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AssigneeInternational Business Machines Corporation
InventorsYu-En Percy Chang, Thomas Young Chang, Michael A. Parker
Estimating the term…
A method for finishing a pole tip trimmed read/write heat that includes a substrate with a pole tip structure having a shield, a shield/pole, and an outer pole. A gap region separates the pole and the shield/pole. First, pole tip trimming is performed to the read/write head to remove matter from the shield/pole, the pole, and the gap region. This defines a bridge composed of inward-facing extensions of the pole and shield/pole interconnected by an intervening region. This bridge separates recessed “trenches,” each formed by removing a contiguous mass from the shield/pole, the gap region, and the pole. Next, an overlayer is applied over the pole tip structure, filling the recessed trenches. The coated structure is then trimmed to remove all coating material overlying the shield/pole and pole. Trimming is continued to additionally remove a top layer of the protrusions of the pole and shield/pole to remove any rounded edges created by pole tip patterning, resulting in a more distinct write head. The refilled trenches of the recessed areas impart improved resistance to corrosive attack, to head-crashes from the release of accumulated debris, and to mechanical damage of the trimmed pole-tip structure.
A method for finishing a read/write head that includes a pole tip structure, the pole tip structure including a shield, a shield/pole, and a pole substantially parallel to the shield/pole, where a gap region separates the pole and the shield/pole, the method comprising:
A read/write head product manufactured by a process comprising:
A method for finishing a pole-tip-trimmed read/write head that includes a slider having an air bearing surface and a pole tip structure having a substantially planar surface coincident with the air bearing surface, the pole tip structure including a shield, a pole, a shield/pole interposed between the shield and pole, and an intervening region between the pole and shield/pole, where the air bearing surface has complementary pockets defined therein, each pocket occupying opposing edges of the pole and shield/pole and the intervening region therebetween so as to form opposing rectangular extensions protruding from the pole and shield/pole in substantial alignment with each other, the rectangular extensions exhibiting rounded edges at the air bearing surface, the method comprising operations of:
Dependencies are inferred from the claim text.