HARDENING METHOD FOR PRINTED LAYER

摘要

The present invention relates to a method for hardening a printed layer. According to an aspect of the present invention, disclosed is a method for hardening a printed layer, which includes: 1) a step of charging a target having the printed layer formed on a surface thereof by one among ink jet printing, laser printing and option printing to an irradiation area of a near-infrared ray heater; and 2) a step of irradiating the near-infrared ray for a fixed hardening time over the whole printed area of the target including a boundary part forming the outermost part of the printed layer.