Patent attributes
An optical-scanning apparatus is disclosed. In at least one embodiment, the optical-scanning apparatus includes a light deflector to deflect a beam from a light source; and an optical housing including a scanning-image optical system to focus the beam to scan a photo conductive photo receptor therewith as a light spot. The optical housing includes a collection member to collect particulate materials. The collection member includes a structure combining or overlapping plural sheet-shaped members, each including a highly-chargeable electrostatic absorption filter. Alternatively, the collection member includes an electrostatic absorption filter and a breathable sheet-shaped member covering almost all the surface of the electrostatic absorption filter.
