Abstract: A tape drive includes a first tape head, a first actuator assembly, a second tape head, a second actuator assembly, and a controller. The first tape head includes two first servo elements that each read one of two servo tracks, and a first read/write element that one of reads data from and writes data to a first data track. The first tape head is positionable at a first base head rotation angle. The first actuator assembly selectively rotates the first tape head from the first base head rotation angle to a first adjusted head rotation angle. The second tape head includes two second servo elements that each read one of the two servo tracks, and a second read/write element that one of reads data from and writes data to the first data track. The second tape head is positionable at a second base head rotation angle. The second actuator assembly selectively rotates the second tape head from the second base head rotation angle to a second adjusted head rotation angle.

Abstract: A data storage device is disclosed comprising a base casting forming a housing, wherein components within the housing comprise a first disk, a first head, and a first printed circuit board (PCB) being curved to substantially follow an arc of a first part of a shroud that surrounds at least part of the first disk. The first PCB has mounted thereon a first integrated circuit comprising a first microprocessor configured to actuate the first head over the first disk in order to access the first disk.

Abstract: The waveform signal output device includes: a signal output unit that reads waveform data recorded in a memory and outputs a waveform signal for driving the solenoid valve according to a waveform renewal signal; a waveform generation unit that generates waveform data for driving the solenoid valve using vehicle driving information and requests renewal of a waveform by outputting the waveform data; a waveform distortion determination unit that compares a time point when the renewal of a waveform is requested and a preset communication prohibition section and determines a possibility of distortion of the waveform signal; and a driving command unit that renews waveform data of the memory using the waveform data generated by the waveform generation unit and outputs a waveform renewal signal if it is determined that there is no possibility of distortion.

Abstract: A tape head is provided for use with a tape drive that is configured to receive a length of tape. The tape head includes a head body including at least one head element for performing read and/or write operations on the tape, and a protective layer extending over at least a portion of the head body for inhibiting wear of the head body when the tape is moved with respect to the head body. Furthermore, the protective layer is made of titanium oxide, chromium oxide, zirconium oxide, aluminum oxide, or zinc oxide.

Abstract: Disclosed are a hinge unit which couples a first member and a second member, the hinge unit including: a conic shaft which is coupled to the first member, and comprises a hinge pivot, a conic unit of a truncated cone shape, the radius of which is extended in an end area of the hinge pivot, and a first rocking unit formed to an outer surface of the conic unit; and a conic sleeve which is coupled to the second member, and comprises a sleeve main body formed with a conic accommodating unit having a shape corresponding to the conic unit in an inner part of the conic accommodating unit, and a second rocking unit formed to an inner surface of the conic accommodating unit to be coupled with the first rocking unit.

Abstract: A head drum assembly for a tape recorder maintains a substantially constant preload and reduces manufacturing costs. The head drum assembly includes a shaft fixed to a center of a stationary drum, a rotary drum installed to an upper portion of the stationary drum to be rotated by the shaft and having a rotor, a stator installed to an upper portion of the rotary drum to face the rotor, a bearing interposed between the shaft and the rotary drum that rotatably supports the rotary drum, a spring resiliently supporting an inner race of the bearing, and a drum cover fixed with the stator and fixed to the shaft to apply a substantially constant pressure to the bearing and to substantially constantly maintain a spacing between the stator and the rotor.

Abstract: To lower the coefficient of static friction of the circumferential surface of the guide or drum constituting the magnetic tape apparatus. A flat portion is formed between peak portions. The peak portions and flat portion are formed so that the relationship: a?<a is satisfied, where “a” represents a distance between the ridges of the peak portions, i.e., pitch of the peak portions, and “a?” represents a bottom width of the peak portions. When this relationship is satisfied between the peak portions and the flat portion, the total area of the meniscuses formed between the magnetic tape and the peak portions can be reduced, thus making it possible to lower the coefficient of static friction.

Abstract: A magnetic head for a rotary head drum is disclosed which can suppress abrasion thereof while a sufficient contact thereof with a magnetic tape is secured. An upper side tape sliding surface and a lower side tape sliding surface are formed on a tape sliding surface at an end of a head chip on the opposite upper and lower sides of a central tape sliding surface, which has a magnetic gap thereon, with a pair of upper and lower grooves left therebetween. The upper side tape sliding surface which is brought into contact with a magnetic tape earlier than the central tape sliding surface is formed with an increased thickness while the lower side tape sliding surface which is brought into contact with the magnetic tape later than the central tape sliding surface is formed with a decreased thickness.

