US Patent 7796151 Method and apparatus for printing with reflectivity

Aspects of the disclosure provide a method for improving performance of a raster output scanner (ROS) system with a reduced cost. The method can include identifying a current mirror facet of a motor polygon assembly (MPA) including multiple mirror facets that each mirror facet has a reflectivity characteristic, determining a driving signal based on the reflectivity characteristic of the current mirror facet and a performance characteristic of a light source, and driving the light source based on the driving signal to emit light that is reflected by the MPA onto a photoreceptor.