Optical scanner and image forming apparatus
AssigneeSeiko Epson Corporation
InventorYasushi Mizoguchi
Life of this patent
Estimating the term…
Abstract
An optical scanner includes: a light reflecting section having light reflectivity; a movable plate which includes the light reflecting section and can be displaced; four link sections connected to the movable plate; and a supporting section supporting the four link sections. The four link sections are provided on an outer circumference of the movable plate at 90-degree intervals along a circumferential direction of the movable plate in a plan view. Each link section includes a turnable drive section, and a shaft section which connects the movable plate and the drive section. The shaft section is bent and deformed in a thickness direction of the movable plate by turning the drive section.
Claims20
An optical scanner comprising:
- a light reflecting section;
- a movable plate provided to the light reflecting section;
- four link sections connected to the movable plate;
- and
- a supporting section supporting the four link sections,
- the four link sections are provided on an outer circumference of the movable plate at 90-degree intervals along a circumferential direction of the movable plate in an X-Y plane view,
- each link section includes:
- a turnable drive section, and
- a shaft section which connects the movable plate and the turnable drive section,
- the shaft section including a stress alleviating section, and
- a movable plate-side shaft section connecting the stress alleviating section and the movable plate, and
- a drive section-side shaft section connecting the stress alleviating section and the turnable drive section, and
- the movable plate-side shaft section have a lower torsional stiffness than the drive section-side shaft section with comparing the movable plate-side shaft section with the drive section-side shaft section.
Dependencies are inferred from the claim text.