Abstract: According to a first aspect the present invention is related to a head drum arrangement allowing a much easier mounting of the rotary transformer. The head drum arrangement comprises a non-rotating lower drum and a rotating upper drum, which are connected by a shaft fixed in the lower drum. The upper drum is mounted on the shaft by a bearing and preferably by two ball bearings. A rotary transformer is arranged between the lower drum and the upper drum having a fixed stator and a rotor rotating jointly with the upper drum. The rotor is non-positively held in its position by the magnetic force of a permanent magnet accommodated in the upper drum.

Abstract: A data tape drive for recording information on the data tape of a tape cartridge has a transducer head with air bleed slots that define side walls, a tape guide, and a device for detecting damage to the transducer head and tape guide. The damage detection device has a conductor loop that is located along the outer edges of the air bleed slots and tape guide for detecting any brittle fracture damage that may be present. The conductor loop is a thin filament of wire that is preferably attached to the ends of the side walls. When the transducer head or tape guide experiences a fracture, such as a fracture in one of the side walls, the delicate filament breaks and forms an open circuit. The open circuit in the conductor loop is detected by the data tape drive so that remedial actions can be taken.

Abstract: A head drum device of the present invention prevents a magnetic tape (2) from clinging to the head drum device (3) due to electrostatic charge by using a carbon-containing synthetic resin as the material of an upper drum (33) in order to reduce the manufacturing cost for the upper drum. Also, setting the outside diameter of the upper drum (33) smaller than that of an intermediate drum (32) eliminates the need for a high-level of manufacturing precision in the manufacture of the upper drum (33). Thus, it is possible to reduce the manufacturing cost for the upper drum (33).

Abstract: A guide plate is provided along the respective outer periphery of rotary and fixed drums on the upstream side relative to an inlet portion where a magnetic tape starts making contact with a magnetic head on the rotary drum, an airflow attendant on the rotation of the rotary drum is stripped by a wedge-shaped edge on the guide plate and is released to the outer periphery side by a guide surface of the guide plate, and the airflow flowing in the axial direction into the space between the tape and the rotary drum is restrained by an extended portion of the guide plate. In a rotary head drum device for a magnetic recording/reproducing apparatus, formation of an excess air film near an inlet portion of the tape is restrained, and stable recording and reproducing can be achieved without raising the tape tension, thereby enhancing the life of the tape.

Abstract: A magnetic head for attachment to a drum includes two magnetic cores butted against each other, and a gap is formed therebetween. A glass is bonded to the upper butted portion. A winding is provided on the magnetic cores, and electromagnetic transformation is carried out. On the sliding face of the magnetic head, two grooves and are formed with the gap positioned therebetween at positions symmetrical with each other in a rotation direction of the drum to provide good contact between the magnetic head and a magnetic tape or other magnetic medium. A protective film is formed on the surface of the sliding face. The magnetic head generates a negative pressure by virtue of the grooves formed in the sliding face in the rotation direction of the drum, thereby improving contact between the magnetic head and the magnetic tape.

Abstract: A magnetic record/playback apparatus for continuously recording at least two tracks of data conforming to a digital recording format applied to a first magnetic tape having a first tape width onto one track formed on a second magnetic tape having a second tape width larger than the first tape width, and for reproducing the data from the second magnetic tape. This apparatus includes a fixed drum and a rotating drum adapted to be rotated relative to the fixed drum. The rotating drum has a record/playback head for recording and/or reproducing the data with respect to the second magnetic tape and an erase head for erasing the data recorded on the second magnetic tape. A plurality of grooves extending in a direction of rotation of the rotating drum are formed on the outer circumference of the rotating drum, and each of the grooves has a width of 0.21 mm±0.02 mm.

Abstract: A rotary head in which the tape running load is decreased by setting the tape path cylindrical surface of an upper drum (12) in a range of winding of a tape (31) at an inner side relative to the tape path cylindrical surface of a lower drum (11). Alternatively, the tape path cylindrical surface of an inner drum (13) in a range of winding of the tape (31) is positioned at an outer side relative to the tape path cylindrical surface of the upper or lower drum.