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US 5,517,365 AGranted
Polygonal mirror
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorHatsuichi Takeyasu
Life of this patent
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Abstract
A polygonal mirror according to the present inventio is provided with a mirror body, a plurality of reflection faces formed to side surfaces of the mirror body, and reinforcing ribs integrally formed to both the upper and lower surfaces of the mirror body, respectively. Each of the reinforcing ribs has an outer circumference that is larger than the outer circumference of the mirror body.
Claims19
A polygonal mirror comprising:
- a mirror body molded from a plastic material in which a spherical material, having a predetermined particle size or less, is dispersed;
- and
- at least one reflection face formed on a side surface of said mirror body,
- wherein when said mirror is rotated, an incident light ray is deflected by said reflection face to perform a scanning function.
1 more element
A polygonal mirror, comprising:
- a mirror body formed of plastic material with substantially spherical particles dispersed throughout said plastic material;
- said mirror body having at least one reflective surface.
A polygonal mirror, comprising:
- a mirror body formed of plastic material with substantially spherical particles dispersed throughout said plastic material, said particles comprising about 40% by weight of said mirror body and being a metallic silicon powder having an average size of less than or equal to approximately 0.5 .mu.m.;
- and
- said mirror body being formed by injection molding and having at least one reflective surface.
Dependencies are inferred from the claim text.