Papers by Keyword: Inkjet Ink

Abstract: People pay more and more attention to water-based printing inkjet ink which has no environmental pollution and fits environmental protection requirements. Inkjet printing technology could be applicable small batch and various variety products and satisfy the customer’s personalized requirements. Resin as one of the main compositions of printing inkjet ink has important effects on ink’s performance. To determine the effects of resin on the performance of water-based printing inkjet ink, adopting grinding method prepare the samples by changing resin and its proportion. By testing the samples’ particle size, viscosity, surface tension, pH value, the effects of resin on the water-based printing inkjet ink were analyzed. The results show that the type of resin and composite ratio has some effects on the performance of printing inkjet ink. When the resin was mixed in accordance with Resin B/Resin C=29/21, the performance of printing inkjet ink which was diluted with this resin was better.

Abstract: Edible ink-jet ink is environmental friendly and all of its materials reach the food sanitation standards, so it can be directly printed on the surface of food, medicine and packaging in the way of non-contact ink-jet printing. Due to the acid and alkaline of food surface are different, and the food may experience low or high temperatures and long time exposure in the preserved process, so the stability of the ink is of vital important. Edible ink-jet ink has been prepared through choosing reasonable materials. And then, the performances of the ink such as viscosity, surface tension and pH value have been tested. Finally, the best formula of ink has been determined by evaluating the influence of the ink performances to the ink-jet printing quality. We prepared ink sample based on the best formula and stored it in normal temperature environment which is closed to outside, and evaluated the stability of the ink performance through regularly checking its performance; we evaluated the stability of the ink color under different PH value through adding a little acid-base regulator in it; we also evaluated the stability of the ink color to temperature and light through putting the coating sample in the environment with alternate high and low temperature and in the environment with strong light. The result shows that the stability of the ink is fine, and it can be preserved a month at least without any food preservative. The pH value, temperature and light have no influence to the ink color. So it has a favorable color performance and can be printed on the surface of food.

Abstract: In order to evaluate the practical application effect of the self-made water-based coated paper inkjet ink and to study the influence factors, their printing performance and the influence of the printed material for printing performance is studied. The drying time of coated paper ink and ordinary water-based inkjet ink are measured and compared. Drying process of ink droplet is recorded by video contact angle tester. It is found that the drying rate of the coated paper ink is higher than the ordinary ink and the diffusion of the ordinary ink is severe. The coated paper ink and ordinary ink are printed, and it is found that the former can get better image detail and color reproduction for the picture of human’s face and inanimate object. The coated paper ink can also obtain a better reproduction of tone levels. Coated paper inkjet ink is printed on different coated papers, and the color densities are measured through red, green and blue color filter. The color strength and hue error are obtained to evaluate the color characteristics on different papers. It is concluded that the coated paper inkjet ink can obtain better color on the Henglian gloss coated paper, Sunbrite gloss coated paper and SPCO matt coated paper.