Printing apparatus, program, storage medium, method, and ink

Abstract

A printing apparatus comprises an ink-jet head which discharges an ink toward a medium, a UV light source, a movement mechanism which moves the medium, and a controller. When the printing mode is selected, the controller controls the ink-jet head to discharge the ink toward the medium, and the controller controls the UV light source to radiate a small amount of the ultraviolet light to cure the ink. When the erasing mode is selected, the controller controls the UV light source to radiate a large amount of the ultraviolet light toward the medium to decolorize the ink. Accordingly, the medium, on which the printing has been once performed, can be reused quickly and reliably. Further, the printing can be performed on a variety of media.

What is claimed is: 
     
         1 . An ink comprising:
 a coloring component which is decolorizable by ultraviolet light; and   a curing component which is curable by the ultraviolet light,   wherein a light amount of the ultraviolet light required to cure the curing component is smaller than a light amount of the ultraviolet light required to decolorize the coloring component.