Rotary head type magnetic recording reproducing apparatus

A rotary head type magnetic recording reproducing apparatus, comprising:

• a fixed drum having an axis;
• a rotor including a rotary drum supported rotatably about said axis on said fixed drum;
• and
• first and second plate springs each having a movable portion and a fixed portion, with said fixed portion supported by said rotor such that said movable portion is displacable in a direction along said axis;
• wherein
• said first and second plate springs are located opposite to each other with a prescribed distance therebetween;
• said magnetic recording reproducing apparatus further comprising,
• a magnetic head fixedly attached on said movable portion of said first plate spring;
• a movable member including a permanent magnet having first and second magnetic poles, gripped between said movable portion of said first plate spring and said movable portion of said second plate spring;
• a yoke having first and second side surfaces and arranged on said fixed drum such that said first side surface is located opposite to said first magnetic pole of said permanent magnet with a first prescribed space therebetween and said second side surface located opposite to said second magnetic pole of said permanent magnet with a second prescribed space therebetween;
• a first coil attached on said first side surface of said yoke to be opposed to said first magnetic pole of said permanent magnet with a third prescribed space therebetween;
• and
• a second coil attached on said second side surface of said yoke to be opposed to said second magnetic pole of said permanent magnet with a fourth prescribed space therebetween;
• wherein
• said permanent magnet and said first and second coils are arranged such that said magnetic head moves in a direction along said axis when currents are supplied to said first and second coils.