Ink drying method and ink drying device

An ink drying device for drying ink applied to a substrate in which a moisture content is required to be approximately zero, comprising:

• a nano-sizing module which performs at least two stages of processing of giving an injection energy to overheated dry vapor acquired by drying saturated moisture vapor through applying heat for micronizing and clustering particles of the overheated dry vapor, and further micronizing the particles of the clustered overheated dry vapor to generate nano-size overheated dry vapor;
• a chamber to which the nano-size overheated dry vapor micronized and modified by going through the at least two stages of processing is supplied from the nano-sizing module in a supersaturated state to form an anoxic atmosphere for drying ink;
• and
• a nano-size overheated dry vapor supplying module which forcibly infuses the nano-size overheated dry vapor modified by going through the at least two stages of processing into molecular interfaces between molecules of the ink in the anoxic atmosphere to give the energy of the nano-size overheated dry vapor to molecular interfaces of the ink in order to evaporate moisture of the ink and to degrade or reduce an organic solvent existing in the ink interfaces, and infusing a part of the nano-size overheated dry vapor into an inside of the molecules of the ink by overpowering a surface tension of the molecules of the ink to give the energy of the nano-size overheated dry vapor to the molecules of the ink to cause evaporation of the moisture of the ink and degradation and reduction of the organic solvent existing inside the molecules of the ink, thereby drying the ink on the substrate whose moisture content is approximately zero.