| 摘要 |
PURPOSE:To reduce noise by positoning a magnetic head in a hole provided in a printed board, and providing a one-turn shield on the periphery of the hole. CONSTITUTION:A printed board 1 equipped with an electric circuit is provided on the upper surface side of a floppy disk to be mounted and a magnetic head 3 is positioned in a hole 4 provided in the board 1. Namely, a one-turn shield 2 having a grounded conductor pattern is provided on the periphery of the hole 4 in the board 1. Because of the one-turn shield 2, a shield is directly provided around the magnetic head 3 and the noise from the board 1 or the influence of noise from the outside to the magnetic head 3 can be reduced. |
