Multi-Level Imaging Using Single-Pass Imaging System Having Spatial Light Modulator and Anamorphic Projection Optics

摘要

An imaging system utilizes an anamorphic optical system to concentrate a two-dimensional modulated light field in a process direction such that a one-dimensional scan line image extending in a cross-process direction is generated on an imaging surface. The modulated light field is generated by directing homogeneous light onto light modulating elements arranged in a two-dimensional array. The array is configured using a scan line image data group made up of pixel image data portions. An associated group of the light modulating elements aligned in the process direction is configured by each pixel image data portion. When a pixel value is partially on (i.e., between fully on and fully off), the light modulating elements of the associated group are configured such that modulating elements located in the center of each group are activated, and elements located on the upper and lower ends of each group are deactivated.