Abstract: An optical scanner including a scanner head, a roller engaged by a record, the roller including optically readable marks, light sources and sensor which illuminate and sense both roller and the record, a lens for focusing light from the record onto the sensor, and a lens mirror for focusing light from the roller onto the sensor.

Abstract: An optical scanner including a hand-holdable housing including a scanner head for scanning a record medium, a roller engageable with and rotatable by the record medium when scanned by the scanner head, the roller including an optically-sensible marking for use in measuring rotary movements of the roller, a light source illuminating the roller and the marking thereof, an optical sensor for sensing information on the record medium and the marking of the roller, and a control system for periodically energizing the light source during predetermined time periods enabling the optical sensor to sense the marking of the roller during the predetermined time periods, and the information on the record medium during other time periods.