Title:
OPTICAL SCANNING DEVICE AND IMAGE FORMING DEVICE USING THE SAME
Document Type and Number:
Japanese Patent JPH09146029
Kind Code:
A
Abstract:
To prevent a laser beam from leaking out of the optical scanning device by a simple mechanism.
Plural permanent magnets 5 are arranged on a rotary polygon mirror 3 and an electromagnet 6 is arranged above them across a slight gap. The permanent magnets 5 and electromagnet 6 attract each other magnetically to attract each other wherever the rotary polygon mirror 3 stops, and the rotary polygon mirror 3 is positioned so that a laser beam L reflected by the rotary polygon mirror 3 leaks out of an optical housing by traveling in the opposite direction to its regular scanning direction.
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Inventors:
MIYAZAKI YOSHINORI
Application Number:
JP32519395A
Publication Date:
June 06, 1997
Filing Date:
November 20, 1995
Export Citation:
Assignee:
RICOH KK
International Classes:
G02B26/12; G02B26/10; G03G15/04; G03G15/043; G03G15/047; (IPC1-7): G02B26/10; G03G15/04; G03G15/043
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