Date of Award


Degree Name

Bachelor of Science


Pulp and Paper Technology

First Advisor

Dr. Robert A. Diehm


The object of this experiment was to find the effect of various pressures upon the ink coverage and the visual appearance of the half-tone print. A specially designed plate with four evenly spaced elevations was used with a Vandercook proof press. Various grades of paper were used. Results showed: a variation in the range of ink coverage due to the grade of paper and the number of lines of the half-tone; within the area of good printing a small change in pressure caused a large change in ink coverage; the change in ink coverage varied from elevation to elevation; an excess of ink was used in this experiment; the optimum printing pressure might have fallen between elevations; and the nature and/or quality of the data gathered did not at this time lend itself to mathematical analysis.