Quantifying Print Quality for Practice

To aid in the process of evaluating print quality, five print quality metrics and methods to measure them have been developed. The attributes of interest are: (1) Edge quality, Sharpness, Detail, Raggedness; (2) Scatter, Particles, Halo, Character ghosts; (3) Readability, broken characters (4) Readability, touching characters; (5) Inverse text. The print quality is measured from a test chart containing typical text in a range of sizes and multiple fonts. The test chart is scanned on a commercial desk top scanner. Quantitative values are returned without human input or human surveys, but relate to human perception of these quantities.