5results about "Manufacturing heads with multiple gaps" patented technology

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.

To provide a servo writer that reduces the number of cartridges to be discarded.SOLUTION: A servo writer 210 for a cartridge 10 includes: a traveling portion that feeds out a tape-shaped magnetic recording medium (magnetic tape MT) from the cartridge and winds the feed magnetic recording medium to make the magnetic recording medium travel; a demagnetizing magnet 214 that erases a first servo pattern formed on the traveling magnetic recording medium; a servo signal writing head 215 that writes a servo signal onto the traveling magnetic recording medium after the first servo pattern is erased and forms a second servo pattern; and a control device that controls the head to write the servo signal during at least one of acceleration and deceleration traveling periods of the magnetic recording medium and forms the second servo pattern that does not satisfy the standard on the magnetic recording medium.SELECTED DRAWING: Figure 8

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 invention provides a method and a device for uniformizing a magnetic field of a hard disk degaussing coil. Generating a high-voltage pulse current, and converting the high-voltage pulse current into a transient strong pulse magnetic field; detecting transient strong pulse magnetic field intensity data between the space position of the center area of the degaussing coil and the space position of the edge area of the degaussing coil; through the magnetic conductive device, the magnetic field intensity is enhanced, leakage scattering magnetic flux near a port of the main degaussing coil module is captured, and scattering magnetic flux leakage attenuation is compensated; and the peak value of the central magnetic field is increased, and part of magnetic flux is pushed to an unsaturated marginal region, so that the homogenization of the magnetic field is enhanced.

According to one embodiment, a magnetic recording device includes a magnetic recording medium, a magnetic head configured to record information on the magnetic recording medium, and a controller configured to control the magnetic recording medium and the magnetic head. The magnetic head includes a coil, a first magnetic pole configured to generate a magnetic field according to a recording current supplied to the coil, and a light emitting section configured to irradiate the magnetic recording medium with a light to locally increase a temperature of the magnetic recording medium. The controller is configured to perform a first operation and a second operation. In the first operation, the controller is configured to record a first servo position information in a first region of the magnetic recording medium. In the second operation, the controller is configured to perform a repair operation if a first condition is not satisfied.