Patent ID: 7894162

Claim:
A method of forming a slider-mounted read/write head that does not exhibit thermal asperities due to head-disk interactions during hard disk drive operation comprising: providing the slider-mounted read/write head, said slider-mounted read/write head having an interfacial plane between a slider substrate and a read/write head portion and said substrate having a substrate ABS plane that is perpendicular to said interfacial plane and said read/write portion having a read/write head portion ABS plane that is parallel to and vertically below said substrate ABS plane; then lapping said substrate ABS plane and said read/write head portion ABS plane of said slider-mounted read/write head in a direction from said read/write head towards said substrate ABS plane, whereby said lapping produces a ridge at a line of intersection between said substrate ABS plane and said interfacial plane, said ridge extending above said substrate ABS plane and said ridge having a smooth vertical profile.