27results about "Record carrier guidance" patented technology

A plurality of servo patterns are recorded in a magnetic tape along a longitudinal direction. The servo pattern is at least one linear magnetization region pair. The linear magnetization region pair includes a first linear magnetization region, which is linearly magnetized, and a second linear magnetization region, which is linearly magnetized. The first linear magnetization region and the second linear magnetization region are inclined in opposite directions with respect to a first imaginary straight line along a width direction of the magnetic tape. The first linear magnetization region has a steeper inclined angle with respect to the first imaginary straight line than the second linear magnetization region.

The present disclosure generally relates to a captive tape drive comprising a tape head. The captive drive comprises an upper assembly, the upper assembly comprising a first tape, a first supply reel, a first take-up reel, and two or more rollers. The captive tape drive further comprises a lower assembly disposed below the upper assembly, the lower assembly comprising a second tape, a second supply reel, a second take-up reel, and two or more rollers. The tape head is disposed between the plurality of rollers, and is configured to move between the upper assembly and the lower assembly to access the first and second tapes. The tape head comprises one or more modules, each module comprising 64 writers and 64 readers. Each module is configured to write data to the first and second tapes using the 64 writers and to read verify the newly written data using the 64 readers.

Provided is a magnetic tape having a non-magnetic support and a magnetic layer containing a ferromagnetic powder, wherein the protrusion height Spk defined in ISO 25178 is 1.2 to 2.8 nm inclusive, said protrusion height Spk being measured in a measurement region of 5 × 5 μm on the surface of the magnetic layer after 500 cycles of back and forth sliding with respect to an LTO8 head at a head inclination angle of 15° at a temperature of 15°C and a relative humidity of 80%.

The invention relates to a magnetic card (2) reader (1), which comprises: - an electronic card (5) which is intended to receive and process data from a magnetic card; - a magnetic reading head (6) which is intended to read data contained in a magnetic card and to transmit these data to the electronic card; - a zone (7) for passing through a magnetic card, which comprises guide means (8) which are intended to guide the magnetic card as it slides in the passage zone. The reading head is mounted so that it is stationary on the magnetic card reader. The guide means comprise elastic deformation means (10) which are intended to deform the magnetic card when it slides in the passage zone so as to allow the magnetic card to be read. The elastic deformation means are made of a material having a Young's modulus greater than 100,000 MPa.

When servo heads in a head chip of a servo write head assembly record servo patterns onto a tape's servo tracks, the servo heads are continuously being rapidly worn away by the tape. This general wear affects the servo heads' ability to record the servo patterns, impairing accurate positioning of the tape heads in the drive. However, by implementing, on the leading edge of the head chip, a support block that has a wear resistant skiving edge and landing zone for the tape “crow bar,” which forms when the tape is running over the servo head, the general wear of the servo heads from the tape is mitigated. The skiving edge, which may be formed by thin film technology process steps, causes the tape to fly over the head chip in those regions. An additional support block may be implemented at the trailing edge of the head chip.

This technology provides the ability to adjust the tilt while suppressing changes in height. [Solution] The position adjustment mechanism according to this disclosure comprises a plate, a fastening screw, and four tilt adjustment screws. The fastening screw fastens the plate to a reel capable of winding magnetic tape, and the four tilt adjustment screws are arranged at 90-degree intervals around the rotation axis of the reel on a circle around the rotation axis of the reel, and the tilt of the reel is adjusted by the movement of the four tilt adjustment screws relative to the plate.

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 present disclosure generally relates to a head assembly in a data storage device. The data storage device may include magnetic media embedded in the device or magnetic media from an insertable cassette or cartridge (e.g., in an LTO drive), where the head assembly reads from and writes to the magnetic media. During device operation, the magnetic media moves across the head assembly. The magnetic media experiences higher contact stress at certain points or portions of the head assembly. A sensor guard is coupled to the head assembly. The sensor guard comprises at least one chamfered surface or at least one stepped surface to decrease the contact stress between the magnetic media and the head assembly during device operation. The at least one chamfered or stepped surface may be disposed on a leading edge of the sensor guard.

