Back to results
US 4,935,832 AGranted
Recording heads with side shields
AssigneeDigital Equipment Corporation
InventorsShyam C. Das, Michael L. Mallary
Life of this patent
Estimating the term…
Abstract
Side shields are provided adjacent to the magnetic poles of recording heads. The side shields are used for read and write operations for both longitudinal and vertical recording. During read, the side shields intercept flux from adjacent tracks and shunts it around the sensor to magnetic ground. During write, side shields contain the write field of the head so that it does not corrupt the data on adjacent tracks. Embodiments are disclosed for both longitudinal and perpendicular or vertical recording.
Claims7
A recording head comprising:
- a center magnetic pole and two outer magnetic poles
- which are coupled in a yoke region in one end of the head and are respectively separated by longitudinally extending gaps as the poles extend longitudinally from the yoke region, the poles terminating at a tip region of the head, this tip region configured to operate generally parallel to the surface of a recording medium;
- and
- at least one magnetic side shield for shielding the center pole disposed adjacent to the center pole, the side shield extending from one of the outer poles generally perpendicularly to the gaps.
1 more element
Dependencies are inferred from the claim text.