Appeal No. 96-1837
Application No. 08/083,372
The invention is directed to a disk drive apparatus and
method which prevents vibrations in the disks produced by changes
in environmental temperature. More particularly, a buffer member
is placed between two adjacent members wherein the buffer member
has a thermal expansion coefficient which is substantially an
intermediate value between thermal expansion coefficients of the
two adjacent members. Further, the difference between the
thermal expansion coefficients of the two adjacent members is
larger than about 10 x 10 (1/°C).-6
Representative independent claim 1 is reproduced as follows:
1. A disk drive apparatus comprising:
a rotating member having an engagement portion;
a disk-like recording medium;
a clamp for urging the recording medium against the
engagement portion of the rotating member with a predetermined
fixing force to fix the recording medium to the rotating member;
and
a metal buffer member provided in at least one of a position
between the recording medium and the engagement portion and a
position between the recording medium and the clamp, the buffer
member having a thermal expansion coefficient which is
substantially an intermediate value between thermal expansion
coefficients of the two members located on two sides of the
buffer member, wherein the difference between the thermal
expansion coefficients of the two members located on the two
sides of the buffer member is larger than about 10 x 10 (1/°C).-6
2
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Last modified: November 3, 2007