Patent ID: 8065786

Claim:
A manufacturing method of a heat-assisted magnetic recording head, in which a light source unit is joined to a slider, said light source unit comprising: a unit substrate; and a light source provided on a source-installation surface of said unit substrate, a surface including an emission center of said light source being protruded from a joining surface perpendicular to said source-installation surface of said unit substrate, said slider comprising a head part formed on an element-integration surface perpendicular to a medium-opposed surface of a slider substrate, said head part including: a waveguide; and at least one electrode layer provided below said waveguide, a step being provided on an end surface opposite to a medium-opposed surface of said head part, at least a portion of a wall surface of said step being an upper surface of said at least one electrode layer, said manufacturing method comprising the steps of: moving relatively said light source unit and said slider, while applying a voltage sufficient for emission of said light source between an upper electrode of said light source and said at least one electrode layer; and setting said light source unit and said slider in desired positions in a direction perpendicular to the element-integration surface of said slider substrate, said desired positions being positions where said light source just emits due to a surface contact between: the portion protruded from said unit substrate of the lower surface of said light source; and the upper surface of said at least one electrode layer which is at least a portion of the wall surface of said step.