A magnetic card reader including an electronic card, a magnetic reading head which is intended to read data contained in a magnetic strip of a magnetic card and to transmit these data to the electronic card, and a zone for passage of a magnetic card, in which a magnetic card is intended to slide and which includes a guide member intended to guide the magnetic card as it slides in the passage zone. The magnetic reading head is fixedly mounted on the magnetic card reader. The guide member is integral with resilient deformation members which are intended to come into contact with the magnetic card so as to deform it when the magnetic card slides in the passage zone in order to allow the magnetic strip to be read by the magnetic reading head.

A magnetic card reader including an electronic card, a magnetic reading head which is intended to read data contained in a magnetic strip of a magnetic card and to transmit these data to the electronic card, and a zone for passage of a magnetic card, in which a magnetic card is intended to slide and which includes a guide member intended to guide the magnetic card as it slides in the passage zone. The magnetic reading head is fixedly mounted on the magnetic card reader. The guide member is integral with resilient deformation members which are intended to come into contact with the magnetic card so as to deform it when the magnetic card slides in the passage zone in order to allow the magnetic strip to be read by the magnetic reading head.

This application discloses a tape drive, a tape, and a storage system, and relates to a computer field. The tape drive includes a first take-up reel and a second take-up reel that are in a stacking layout and that rotate around respective rotation axes, where the first take-up reel and the second take-up reel wind a tape body, and the respective rotation axes coincide or do not coincide. When the first take-up reel and the second take-up reel rotate, the tape body is driven to be transported from the first take-up reel to the second take-up reel. A tape header and roller structures are disposed on a transport path of the tape body between the first take-up reel and the second take-up reel. The tape header performs a read operation or a write operation on the tape, and the roller structures support the tape body. The take-up reels are in the stacking layout, the take-up reels winding the tape body are stacked in a direction of the rotation axis, and the take-up reels are disposed in a vacant area in the tape drive, so that space utilization of the tape drive is improved. In comparison with a tape drive of a same space size, the tape drive provided in this application effectively improves storage capacity density of the tape drive, that is, improves a storage capacity of the tape drive.

The embodiments of the present application relate to the field of storage. Provided are a magnetic tape reel, a magnetic tape drive, a storage system and a write servo driving system, which are used for providing a servo pattern suitable for high-speed rotation of a magnetic tape. The servo pattern comprises a first servo stripe, a second servo stripe and a third servo stripe, wherein the first servo stripe is parallel to the third servo stripe, and the inclination angles of the servo stripes are small, so that the lateral dimension of the servo pattern can be reduced, and the frame rate of the magnetic tape drive can be increased, making the servo pattern suitable for a high-speed scenario. In addition, servo position information can be acquired simply by means of three servo stripes, the number of repetitions of servo stripes is small, multiple instances of servo peak detection are not required, and the calculation overhead is small, and the calculation speed is high, making the servo pattern suitable for fast calculation in the high-speed scenario. Moreover, the trajectory of the second servo stripe is a curve, the curve has different slopes at different positions, and the smaller the slope at a position, the higher the accuracy of position calculation. Therefore, a smaller number of stripes can be used to achieve the same or better accuracy as conventional servos, thereby ensuring the calculation accuracy.

The invention discloses a magnetic tape unit, a method and a storage system, and relates to the field of storage. The magnetic tape unit comprises a magnetic head group, the magnetic head group comprises a servo head, a read head and a write head, the servo head is used for executing read operation on a servo area of a tape body, the read head is used for executing read operation according to a data area indicated by servo information in the servo area, and the write head is used for executing write operation according to the data area indicated by the servo information in the servo area; the driving structure comprises one or more piezoelectric actuators, and the piezoelectric actuators move in any direction parallel to the surface of the belt body so as to drive the magnetic head group to move, so that the magnetic head group moves from the current position to the target position; the controller is used for controlling the driving structure to drive the magnetic head group to move. By rapidly adjusting the magnetic head group, the error between the current position of the servo head and the target position on the belt body in each moment is reduced, and high-precision servo control over the magnetic head group is achieved. As the control precision of the magnetic head group is improved, more data areas can be deployed on the belt body, and the storage capacity of the belt body is improved.

