256results about "Housings/shields for recording heads" patented technology

Diffraction gratings for coupling an electromagnetic wave into a planar waveguide are disclosed. The diffraction grating may include a first diffraction grating and a second diffraction grating slanted relative to one another. Alternatively, the diffraction grating may include a first diffraction grating and a second diffraction grating spaced apart to form a gap therebetween.

An embodiment of the invention is a slider with a lift pad and a thermal protrusion pad in which the heads are located. The lift pad is located immediately in front of the thermal protrusion pad and is designed to achieve the flying characteristics needed for normal operation of the disk drive. The thermal protrusion pad includes a heater which is used to protrude the pad for burnishing-on-demand and / or for thermal fly-height control. The thermal protrusion pad is designed to generate very little lift so that protruding the thermal protrusion pad does not significantly increase the lift expericence by the slider. An alternative embodiment uses two overcoat thicknesses on the ABS surface with the thermal protrusion pad having a thin overcoat and the lift pad having a thicker overcoat.

A head suspension prevents a read element from electrostatic discharge damage without employing a static electricity remover or without increasing the number of manufacturing processes. The head suspension has a load beam to apply load to a head that writes and reads data to and from a hard disk, a flexure made of a conductive thin substrate attached to the load beam and supporting the head, an insulating base layer made of flexible resin and formed on the substrate of the flexure, write wires and read wires connected to the head and formed on the insulating base layer, and an insulating cover layer covering the write and read wires on the insulating base layer. The insulating cover layer is made of slightly conductive flexible resin.

A magnetic head includes a shield, and first and second return path sections. The shield has an end face that is located in a medium facing surface to wrap around an end face of a main pole. The shield includes a bottom shield, two side shields, and a top shield. The first return path section includes a yoke layer, and first and second coupling layers that magnetically couple the bottom shield and the yoke layer to each other. The first coupling layer is magnetically connected to the bottom shield. The second coupling layer magnetically couples the first coupling layer to the yoke layer. No end faces of the second coupling layer are exposed in the medium facing surface. The second return path section magnetically couples the top shield and the main pole to each other.

An information processing assembly includes at least one heater suitable for information processing, and a controller for controlling the at least one heater by at least one of adjusting a power to the at least one heater to match a target power level, and changing a polarity of an electrical current supplied to the heater.

A magnetic head (slider) for perpendicular recording which requires no lapping is described. The head is fabricated with an air bearing surface that is parallel to the wafer surface. The coil and pole pieces are formed from thin films disposed parallel to the air bearing surface. Standard lithographic techniques can be used to define the shapes, gaps and pole piece dimensions. Non-rectilinear shapes can be formed; for example, side shields that conform around the write pole piece region. The thickness of the main and return pole pieces are controlled by the deposition process rather than by lapping. The saw cuts used to separate the individual sliders from the rest of the wafer are perpendicular to the air-bearing surface and do not pass through any critical features.

A magnetic head includes a plurality of generally laterally positioned readers, each reader having a sensor, a lower shield below the sensor, an upper shield above the sensor, and a gap defined between the shields. At least one of the readers has a thicker gap than another of the readers. Methods for making such heads are also presented.

A magnetic head includes a plurality of generally laterally positioned readers, each reader having a sensor, a lower shield below the sensor, an upper shield above the sensor, and a gap defined between the shields. At least one of the readers has a thicker gap than another of the readers. Methods for making such heads are also presented.

A magnetic head having a heat sink structure that is disposed proximate the induction coil to draw heat away from sensitive components of the head. The heat sink is fabricated above the second magnetic pole, and is therefore fabricated subsequent to the fabrication of the more delicate components of the magnetic head. In a preferred embodiment, the heat sink is fabricated photolithographically in the same process steps in which the electrical lead to the center tap of the induction coil is fabricated. The only difference in the magnetic head fabrication process is the modification of the photolithographic mask that is used to create the electroplating trench in which the electrical lead is electroplated, and the change to the mask involves the creation of a second opening within the mask for the creation of an electroplating trench at the location of the heat sink.