Investigation of Ink-Substrate Adhesion in LEP Printing

摘要

Understanding of ink paper adhesion in LEP printing through interface investigation is presented. Relationship between macroscopic time dependent work of adhesion measurement, polar content of paper and ink surfaces, and interfacial acid-base interaction is revealed. Direct observation of the ink-paper interfacial interaction through ATR-FTIR measurement is described and C-O stretching band around 1152 cm~(-1) is shown to indicate acid-base interaction. Papers with high polar content exhibit strong intensity as well as reduction in the band location of the C-O stretch. Intensity ratio of C-O stretch around 1152 cm~(-1) and a neighboring C-C stretch at 1168 cm~(-1)is shown to have a linear relationship with the total work of adhesion immediately after printing.