Method and apparatus for improved attachment of a...

Details Method and apparatus for improved attachment of a... Method and apparatus for improved attachment of a...

2002-02-13

2004-06-15

Evans, Jefferson (Department: 2652)

Dynamic magnetic information storage or retrieval

Head mounting

For adjusting head position

C360S234600

Reexamination Certificate

active

06751069

ABSTRACT:

BACKGROUND INFORMATION
The present invention relates to magnetic hard disk drives. More specifically, the present invention relates to a system for attachment of a hard disk micro-actuator to a slider device.
In the art today, different methods are utilized to improve recording density of hard disk drives.
FIG. 1
provides an illustration of a typical drive arm configured to read from and write to a magnetic hard disk. Typically, voice-coil motors (VCM)
102
are used for controlling a hard drive's arm
104
motion across a magnetic hard disk
106
. Because of the inherent tolerance (dynamic play) that exists in the placement of a recording head
108
by a VCM
102
alone, microactuators
110
are now being utilized to ‘fine-tune’ head
108
placement, as is described in U.S. Pat. No. 6,198,606. A VCM
102
is utilized for course adjustment and the micro-actuator then corrects the placement on a much smaller scale to compensate for the VCM's
102
(with the arm
104
) tolerance. This enables a smaller recordable track width, increasing the ‘tracks per inch’ (TPI) value of the hard drive (increased drive density).
FIG. 2
provides an illustration of a micro-actuator as used in the art. Typically, a slider
202
(containing a read/write magnetic head; not shown) is utilized for maintaining a prescribed flying height above the disk surface
106
(See FIG.
1
). Micro-actuators may have flexible beams
204
connecting a support device
206
to a slider containment unit
208
enabling slider
202
motion independent of the drive arm
104
(See FIG.
1
). An electromagnetic assembly or an electromagnetic/ferromagnetic assembly (not shown) may be utilized to provide minute adjustments in orientation/location of the slider/head
202
with respect to the arm
104
(See FIG.
1
).
Attachment of a slider assembly to a micro-actuator can be difficult and/or expensive due to the dimensions within which it must occur. Bonding means must be very precise. It is therefore desirable to have a system for attachment of a hard disk micro-actuator to a slider device that improves the precision and consistency of slider bonding operations.


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