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US 5,687,016 AGranted
Light beam deflecting device
AssigneeFuji Xerox Co., Ltd.
InventorMasanori Seto
Life of this patent
Estimating the term…
Abstract
In a light beam deflecting device for deflecting a laser beam by using a rotary polygon mirror, the rotary shaft of the rotary polygon mirror is rotatably supported by a plurality of ball bearings which, when turned, vibrate at different frequencies, thus producing no beat sound.
Claims6
A drive device comprising:
- drive means including a rotary shaft member;
- and
- a plurality of ball bearing members for supporting the rotary shaft member of said drive means rotatably, each of said plurality of ball bearing members includes a plurality of balls, said plurality of balls of any one of said plurality of ball bearing members having a different diameter from said plurality of balls of any other one of said plurality of ball bearing members,
- whereby, vibrations produced by each of said plurality of ball bearing members when rotated are different in frequency from one another so as to minimize beating sound.
1 more element
A drive device comprising:
- drive means including a rotary shaft member;
- and
- a plurality of ball bearing members for supporting the rotary shaft member of said drive means rotatably, each of said plurality of ball bearing members includes a plurality of balls, said plurality of balls of any one of said plurality of ball bearing members are different both in diameter and in number from said plurality of balls of any other one of said plurality of ball bearing members,
- whereby, vibrations produced by each of said plurality of ball bearing members when rotated are different in frequency from one another so as to minimize beating sound.
1 more element
Dependencies are inferred from the claim text.