The embodiment of the invention provides a storage device, a tape memory and a storage system, and belongs to the technical field of storage, two sides of a magnetic head of the storage device are provided with cutting edges, the cutting edges can scrape air moving along with a data tape in a read-write state, a low-pressure area is formed between the data tape and the magnetic head to enable the data tape to be close to the magnetic head, and low flying height is achieved. And the read-write efficiency and the read-write precision are improved. The adjusting structures are arranged on the two sides of the magnetic head, each adjusting structure is provided with an arc-shaped face protruding towards the data band, when the data band moves, air is brought into the space between the data band and the adjusting structures to form a gas interval, gas in the gas interval generates a positive pressure effect to support the data band, and the envelope angle and acting force between the data band and the magnetic head are adjusted. The envelope angle and the acting force between the data tape and the magnetic head can be adjusted in a self-adaptive mode through the adjusting structure, it can be guaranteed that low flight height and high read-write efficiency and precision are achieved in the read-write state, the acting force between the data tape and the magnetic head can be reduced in the tape rewinding state, and abrasion between the data tape and the magnetic head is relieved.

A tape drive includes a first take-up reel and a second take-up reel that are in a stacking layout and that rotate around respective rotation axes, where the first take-up reel and the second take-up reel wind a tape body, and the respective rotation axes coincide or do not coincide. When the first take-up reel and the second take-up reel rotate, the tape body is driven to be transported from the first take-up reel to the second take-up reel. A tape header and roller structures are disposed on a transport path of the tape body between the first take-up reel and the second take-up reel. The tape header performs a read operation or a write operation on the tape, and the roller structures support the tape body.

The present disclosure generally relates to a head assembly in a data storage device. The data storage device may include magnetic media embedded in the device or magnetic media from an insertable cassette or cartridge (e.g., in an LTO drive), where the head assembly reads from and writes to the magnetic media. During device operation, the magnetic media moves across the head assembly. The magnetic media experiences higher contact stress at certain points or portions of the head assembly. A sensor guard is coupled to the head assembly. The sensor guard comprises at least one chamfered surface or at least one stepped surface to decrease the contact stress between the magnetic media and the head assembly during device operation. The at least one chamfered or stepped surface may be disposed on a leading edge of the sensor guard.

The embodiment of the invention provides a tape reel, a tape unit, a storage system and a write servo driving system, relates to the field of storage, and is used for providing a servo pattern suitable for high-speed rotation of a tape. Servo patterns in the magnetic tape unit comprise the first servo stripe, the second servo stripe and the third servo stripe, servo position information can be obtained through the three servo stripes, the number of times of repetition of the servo stripes is small, calculation overhead is small, the resolving speed is high, and the method is suitable for high-speed scenes. Besides, compared with the fact that the first servo stripe and the third servo stripe are not parallel, under the same detection precision and servo pattern width, the first servo stripe and the third servo stripe are arranged in parallel, the inclination angles of the servo stripes in the servo pattern are few, the transverse distance of the servo pattern can be reduced, the frame rate of the magnetic tape unit is improved, and the method is suitable for high-speed scenes.

To provide a magnetic tape which has no leader tape and is excellent in running stability.SOLUTION: Provided are a magnetic tape including a non-magnetic support and a magnetic layer including ferromagnetic powder, and a magnetic tape cartridge and a magnetic tape device including the magnetic tape. The magnetic tape is a data tape in which a leader pin is directly attached to an end portion, wherein in an end portion region of the surface of the magnetic layer on the leader pin attachment side, a frictional force F10 ° with respect to an LTO9 head measured at a head inclination angle of 10 ° is 4 gf to 15 gf, and the end portion region on the leader pin attachment side is a region within a range from a 5 cm position to a 20 cm position with an end of the end portion on the leader pin attachment side of the data tape as a start point 0 cm position in the longitudinal direction position.SELECTED DRAWING: None

On a magnetic tape, a plurality of servo patterns are recorded along a longitudinal direction. The servo pattern is at least one linear magnetized area pair. The linear magnetized area pair comprises a first linear magnetized area that is linearly magnetized and a second linear magnetized area that is linearly magnetized. The first linear magnetized area and the second linear magnetized area are inclined in mutually opposite directions with respect to a first virtual straight line along a width direction of the magnetic tape. The angle of inclination of the first linear magnetized area relative to the first virtual straight line is steeper than the angle of inclination of the second linear magnetized area.

