystallization temperature Tx greater than the Curie temperature Tc, the metallic magnetic film is subjected to a first heat treatment at a temperature not less than Tc and a second heat treatment at a temperature Ta of Tc-180.degree. C..ltoreq.Ta.ltoreq.Tc-30.degree. C. in the absence of any applied magnetic field. Where the metallic magnetic film is a Co-containing magnetically soft film having a crystallization temperature Tx less than the Curie temperature Tc, the metallic magnetic film is subjected to a first heat treatment at a temperature not greater than Tx while a rotating magnetic field is being applied thereto and a second heat treatment at a temperature Ta of Tx-200.

Abstract: A ring-type magnetic head is of a structure in which a metallic magnetic film is sandwiched between two substrates, and the metallic magnetic film has a saturation magnetic field not less than 50 A/m in all directions parallel to a film plane thereof; the direction of lamination of the sandwich is generally perpendicular to a gap-forming surface of the head; where the metallic magnetic film is a Co-containing magnetically soft film having a crystallization temperature Tx greater than the Curie temperature Tc, the metallic magnetic film is subjected to a first heat treatment at a temperature not less than Tc and a second heat treatment at a temperature Ta of Tc-180.degree. C..ltoreq.Ta.ltoreq.Tc-30.degree. C.