Optical scanning device and image forming apparatus including optical scanning device
AssigneeSharp Kabushiki Kaisha
InventorsAtsuo Nakao, Hiroshi Yamamoto, Hidenori Sato, Hiroaki Goi
Life of this patent
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Abstract
An optical scanning device includes a housing and an fθ lens accommodated in the housing. The housing has a bottom surface, and side walls erected from a bottom surface and surrounding the bottom surface along a perimeter thereof. One side wall of the side walls has, on an outer surface thereof, one or more positioners that position the optical scanning device relative to an image forming apparatus main body. The bottom surface has one or more first bottom surface ribs extending from the positioners toward the fθ lens in an oblique direction with respect to the side wall having the positioners in a plan view.
Claims17
An optical scanning device comprising:
- a housing having a bottom surface, and side walls erected from the bottom surface and surrounding the bottom surface along a perimeter of the bottom surface;
- and
- an fθ lens accommodated in the housing, wherein
- one side wall of the side walls has, on an outer surface of the one side wall, a plurality of positioners that positions the optical scanning device relative to a main body of an image forming apparatus,
- the bottom surface has a plurality of first bottom surface ribs respectively extending from the plurality of positioners toward the fθ lens in an oblique direction with respect to the one side wall having the plurality of positioners in a plan view, and
- the plurality of first bottom surface ribs respectively extending from the plurality of positioners intersects with each other.
An optical scanning device comprising:
- a housing having a bottom surface, and side walls erected from the bottom surface and surrounding the bottom surface along a perimeter of the bottom surface;
- and
- an fθ lens accommodated in the housing, wherein
- one side wall of the side walls has, on an outer surface of the one side wall, one or more positioners that position the optical scanning device relative to a main body of an image forming apparatus,
- the bottom surface has one or more first bottom surface ribs extending from the one or more positioners toward the fθ lens in an oblique direction with respect to the one side wall having the one or more positioners in a plan view,
- the bottom surface of the housing has a protrusion protruding from the bottom surface,
- the fθ lens is provided on an upper surface of the protrusion, and
- the one or more first bottom surface ribs are connected to a side surface of the protrusion.
An optical scanning device comprising:
- A housing having a bottom surface, and side walls erected from the bottom surface and surrounding the bottom surface along a perimeter of the bottom surface;
- and
- an fθ lens accommodated in the housing, wherein one side wall of the side walls has, on an outer surface of the one side wall, one or more positioners that position the optical scanning device relative to a main body of an image forming apparatus,
- the bottom surface has one or more first bottom surface ribs extending from the one or more positioners toward the fθ lens in an oblique direction with respect to the one side wall having the one or more positioners in a plan view,
- the housing has outer perimeter walls projected outward from outer surfaces of the side walls and surrounding the outer surfaces, and
- a top outer perimeter wall of the outer perimeter walls, in an erection direction of the side walls erected from the bottom surface of the housing, has an erected wall erected in the erection direction.
Dependencies are inferred from the claim text.