Image inaccuracy compensator for optical scanning system

摘要

The compensator includes a main clock signal generator (92) which supplies a pixel clock signal generator (94), providing a pixel clock signal in response to pixel control signals for the control of adjacent panel spacing in scanning line. Independently of the pixel clock generator, the main clock signal is received by a mirror clock signal generator (96), responding to mirror control signals for the control of a mirror rotation speed for forwarding of scanning beam in first direction. A memory stores fault compensation signals, indicating the compensation necessary for removing spacing deviations of rated values of adjacent pixels in scanning line. A control (98) generates the pixel and mirror control signals independence of fault compensation signals for adjusting pixel clock signal phase relation to that of mirror clock signal.