Light scanning device and thrust-direction force canceling method
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorTakashi Shiraishi
Life of this patent
Estimating the term…
Abstract
At least a part of a first thrust-direction force generated by air resistance received by at least one surface of reflection surfaces arrayed in a rotating direction of a polygon mirror 35 and tilted with respect to a rotation axis 35p of the polygon mirror 35 is canceled by a second thrust-direction force generated by air resistance received by a surface tilted with respect to the rotation axis 35p in a direction opposite to the surface where the first thrust-direction force is generated.
Claims13
A light scanning device comprising:
- a rotary deflector configured to reflect and deflect an incident luminous flux by plural reflection surfaces arrayed in a rotating direction and thus cause the incident luminous flux to scan a predetermined direction, in which at least one of the plural reflection surfaces is tilted with respect to the rotation axis of the rotary deflector;
- and
- a thrust-direction force canceling unit supported in a rotatable manner integrally with the plural reflection surfaces of the rotary deflector, and having a wind receiving surface tilted with respect to the rotation axis of the rotary deflector in a direction opposite to at least one surface of the reflection surfaces tilted with respect to the rotation axis, being disposed at a different position from the one surface in rotational direction and configured to cancel thrust-direction force resulted from the one surface.
A light scanning device comprising:
- a light source configured to emit luminous flux;
- and
- a rotary deflector configured to include that a first reflection surface configured to tilt with respect to the rotation axis at only one angle and reflect and deflect luminous flux emitted from the light source, and a second reflection surface being disposed at a different position from the first reflection surface in rotational direction, configured to tilt with respect to the rotation axis in a direction opposite to the first reflection surface at single angle, cancel thrust-direction force resulted from the first reflection surface and reflect and deflect luminous flux emitted by the light source.
An image forming apparatus comprising:
- a light source configured to emit luminous flux;
- a rotary deflector configured to include that a first reflection surface configured to tilt with respect to the rotation axis at only one angle and reflect and deflect luminous flux emitted from the light source, and a second reflection surface being disposed at a different position from the first reflection surface in rotational direction, configured to tilt with respect to the rotation axis in a direction opposite to the first reflection surface at single angle, cancel thrust-direction force resulted from the first reflection surface and reflect and deflect luminous flux emitted by the light source;
- a photoconductor configured to form a latent image on the surface by the light reflected by the rotary deflector;
- and
- a transfer belt configured to transfer the image developed according to the latent image on the photoconductor.
Dependencies are inferred from the claim text.