Optical scanning apparatus and image forming apparatus

Facsimile and static presentation processing – Facsimile – Picture signal generator

Reexamination Certificate

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Details

C358S511000, C358S474000, C359S223100, C359S224200

Reexamination Certificate

active

07446911

ABSTRACT:
An optical scanning apparatus for optical scan that oscillates at least partially an oscillating body having a reflective mirror portion, to thereby modulate a direction in which the reflective mirror portion causes incident light thereon to be reflected off, is disclosed, the oscillating body comprising: a first spring portion, coupled to the reflective mirror portion, and excited to generate a torsional oscillation of the first spring portion; and a plurality of second spring portions, coupled to the first spring portion, and coupled to a fixed frame portion of the oscillating body in a bifurcation manner with a bifurcation spacing of the plurality of second spring portions being larger than a width of the first spring portion, the plurality of second spring portions being excited to generate flexural and torsional oscillations thereof.

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