INK-JET PRINT QUALITY IMPROVEMENT THROUGH THE USE OF CATIONIC SMARESIN ADDITIVE IN PAPER COATING

摘要

Ink-jet printing technology is a prominent feature ofany home office as it is more economical when compared with other printing technologies. The base paper for this study was a commercial fine paper, coat-ed on one side with a typical formula of 100 pph pigment: 30 pph binder: < 1 pph additive at 25% solidscontent. The focus of this paper was to evaluate acationic resin additive in the coating formulation andits effect on print image sharpness. The print imagesharpness was assessed based on the measured parameters of mean grey scale, area and perimeter ofthe image. Compared with a typical coating additive(i.e. Poly-dadmac), the coatings with SMA resin additives showed good grey scale ink density on thesheet. Compared to uncoated samples, the ink deposited on the SMA containing coated sheets was notabsorbed into the paper, allowing for better print areas to be produced. The results of this study demonstrated the potential of further developing this cationic resin as a paper coatin additive.