Austin Sung


A variety of methods have been devised for the measurement of the smoothness of paper. These are reviewed and summarized in this work. Of the available methods, two of the most widely used have been selected for study. The air-leak method exemplified by the Sheffield instrument, and the nip-spreading method of the IGT printability tester are specifically presented and performed. The data obtained in empirical experiments are statistically analyzed and plotted, so as to determine if there is a functional relationship between the responses of these two methods. A linear relationship between the two is shown to be an appropriate model. This paper also indicates the predictability of gravure printing quality on the basis of paper smoothness/roughness. The percentage of missing cells of the gravure prints are shown to be related to both forms of smoothness/roughness measurement. 78% of the gravure cell skipping data variation as printed by the IGT printability tester is attributable to smoothness/roughness measurement. The remaining amount of variation is associated with error or untested factors. Compressibility and oil absorbency of paper should be further studied and incorporated into similar studies. It is expected that the addition of these variables would improve laboratory prediction of gravure printability as defined by cell skipping.

Library of Congress Subject Headings

Paper--Printing properties--Testing--Evaluation

Publication Date


Document Type


Department, Program, or Center

School of Print Media (CIAS)


Daniels, Chester

Advisor/Committee Member

Tang, Chi

Advisor/Committee Member

Noga, Joesph


Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works. Physical copy available through RIT's The Wallace Library at: Z247.S88 1984


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