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Ink made from charcoal
Charcoal is equivalent to food additive "vegetable terminal coloring matter."The vegetable coloring matter is defined as "charcoal-based substances obtained by carbonizing plants". Since we are using
Metal nanoparticles stabilize the metal as it is nano size by attaching a dispersant to the nano-sized metal surface and disperse it in the solvent. (It is said that it is very difficult to stabilize the metal as it is nano-sized, since the substance becomes large and becomes unstable when the surface area with respect to the volume becomes larger and the aggregation is repeated until stabilizing the volume becomes large.) With this technology, metal nanoparticles became difficult to aggregate and precipitate, making it possible to apply to inkjet inks.
UV curing ink is instantly cured by UV irradiation. One pass can clearly print full color printing on non-penetrating materials which was difficult to print directly, and it can be expected to be used as a substitute for label stickers.