MAGNETIC HEAD DRIVING DEVICE AND MAGNETIC RECORDER FORMED BY USING THIS DEVICE

• Main Authors: MATSUMOTO MASAAKI, KIN YOUKEN
• Format: Patent
• Language: English
• Published: 05.02.1993
• Subjects: INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

PURPOSE:To provide the magnetic head driving device which subjects a magnetic head to seek driving to execute rapid seeking with low electric power consumption and has the structure capable of forcibly controlling a floating quantity at the time of starting and stopping the magnetic head and to provide the magnetic recorder mounted with this device by providing a displacement expanding mechanism which expands the displacement of a piezoelectric element or magneto-restriction element on the magnetic head driving device of the magnetic recorder, such as magnetic disk device. CONSTITUTION:The seek driving of the magnetic head 5 is executed by expanding the displacement of the piezoelectric element 1 or the magneto-restriction element with one state or two stages of the displacement expanding mechanism 3 utilizing the principle of a lever. The floating quantity of the magnetic head 5 is controlled by expanding the displacement of the piezoelectric element 2 or the magneto-restriction element in one stage. The displacement expanding mechanism 3 is made into a structure symmetrical to the center line and is provided with an out-of-surface constituting member 7 projecting from the inside of the seek driving surface. All the notches are disposed on the same plane. The notches are so formed that the seek driving or the out-of-surface driving is freely executed.