| 摘要 |
PURPOSE:To uniform temperature distribution among magnetic disks and to prevent a thermal off-track state by providing a straightening member with a group of rod-shaped arms which are inserted between the magnetic disks and extend radially, and making the arms different in insertion length among the disks. CONSTITUTION:A carriage 4 mounting a servo head 3a and data heads 3b which reading and writing information out of and on a servo disk 1a and plural data heads 1b moves on a base 5, the arms of the rectifying member 6 are inserted between disks, and the whole is sealed hermetically with a cover 9. The straightening member 6 straightens air between disks with its arms to prevent unnecessary oscillations of the heads 3a and 3b due to turbulence. The arms of the straightening member 6 vary in length or width according to temperatures between disks to vary the heating value due to wind loss and uniform the temperature distribution, and the difference in thermal expansion between the servo head 3a and data heads 3b is eliminated to prevent the thermal off-track state.
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