Magnetic disk drive
AssigneeHitachi, Ltd.
InventorsYohji Maruyama, Hiroshi Ikekame, Hisashi Takano
Life of this patent
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Abstract
Magnetic disk apparatus includes an electric wiring capable of satisfying an electric condition under which high frequency recording higher than or equal to 200 MHz, a magnetic head having at least a recording device to a magnetic recording medium, and also the electric wiring corresponding to a recording current supplying device to this magnetic head are formed on a suspension member for mechanically suspending the magnetic head, the recording current being supplied to a magnetic head recording device by employing such electric wiring, the characteristic impedance of which is higher than a maximum impedance of the magnetic head recording device.
Claims5
A constructural member comprising:
- a magnetic head including a write element;
- an integrated circuit for executing an electric signal received from said magnetic head;
- at least one electric conducting path for interconnecting said write element and said integrated circuit;
- a suspension for suspending said magnetic head;
- and
- an arm for supporting said suspension,
- wherein a characteristic impedance of said one electric conducting path is higher than an impedance of said write element within a range less than an operation frequency.
A constructural member comprising:
- a magnetic head including a write element and a read element;
- an integrated circuit for executing an electric signal received from said magnetic head;
- at least one electric conducting path for interconnecting said write element and said integrated circuit;
- at least another electric conducting path for interconnecting said read element and said integrated circuit,
- a suspension for suspending said magnetic head;
- and
- an arm for supporting said suspension,
- wherein a characteristic impedance of said one electric conducting path is higher than an impedance of said write element within a range less than an operation frequency,
- wherein a characteristic impedance of one electric conducting path for interconnecting said write element is higher than a characteristic impedance of another electric conducting path for interconnecting said read element.
Dependencies are inferred from the claim text.