Patent application number | Description | Published |
20080304181 | METHOD AND APPARATUS FOR PROVIDING AN AIR BEARING WITH HIGHER FLYING HEIGHT FOR LOWER ROTATING SPEED DRIVES - A method and apparatus for improving flying height stability at lower speeds is achieved by an ABS with a channel and pocket. The channel and pocket are configured to achieve a desired flying height profile. | 12-11-2008 |
20090262458 | ABS design for dynamic flying height (DFH) applications - A DFH (Dynamic Flying Height) type slider ABS design has significantly improved DFH efficiency and a decreased sensitivity of flying height to both ambient conditions and disk surface variations. This is a result of embedding the read/write head and heater in a micro-pad having a very small surface area. The micro-pad is surrounded by a wing-like structure that projects from a central rail in the ABS. The micro-pad is separated from the central rail by a surrounding trench whose depth can be varied to tune the DFH efficiency. The small surface area of the micro-pad reduces the air pressure at the read/write head and the projecting wings and adjacent topology help to direct the airflow around the micro-pad. | 10-22-2009 |
20100039732 | ABS design for dynamic flying height (DFH) applications - A DFH (Dynamic Flying Height) type slider ABS design has a stable flying height and a DFH efficiency that is uniform across the entire disk surface. These properties are a result of embedding the read/write head and heater in a trapezoidally bridged micro-pad having a very small surface area. The micro-pad is surrounded by a wing-like structure that projects from a central rail in the ABS and the micro pad is connected to an inner edge of that structure by a bridge having a trapezoidal shape. The trapezoidal shape responds effectively to variations in air flow direction and pressure point as the slider moves across the disk surface and, as a result, provides the uniform DFH efficiency. At the same time, the projecting wings and adjacent topology help to direct the airflow around the micro-pad and provide the stable flying height. | 02-18-2010 |
20120092789 | THERMAL FLY HEIGHT CONTROL MAGNETIC RECORDING HEAD HAVING A NOVEL HEATING ELEMENT GEOMETRY - A heating element for use in a thermal fly height control magnetic recording head of a magnetic data recording system. The heating element has a centrally disposed portion with a straight front edge that is recessed by a substantially constant distance, and has first and second side portions that taper away from the air bearing surface. The side portions preferably taper away from the air bearing surface by an angle of 20 to 45 degrees. The center portion of the front edge is spaced from the air bearing surface by a distance D and has a width W, such that W is 1.5 to 2.5 (or about 2) times D. D is typically 2-6 um to have good heater efficiency while being large enough to not over heat the heater. The heating element has an overall width WW and a overall depth HH from the air bearing surface such that WW is 1.5-2.5 (or about 2) times HH. | 04-19-2012 |
20120300334 | MAGNETIC HEAD WITH SELF COMPENSATING DUAL THERMAL FLY HEIGHT CONTROL - A magnetic head for data recording having a pair of heating elements that self regulate in response to temperature to distribute heat for thermal actuation. The head includes a first heating element located adjacent to the read sensor and away from the writer, and a second heating element located adjacent to the writer. The first and second heating elements have different coefficients of thermal resistance that cause the heating of the second heating element to increase relative to that of the first heating element when the overall temperature increases or when power provided by a power source increases. There, thereby prevents the read sensor from extending too much and possibly contacting the disk. | 11-29-2012 |
20130107390 | TEMPERATURE SENSOR IN A THERMALLY ASSISTED MAGNETIC RECORDING HEAD | 05-02-2013 |
20140002927 | WRITE HEAD STRUCTURE DESIGNED FOR TEMPERATURE INSENSITIVE WRITING PERFORMANCE | 01-02-2014 |
20150062753 | STIFF DISCRETE INSERT ARRAY FOR THERMAL PTR MANAGEMENT WITH DESIRED INDUCED STRESS STATE THAT REDUCES TENDENCY FOR WRITE POLE ERASURE - Embodiments of the present invention generally relate to a magnetic device having a discontinuous array of columns disposed near a magnetic pole. Each column has a length extending perpendicular to an air bearing surface and a width. The length is greater than the width. | 03-05-2015 |