Patent ID: 8537646

Claim:
An information recording and reproduction apparatus comprising: a magnetic recording medium mounted to undergo rotation in a predetermined direction; a light source that emits a light beam to heat the magnetic recording medium; a carriage mounted to undergo rotation about a pivot shaft; a slider supported at a distal side of the carriage so as to face a surface of the magnetic recording medium, the slider having a spot light generating element that generates spot light from the light beam; a control unit that controls an operation of the slider; and a photoelectric composite wiring line in which an optical waveguide, which introduces the light beam emitted from the light source into the slider, and a plurality of electric wiring lines, which electrically connect the slider and the control unit to each other, are integrally formed, the optical waveguide being arranged between the plurality of electric wiring lines and being introduced into the slider in a state at being approximately straight; wherein information is recorded on the magnetic recording medium by heating the magnetic recording medium with the spot light generated by the slider and causing magnetization reversal by applying a recording magnetic field to the magnetic recording medium.