DEVELOPMENT OF A METHOD TO EVALUATE WRINKLING TENDENCY OF INK-JET PAPERS

by Mulaka, Brahmananda Reddy

This thesis presents the development of an apparatus and method to characterize the propensity of papers to form wrinkles in commercial ink-jet printing. An apparatus was developed to apply ink to the paper and then capture the dynamic features of wrinkle development using Shadow Moiré fringe technique and quantify the severity of wrinkling. The developed techniques enable the study of structural and manufacturing variables of the ink-jet papers that affect the severity of wrinkling. A parametric study was carried out to evaluate the influence of specimen dimensions, width of inked region, and tensile load on wrinkling severity. From the fringe images, a set of wrinkle parameters were determined. Finally, twelve different commercial ink-jet papers were studied using the test conditions determined from the parametric study. The proposed method provides a reasonable laboratory technique to evaluate wrinkle tendency of papers.