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US 11,914,139 B2Granted
Scanning optical apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorWataru Sato
Life of this patent
Estimating the term…
Abstract
A scanning optical apparatus includes a first light source unit, a second light source unit, a rotary polygon mirror and a casing provided with a bottom surface on which said deflection unit is disposed. The second light source unit is disposed at a position away from the bottom surface more than the first light source unit with respect to a rotational axis direction of the rotary polygon mirror. The casing is provided with first and second supporting surfaces for supporting the first and second light source. Both the first and second supporting surfaces are faced in a direction away from the bottom surface.
Claims17
A scanning optical apparatus comprising:
- a first light source unit provided with a first light source and a cylindrical first holding member for holding said first light source;
- a second light source unit provided with a second light source and a cylindrical second holding member for holding said second light source;
- a deflection unit provided with a rotary polygon mirror for deflecting laser beams emitted from said first light source and said second light source;
- and
- a casing provided with a bottom surface on which said deflection unit is disposed,
- wherein said second light source unit is disposed further from the bottom surface than said first light source unit with respect to a rotational axis direction of said rotary polygon mirror,
- wherein said casing is provided with a first supporting surface for supporting said first light source unit and a second supporting surface for supporting said second light source unit,
- wherein both the first supporting surface for supporting said first light source unit and the second supporting surface for supporting said second light source unit are faced in a direction opposite to a direction facing the bottom surface, and are faced in the same direction as each other,
- wherein said first light source unit and said second light source unit are mounted to the first supporting surface and the second supporting surface corresponding to said first light source unit and said second light source unit in the same direction along the rotational axis direction, and
- wherein said first light source unit is mounted to the first supporting surface through a mounting space for said second light source unit, and said second light source unit is mounted to the second supporting surface without passing through a mounting space for said first light source unit.
7 more elements
A scanning optical apparatus comprising:
- a first light source unit provided with a first light source emitting a first laser beam and a cylindrical first holding member for holding said first light source;
- a second light source unit provided with a second light source emitting a second laser beam and a cylindrical second holding member for holding said second light source;
- a deflection unit provided with a rotary polygon mirror for deflecting the first and second laser beams emitted from said first light source and said second light source;
- and
- a casing supporting said first light source unit, said second light source unit, and said deflection unit, said casing includes a first supporting portion for supporting said cylindrical first holding member of said first light source unit and a second supporting portion for supporting said cylindrical second holding member of said second light source unit,
- wherein said first light source unit and said second light source unit are mounted to the first supporting portion and the second supporting portion corresponding to said first light source unit and said second light source unit in the same direction along the rotational axis direction,
- wherein said second light source unit is disposed at a position different from a position of said first light source unit with respect to a rotational axis direction of said rotary polygon mirror,
- wherein said cylindrical first holding member includes a concave first notched portion recessed in a radial direction of said cylindrical first holding member and extends along the rotational axis direction,
- wherein when said first light source unit is mounted to said first supporting portion along the rotational axis direction, said second supporting portion is inserted into said concave first notched portion, and
- wherein said second light source unit is mounted to said second supporting portion after said first light source unit is mounted to said first supporting portion.
7 more elements
Dependencies are inferred from the claim text.