Patent ID: 7468858

Claim:
An information recording apparatus comprising: a recording medium; a swing arm driven by an actuation unit, said swing arm swinging over a surface of said recording medium in response to driving by said actuation unit; a recording head carried by said swing arm and scanning over said surface of said recording medium with a swinging motion of said swing arm by said actuation unit, said recording head recording information to said recording medium; a head retracting mechanism retracting said recording head out of said recording medium in an unload state where no recording is to be made on said recording medium; an optical injection unit injecting a light into said recording head, said recording head including an optical irradiation part irradiating said light injected to said recording head upon said recording medium when recording information to said recording medium, wherein said optical injection unit is integrated with said head retracting mechanism to form a unitary optical-injection and head-retraction mechanism, said optical injection unit having a ramp surface with a predetermined curvature, said light being reflected and focused on said recording head by said ramp surface of said optical injection unit, said head retracting mechanism including a sloped surface for engaging with said swing arm when said recording head is retracted out of said recording medium.