Dynamic information storage or retrieval – Dynamic mechanism subsystem – Specific detail of storage medium support or motion production
Reexamination Certificate
2000-03-27
2002-12-17
Letscher, George J. (Department: 2653)
Dynamic information storage or retrieval
Dynamic mechanism subsystem
Specific detail of storage medium support or motion production
Reexamination Certificate
active
06496472
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a disk mounting device for optical disk driver, especially to a disk mounting device with skidproof rubber pads, by which the runout of the turn table is reduced.
BACKGROUND OF THE INVENTION
The accessing speed of optical disk driver is rapidly increased as the demand of larger-storage devices is urgent. Recently, the optical disk drivers with 10000 RPM spindle motor speed have become the main stream of the market.
However, the speed increment of the optical disk driver is challenged by several factors such as vibration, noise and runout of turntable thereof. It is important issue to minimize the runout of turntable in a cost effective way.
There are two approaches to reduce runout. First, the turntable is manufactured by turning off brass materials. Second, the turntable is manufactured by plastic injection and then processed by turning off.
However, the above manufactured turntable has high cost either caused by material used or additional process involved.
It is the object of the present invention to provide a disk-mounting device for optical disk driver, which has a novel assembling manner such that the runout of the turn table is reduced.
To achieve the above object, the present invention provides a disk-mounting device for optical disk driver a turntable, at least three skidproof rubber pads arranged on the turntable to compensate runout of the turntable. Before attaching the skidproof rubber pads, the turntable height at three points with equal radius and separated by 120 degrees is measured. The height of the skidproof rubber pads is selected to compensate runout of the turntable. Therefore, the runout of the turntable is reduced in a cost effective manner.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:
REFERENCES:
patent: 4370371 (1983-01-01), Nakahira
patent: 2000-215643 (2000-08-01), None
Chen Tzu Nan
Chuang Jui-Nan
Liao Cheng-Yao
Wang Ta Hsiang
Letscher George J.
Lite-On It Corporation
Rosenberg , Klein & Lee
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