Sae Magnetics (h.k.) Limited

Rudy Ayala

Niraj Mahadev

Kazumasa Yasuda

Winston Jose

Tam Minh Nguyen

A simple method is provided for protecting slider mounted read/write transducers from electrostatic discharge damage during the manufacture of disk drives. The method involves placing a ball of conducting thermoplastic resin, such as a gold or silver epoxy, between the terminal pads of the transducer and using the ball to shunt the pads to read-head shields and the slider substrate and thence to ground. The epoxy ball is easily applied and easily removed and can be used at different stages in the manufacturing process.

Method to protect a GMR head from electrostatic damage during the manufacturing process

A system and method for producing micro-texture on a slider substrate using chemical & mechanical polishing techniques is described. In certain embodiments of the present invention, this is accomplished by a method comprising formulating an abrasive slurry solution of predetermined acidity (or pH value), treating a chemical mechanical polishing pad with the abrasive slurry, disposing magnetic heads on the chemical mechanical polishing pad and lapping and grinding the magnetic heads for a predetermined period of time. In certain embodiment of the present invention the lapping and grinding of the magnetic heads are accomplished using an apparatus comprising an abrasive slurry solution of predetermined acidity (pH value), a chemical mechanical polishing pad treated with the abrasive slurry solution, wherein the magnetic heads are attached to a fixture capable of disposing the heads on the chemical mechanical polishing pad.

Method and apparatus for producing micro-texture on a slider substrate using chemical and mechanical polishing techniques

The overcoat of a slider (alumina) is recessed relative to the slider ABS by a non-abrasive CMP process sufficiently to prevent thermal protrusion of the overcoat during subsequent slider use in a hard disk drive. The CMP process involves the oscillatory and rotational compressional contact between the ABS surface of the slider and a polymerically pre-treated compliant pad that is sprayed by an aqueous alkali lubricating solution having a pH between about 9 and 10. The overcoat is thereby also softened by the lubricating solution and removed by the compressional contact and no use of abrasives is required.

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San Jose, CA, United States of America

Rudy Ayala