US 7,460,338 B2Granted

Wiring component and magnetic recording drive for high data-rate recording

AssigneeHitachi Global Storage Technologies Netherlands B.V.

InventorHiroshi Okabe

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Abstract

Embodiments of the invention enable high-speed data recording on a magnetic recording medium. In one embodiment, a first section is provided at the recording and reproducing circuit IC side of the inter-connect substrate while a second section is provided at the head side and a third section is provided between a position closer to the head than a section crossed by a spring part of the suspension and the head. Then, the characteristic impedance of the third section recording line is set lower than that of the recording line in the second section except for the first and third sections and the wiring distance between the recording line and the reproducing line in the third section is set longer than that between the recording line and the reproducing line in each of the first and second sections. In addition, the output resistance of the recording and reproducing circuit IC is equated with the characteristic impedance of the main FPC recording line.

Claims18

Dependent claims

A wiring component, including:

a head element for recording/reproducing information on/from a recording medium;
a recording and reproducing circuit configured to supply a signal to be recorded to said head element and amplify a signal to be reproduced by said head element;
a first line provided at said recording and reproducing circuit side and used to connect said recording and reproducing circuit to said head element;
and
a second line provided at said head element side and used to connect said recording and reproducing circuit to said head element,
wherein a first recording line of said second line, which transmits said signal to be recorded, is divided into a first section for said recording and reproducing circuit side and a second section for said head element side,
wherein said second section includes a portion of said first recording line, which has characteristic impedance lower than characteristic impedance of said first recording line of said first section, and another portion of said first recording line, which has characteristic of impedance matching with characteristic impedance of said first recording line of said first section,
wherein, when said second line is formed on a substrate and said substrate is fixed to a suspension on which said head element is to be mounted, said first section is provided between said first line and a fixing position for fixing said substrate to said suspension and closest to said recording and reproducing circuit, and
wherein said second section is provided between said fixing position and said head element.

6 more elements

A magnetic recording drive, including:

a recording medium for recording data;
a wiring component configured to record/reproduce data on/from said recording medium;
a suspension configured to fix said wiring component;
an arm configured to drive said suspension;
and
a signal processor configured to process a signal to be recorded on said wiring component and process a reproducing signal received from said wiring component,
wherein said wiring component includes:
a head element for recording/reproducing data on/from said recording medium;
a recording and reproducing circuit configured to supply a signal to be recorded to said head element and amplify a signal to be reproduced by said head element;
a first line provided at said recording and reproducing circuit side and used to connect said recording and reproducing circuit to said head element;
and
a second line provided at said head element side and used to connect said recording and reproducing circuit to said head element,
wherein a first recording line of said second line, which transmits said signal to be recorded, is divided into a first section for said recording and reproducing circuit side and a second section for said head element side,
wherein said second section includes a portion of said first recording line, which has characteristic impedance lower than characteristic impedance of said first recording line of said first section, and another portion of said first recording line, which has characteristic impedance matching with characteristic impedance of said first recording line of said first section, and
wherein, when said second line is formed on a substrate and said substrate is fixed to said suspension on which said head element is to be mounted, said first section is provided between a fixing position for fixing said substrate to said suspension and closest to said recording and reproducing circuit and said first line while said second is provided between said fixing position and said head element.

12 more elements

Dependencies are inferred from the claim text.