Abstract
20 vol% titanium nitride ink was prepared, and printed directly by ink jet printing. The effect of the ink characteristics was studied on both printing and forming behaviors. An ink jet printer of the air jet system was employed which could eject high viscosity ink. In order to improve the stability of the ink, poly carboxyl ammonium (PCA) and microcrystalline cellulose (MC) were found to be the proper additives to the suspension. As a result, it was possible to prepare the ink with various characteristics by adding PCA and MC. The control of the ink characteristics was found to be the key concept in adjusting printing ejection and compact characteristics. As the apparent viscosity of the ink increases, the weight of printing ejection decreased, and the thickness of printed compact also thinned.
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