2003 Volume 42 Issue 4 Pages 348-355
Emulsion aggregation toner (nick-named as EA Toner) has been developed for digital color copiers&printers.
Emulsion aggregation toner has been made by using the following process steps: pigment/wax dispersion preparation, emulsion polymerization, mixing, aggregation, and coalescence. The emulsion aggregation process with stepwise aggregation in particle formation provides a capsule structure and it also exhibits narrow particle size distribution. Shape-optimized toner particles are obtained by the coalescence condition.EA Toner process requires less energy than conventional toner manufacturing process because no pulverization and no classification are in principle required even in the smaller size region.
The encapsulated toner enables the same level of charge for each color as well as stable print quality under various conditions and realized high level compatibility between oil-less fusing, high resolution print quality and wider applicability for different kinds of paper by internal wax incorporation and shape optimization.
