Patent ID: 7995089

Claim:
A method of minimizing manufacturing errors in a motor polygon assembly via real time facet measurement and mapping, comprising: providing an imaging system with at least one of a laser beam or array of beams, a rotating polygon assembly and an automatic power control; configuring said rotating polygon assembly using a rotating polygon mirror and a polygon motor driver to generate a response that is utilized by said automatic power control to minimize motor polygon assembly output reflectivity through real time facet reflectivity measurement and mapping provided in conjunction with said automatic power control; configuring control marks on said rotating polygon assembly, wherein said control marks are read by a reader during rotation of said rotating polygon assembly, and wherein said control marks provide pixel clock information, intensity correction information, error correction information regarding individual facets of said polygon assembly, and motor speed control information; illuminating the motor polygon assembly using light from a laser beam; monitoring laser beam reflections from the motor polygon assembly using said automatic power control; monitoring said laser beams for errors during processing over scan periods outside of printing time frames using said automatic power control, wherein said errors detected by said automatic power control during period outside of printing time are recorded internal to a raster output scanner to minimize overall setup in image output manufacturing; analyzing a percentage of rise in a vertical axis of a response waveform graph of said raster output scanner; and analyzing reflection from said facets in a horizontal axis of said response waveform graph to complete said measurement and mapping by correcting said output reflectivity of said laser beams.