| 摘要 |
PROBLEM TO BE SOLVED: To provide a polygon mirror scanner device which does not require highly accurate bonding but has high durability, and is easy to manufacture without increasing the number of components. SOLUTION: This polygon mirror scanner device 10 has a rotor part 11 with a multipole magnet 18 mounted on a rotor 16, a rotary shaft 17 of the rotor part 11, and a stator part 12 provided with windings 14 opposed and separated at a fixed distance on the multipole magnet 18. And, a polygon mirror P is constituted by forming the rotor 16 into a regular square pillar and making each side of the regular square pillar of the rotor 16 as mirror finished surfaces 16b, and a projecting part 16c for press-fitting the magnet on one bottom of the rotor 16 is formed and an annular groove part 16h to be engaged with the projecting part 16c is formed on the other bottom corresponding to the projecting part 16c. |
