Presentations: Electrophotography

Abstract – Instrumentation for Control and Evaluation of Color Print Quality (2006) 

This presentation discusses instrumented quality measurement techniques for EP color printing, based on fundamental measurement principles, international standards and print quality requirements.  

EP processes, components and sub-systems are explained. EP color print quality, a complex system issue, is discussed and the many contributing factors elucidated. PQ requirements are examined in detail. Also examined is the role of human perception in perceived print quality of such critical factors as color, gloss, distinctness of image and others. 

Print quality evaluation methodologies, both traditional (subjective) and advanced (objective), are contrasted. Diverse instrumented methodologies are discussed and compared. Various instrumented quality analysis systems are presented, as are applications of quantitative methods to specific factors such as line quality, line width, text quality, graininess and mottle, image noise, dot analysis, banding, background and other print quality elements. Features to look for in instrumented EP color print quality analysis systems are outlined. 

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