The present application relates to a non-contact communication device, a magnetic tape drive, a non-contact communication system, a method of operating a non-contact communication device, and a storage medium. The non-contact communication device includes a processor and a transceiver. The transceiver induces power in a non-contact storage medium by applying a magnetic field to the non-contact storage medium mounted on a magnetic tape cassette, and performs transmission and reception of information with the non-contact storage medium through electromagnetic induction coupling. The non-contact storage medium has a measurement circuit that measures the power, and transmits power information related to the power measured by the measurement circuit to the non-contact communication device. The transceiver receives the power information, and the processor performs support processing for supporting the transmission and reception based on the power information received by the transceiver.

A tape guide roller having a magnet and a bushing for stabilizing a roller barrel for a tape medium and a tape drive having the guide roller are provided. The tape guide roller has a roller barrel extending about a vertical axis. The tape medium passes across the roller barrel for guiding the tape medium along a tape path. A plurality of magnets positioned relative to the vertical axis provide an axial force for axially stabilizing the tape guide roller.

The method includes measuring a reference servo band difference (SBD) from a beginning of tape (BOT) to an end of tape (EOT) and storing a value of the reference SBD measurement in a memory. A shorter length of tape, less than the full length of the tape, is cycled a number of times to acclimate the shorter length of tape. An SBD after cycling of the shorter length of tape is determined, and an acclimatization change for the shorter length of tape is determined, the SBD being the difference between the reference SBD for the shorter length and the SBD after cycling of the shorter length. The method further includes adjusting the reference SBD value based on the determined acclimatization change.

The embodiment of the invention provides a tape reel, a tape unit, a storage system and a write servo driving system, relates to the field of storage, and is used for providing a servo pattern suitable for high-speed rotation of a tape. The servo pattern comprises the first servo stripe, the second servo stripe and the third servo stripe, the first servo stripe is parallel to the third servo stripe, the inclination angle of the servo stripes is small, the transverse size of the servo pattern can be reduced, the frame rate of the magnetic tape unit is improved, and the servo pattern is suitable for high-speed scenes. In addition, the servo position information can be obtained through three servo stripes, the number of times of repetition of the servo stripes is small, multiple servo peak searching is not needed, the calculation overhead is small, the resolving speed is high, and the method can be suitable for rapid resolving of a high-speed scene. And the trajectory of the second servo stripe is a curve, the curve has different slopes at different positions, and the position calculation precision is higher at the position with the smaller slope, so that the precision same as or better than that of a traditional servo can be achieved by using fewer stripes, and the calculation precision is ensured.

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.

This invention relates to magnetic tape cassettes, magnetic tape drives, magnetic tape systems, and methods of operating the magnetic tape drive. The magnetic tape cassette includes: a housing for housing a magnetic tape; and a storage medium disposed within the housing. The magnetic tape pulled from the housing is used for at least one of reading and writing data via a plurality of magnetic elements arranged in a straight line. The arrangement direction of the plurality of magnetic elements is inclined along the entire length of the magnetic tape relative to its width direction. The storage medium stores tilt feature information representing the tilt of the arrangement direction relative to the width direction.

A tape head module and tape guide assembly. The assembly includes a tape head module that is adapted for reading data from tape or writing data to the tape. The assembly further includes a first tape support guide and a second tape support guide that are positioned on opposite sides of the tape head module and in close proximity to the tape head module and adapted to provide a short and stiff portion of the tape located near the tape head module and provide a stable interface between the tape head module and the tape.

Provided is a magnetic tape device including: a magnetic head having a magnetic element that acts in proximity to a magnetic layer formed on a front surface of a magnetic tape; and a support member which is disposed at a position facing the magnetic head and against which a back surface of the magnetic tape provided on a side opposite to the front surface is pressed, in which the support member has a groove formed along a running direction of the magnetic tape only in a region corresponding to a non-acting region except for a region of the magnetic layer on which the magnetic element acts.