| 摘要 |
<p>PURPOSE:To lower assembling cost of the apparatus significantly by setting a stator section of a rotary drive motor on a circuit board to eliminate any connection member. CONSTITUTION:In a drive mechanism of a rotary magnetic heat drum, a drive coil 67, a fixing ground plate 68 and a stator section 70 comprising a core 69 are mounted on a circuit board 76 with a screw 74 together with the fixing ground plate 68. A rotor section 73 comprising a drive magnet 71 and a rotary disc 72 is mounted on a rotating shaft assembly with a screw 75 together with the rotary disk 72. A drive current is supplied to a drive coil 27 from the circuit board 76 which has the circuit board 76 connected to the drive coil 67 at one end part 67a thereof. When the drive current is supplied directly to the drive coil 67 from the circuit board 76, rotary magnetic field is generated in the coil 67 centered on a rotating shaft 11 to drive and rotate the rotor section 7 and a rotary magnetic head drum 6 is rotated. As the stator section 70 of a drum motor is set on the circuit board 76, the stator section 70 can be connected to the circuit board 76 at one end part 67a of the drive coil 67 thereby dispensing with a connection member for supplying the drive current.</p> |
