Patent ID: 8243388
Filing Date: 2012-08-14
Classification: G11B

Abstract:
1. A slider for heat-assisted magnetic recording, said slider and a light source unit constituting a heat-assisted magnetic recording head, said light source unit being joined to an end surface opposite to a medium-opposed surface of said slider, and said light source unit including: a light source provided on a source-installation surface of a unit substrate; and a surface including an emission center of said light source, and protruded from a joining surface perpendicular to said source-installation surface of said unit substrate, said slider comprising: a slider substrate; and a head part formed on an element-integration surface perpendicular to the medium-opposed surface of said slider substrate, and including: a write head element for writing data to a magnetic recording medium; and a waveguide having an incident center on its end opposite to the medium-opposed surface, for guiding an entering light to the medium-opposed-surface side, a step being provided on an end surface opposite to the medium-opposed surface of said head part, said step formed so that a portion on the slider-substrate side of the end surface of said head part becomes higher, and a distance between a wall surface of said step and the incident center of said waveguide being set to be equal to a distance between the emission center of said light source and a portion of a lower surface of said light source, said portion being protruded from said unit substrate.