| 摘要 |
PURPOSE:To compactly compose a head drum by arranging a stationary drum at the upper and lower sides of a head drum, inserting a feed screw so as to penetrate a guide sleeve and moving the head drum in the axial direction by this screw. CONSTITUTION:When a head drum 10 is driven with its rotation by a motor 17 by electrifying a coil 18, a magnetic head 12 abuts a magnetic tape 35 and the head drum 10 is moved in the axial direction by a motor 33 simultaneously with the rotation of the head 12. Namely the head drum 10 guided by a guide rod 28 via the upper and lower stationary drums 15, 16 is fed in the axial direction via a feed screw 31 with the rotation of the motor 33. Plural tracks are formed in parallel each other in element the same direction as to length direction of the magnetic tape on the surface of the magnetic tape running with the rotation of such drum 10 and movement in the axial direction and the magnetic recording of a parallel scanning method can thus be achieved. |
