An equation to describe the granularity of an electrophotographic imaging system has been developed to include the density variance attributed to the paper and toner surfaces. Granularity, G=(JA, D measurements from two conventional electrophotographic copiers were used to validate the relationship. The results show good agreement with the overall shape of the G versus density curve, however the values are not consistent with estimated toner particle size. Clustering of the toner particles is suggested as the cause of the high G values.
Library of Congress Subject Headings
Electrophotography--Data processing; Photomechanical processes; Image processing
Department, Program, or Center
School of Photographic Arts and Sciences (CIAS)
Riehl, Kenneth, "Development and experimental verification of a revised granularity equation in electrophotography" (1984). Thesis. Rochester Institute of Technology. Accessed from
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