PURPOSE: A scanner motor secures the longevity and rotation stability in the superhigh speed rotation by including the hybrid-type bearing. CONSTITUTION: A base plate(110) on the whole supports a scanner motor. A bearing holder(120) supports a bearing(130) accepted to inside. The bearing is used in order to pivotally support a rotary shaft(140). The rotary shaft supports a rotor case(170) with shaft. A housing shaft(150) is fixed to a polygon mirror(160) and a supporting member(190), the housing shaft installs on the top of the rotor case. The polygon mirror makes lean toward the beam of light coming from the light source. The supporting member prevents secession and rising of the polygon mirror. A stator(180) is installed in the outer circumference of the bearing holder.
